100 Million BC
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| 100 Million BC | |
|---|---|
| File:100 Million BC.jpg | |
| Directed by | Griff Furst |
| Produced by | David Michael Latt David Rimawi Paul Bales |
| Written by | Paul Bales |
| Starring | Michael Gross Christopher Atkins Greg Evigan Stephen Blackehart Geoff Mead Dayne Smith |
| Music by | Ralph Rieckermann |
| Cinematography | Alexander Yellen |
| Edited by | Mark Atkins Nick Everhart |
| Distributed by | The Asylum |
Release date |
|
Running time | 85 minutes |
| Country | United States |
| Language | English |
| Budget | $82 million |
| Box office | $34.2 million |
Search 100 Million BC on Amazon.
100 Million BC is a 2008 American direct-to-video action film directed by Griff Furst and distributed by film studio The Asylum. It is based on the urban legend of the Philadelphia Experiment.
Plot
The film centers on a group of Navy SEALs, led by American Dr. Frank Reno (Michael Gross), who once worked on the Philadelphia Experiment. The film begins in 1998, when Reno has purportedly perfected time travel technology. The SEALs use it to travel backwards to the year 112,000,000 BC (despite the film's title) of the Early Cretaceous, in order to rescue a previous, 1949 expedition led by Reno’s brother Erik (Christopher Atkins).
Reno’s team arrives in Laurasia six years after the 1949 team arrived, to find only a few survivors. The SEAL team is ill-equipped for the dangers of this prehistoric period, and is decimated by a Tyrannosaurus rex and other prehistoric life.
Having accomplished their mission, remnants of the two teams merge into one and return to the present, but in the process the anomaly malfunctions, allowing the subadult, 39-foot-long (12 m), 12-foot-tall (3.7 m) Tyrannosaurus to travel to the present and wreak havoc in rural Los Angeles. Reno stays behind, ostensibly to close the portal, but instead transports himself to the year 1950 after being cornered by the dinosaur. Apparently he tried to leap through the portal as it closed, but was sent to 1950 instead of 1998.
In the present, survivors of the team run through the Suburbs of Los Angeles, barely evading the rampaging prehistoric beast. Meanwhile, in 1950, the wounded Dr. Reno arrives and meets up with the younger version of himself (Dustin Harnish). The old Reno teaches the young Dr. Reno how to correctly use the time-travel technology before dying. Young Dr. Reno assembles a strike team of soldiers and leads them through the portal to 1998, where they attempt to rescue the remainder of the original team from the rampaging dinosaur.
Young Reno then has to find a means of luring the creature back into the anomaly and returning it to its own time, before it takes the life of his brother once more. Finally the dinosaur is banished back to its time where the trip fuses it with a mountain, killing it. Frank opens a portal to 1950 for everyone to return home through. Frank and one of the rescued team members plan to start a relationship. Someone needs to stay behind to close the portal, Erik does, his lover Ruth staying with him. The two plan to catch up with the group’s old selves.
Cast
- Michael Gross - Dr. Frank Reno
- Christopher Atkins - Erik Reno
- Greg Evigan - LCDR Ellis Dorn
- Stephen Blackehart - Lt. Robert Peet
- Geoff Mead - CPO Lopes
- Wendy Carter - Betty
- Marie Westbrook - Ruth
- Dean Kreyling - Chief "Bud" Stark
- Phil Burke - Stubbs
- Nick McCallum - Burke
- Aaron Stigger - Manriquez
- Daniel Ponsky - Jones
- James Viera - Przyzicki
- Dustin Harnish - Young Frank Reno
- Prince Pheenix Wade - Myrick
See also
- Journey to the Center of the Earth - Another film by The Asylum also featuring contact between humans and dinosaurs, and also starring Greg Evigan.
- The Land That Time Forgot - Another Asylum film with dinosaurs and time-displacement, which also features Stephen Blackehart.
The Macmillan Illustrated Encyclopedia Of Dinosaurs And Prehistoric Animals (V2)
Suborder Theropoda | INFRAORDER COELUROSAURIA
| Taxon | Specimen | Age / Time | Hip Height | Length | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Family Coeluridae | ||||||||
| Coelurus fragilis | YPM 1991 (Holotype) | Late Jurassic (Kimmeridgian, ~155–152 Ma) | ~0.7 m | ~2.4 m | 13–20 kg | Marsh, 1879 | Wyoming, USA; Morrison Formation | Slender, lightweight predator with hollow tail vertebrae. Previously confused with Ornitholestes. |
| Moros intrepidus | NCSM 33392 (Holotype) | Late Cretaceous (Cenomanian, ~96 Ma) | ~1.2 m | ~2.5 m | 78 kg | Zanno et al., 2019 | Utah, USA; Cedar Mountain Formation | Earliest known North American Cretaceous tyrannosauroid; bridged a 70 Ma gap in the lineage. |
| Nanotyrannus lethaeus | CMNH 7541 (Holotype) / "Bloody Mary" | Late Cretaceous (Maastrichtian, ~66 Ma) | ~2.1 m | ~5.2 m | ~600–700 kg | Bakker, Williams & Currie, 1988 | Montana/Wyoming, USA; Hell Creek / Lance Formation | Heavily debated taxon; heavily supported by many paleontologists as a juvenile Tyrannosaurus rex. |
| Ornitholestes hermanni | AMNH 619 (Holotype) | Late Jurassic (Kimmeridgian, ~154 Ma) | ~0.8 m | ~2.0 m | ~12–15 kg | Osborn, 1903 | Wyoming, USA; Morrison Formation | Small, agile hunter originally thought to have a nasal horn; known for catching small forest prey. |
| Family Proceratosauridae | ||||||||
| Proceratosaurus bradleyi | NHMUK R4860 (Holotype) | Middle Jurassic (Bathonian, ~166 Ma) | ~0.6 m | ~3.0 m | ~40 kg | von Huene, 1926 | Gloucestershire, England; Great Oolite Group | One of the earliest known ancestral tyrannosauroids; bears a prominent sagittal cranial crest. |
| Yutyrannus huali | ZCDM V5000 (Holotype) | Early Cretaceous (Aptian, ~125 Ma) | ~2.8 m | ~9.0 m | ~1,400 kg | Xu et al., 2012 | Liaoning, China; Yixian Formation | The largest known dinosaur with direct fossil evidence of feathers (filamentous protofeathers). |
| Family Compsognathidae | ||||||||
| Compsognathus longipes | BSP AS I 563 (Holotype) | Late Jurassic (Tithonian, ~150 Ma) | ~0.25 m | ~0.6–1.0 m | ~0.5–3.5 kg | Wagner, 1859 | Germany / France; Solnhofen Limestone | Classic chicken-sized theropod. The French specimen ("C. corallestris") represents a larger adult form. |
| Sinosauropteryx lingyuanensis | NIGP 127586 (Holotype) | Early Cretaceous (Barremian, ~122 Ma) | ~0.3 m | ~1.0 m | ~0.5–1.0 kg | Ji & Ji, 1996 | Liaoning, China; Yixian Formation | First non-avian dinosaur discovered with preserved feathers; fossilized melanosomes revealed an orange striped tail. |
| Family Ornithomimidae | ||||||||
| Archaeornithomimus asiaticus | AMNH 21800 (Holotype) | Late Cretaceous (Turonian/Campanian, ~70 Ma) | ~1.1 m | ~3.3 m | ~45–50 kg | Russell, 1972 | Inner Mongolia, China; Iren Dabasu Formation | An early, primitive structural ornithomimid with robust foot elements. |
| Dromiceiomimus samueli | ROM 840 (Holotype) | Late Cretaceous (Campanian, ~73 Ma) | ~1.4 m | ~3.5 m | ~100–150 kg | Russell, 1972 | Alberta, Canada; Horseshoe Canyon Formation | Characterized by large orbits and extremely slender limbs. Often synonymized with Ornithomimus. |
| Gallimimus bullatus | ZPAL MgD-I/94 (Holotype) | Late Cretaceous (Maastrichtian, ~70 Ma) | ~2.0 m | ~6.0 m | ~440–490 kg | Osmólska, Roniewicz & Barsbold, 1972 | Gobi Desert, Mongolia; Nemegt Formation | The largest well-known ostrich-mimic dinosaur; featured a toothless keratinous beak. |
| Ornithomimus velox | YPM 542 (Holotype) | Late Cretaceous (Maastrichtian, ~66 Ma) | ~1.3 m | ~3.8 m | ~150–170 kg | Marsh, 1890 | Colorado, USA; Denver Formation | The type species of the family. Possessed a highly bird-like braincase and long running legs. |
| Struthiomimus altus | AMNH 5339 | Late Cretaceous (Campanian, ~75 Ma) | ~1.4 m | ~4.3 m | ~150 kg | Lambe, 1902 | Alberta, Canada / Wyoming, USA; Dinosaur Park / Lance Formation | Exceedingly common North American ornithomimid; featured tightly interlocking tail vertebrae for stability. |
| Family Deinocheiridae | ||||||||
| Deinocheirus mirificus | ZPAL MgD-I/6 (Holotype) / MPC-D 100/127 | Late Cretaceous (Maastrichtian, ~70 Ma) | ~5.5 m | ~15.0 m | ~6,400 kg | Osmólska & Roniewicz, 1970 | Gobi Desert, Mongolia; Nemegt Formation | Gigantic, hump-backed omnivorous ornithomimosaur with a duck-like bill and massive 2.4-meter arms. |
| Family Oviraptoridae | ||||||||
| Avimimus nemegtensis | PIN 3907/1 (Holotype) | Late Cretaceous (Maastrichtian, ~70 Ma) | ~0.7 m | ~1.5 m | ~15 kg | Kurzanov, 1981 | Gobi Desert, Mongolia; Nemegt Formation | Highly bird-like; had fused wrist and foot bones (tarsometatarsus). Distinct from other oviraptorosaurs. |
| Chirostenotes pergracilis | NMC 2367 (Holotype) | Late Cretaceous (Campanian, ~76 Ma) | ~1.0 m | ~2.5 m | ~40 kg | Gilmore, 1924 | Alberta, Canada; Dinosaur Park Formation | Slender caenagnathid with elongated, specialized fingers and a sharp, shear-like jaw profile. |
| Conchoraptor gracilis | GI 100/20 (Holotype) | Late Cretaceous (Campanian, ~70 Ma) | ~0.5 m | ~1.2 m | ~10 kg | Barsbold, 1986 | Gobi Desert, Mongolia; Barun Goyot Formation | Small oviraptorid lacking a cranial crest; jaw structure suggests it crushed hard food items like mollusks. |
| Elmisaurus rarus | ZPAL MgD-I/98 (Holotype) | Late Cretaceous (Maastrichtian, ~70 Ma) | ~0.8 m | ~1.8 m | ~25 kg | Barsbold, 1981 | Gobi Desert, Mongolia; Nemegt Formation | Co-existed with Avimimus; defined by unique fusion details along its metatarsal structure. |
| Oviraptor philoceratops | AMNH 6517 (Holotype) | Late Cretaceous (Campanian, ~75 Ma) | ~0.8 m | ~1.6 m | ~35–40 kg | Osborn, 1924 | Gobi Desert, Mongolia; Djadochta Formation | Famous "egg thief" later proven to be a caring parent brooding its own nest rather than raiding Protoceratops. |
| Protarchaeopteryx robusta | GMV 2123 (Holotype) | Early Cretaceous (Barremian, ~124 Ma) | ~0.4 m | ~1.0 m | ~2–4 kg | Ji & Ji, 1997 | Liaoning, China; Yixian Formation | A primitive, long-legged oviraptorosaur found with distinct fans of symmetrical feathers on its tail. |
| Family Saurornithoididae | ||||||||
| Saurornithoides mongoliensis | AMNH 6516 (Holotype) | Late Cretaceous (Campanian, ~75 Ma) | ~0.8 m | ~2.4 m | ~35–40 kg | Osborn, 1924 | Gobi Desert, Mongolia; Djadochta Formation | Close relative of Stenonychosaurus; possessed large eye sockets pointing forward to provide binocular vision. |
| Stenonychosaurus inequalis | NMC 8539 (Holotype) | Late Cretaceous (Campanian, ~76 Ma) | ~0.9 m | ~2.5 m | ~50 kg | Sternberg, 1932 | Alberta, Canada; Dinosaur Park Formation | Long classic basis for the "Troodon" wastebasket taxon. Noted for its massive brain-to-body size ratio. |
| Troodon formosus | ANSP 9259 (Holotype) | Late Cretaceous (Campanian, ~77 Ma) | N/A (Teeth Only) | ~2.4 m | ~50 kg | Leidy, 1856 | Montana, USA; Judith River Formation | Historically diagnostic but currently regarded as a nomen dubium because the holotype consists only of a single tooth. |
| Family Therizinosauridae | ||||||||
| Erlikosaurus andrewsi | GI 100/111 (Holotype) | Late Cretaceous (Cenomanian, ~92 Ma) | ~1.2 m | ~3.4 m | ~150–200 kg | Barsbold, 1980 | Gobi Desert, Mongolia; Bayan Shireh Formation | Crucial therizinosaur taxon because it preserves the only known complete, uncrushed skull for the family. |
| Segnosaurus galbinensis | GI 100/80 (Holotype) | Late Cretaceous (Cenomanian, ~92 Ma) | ~2.1 m | ~6.0 m | ~1,300 kg | Perle, 1979 | Gobi Desert, Mongolia; Bayan Shireh Formation | Large, massive-bodied browser with specialized downward-turning mandibles and wide, four-toed feet. |
| Therizinosaurus cheloniformis | PIN 551-483 (Holotype) | Late Cretaceous (Maastrichtian, ~70 Ma) | ~4.5 m | ~9.0–10.0 m | ~3,000–5,000 kg | Maleev, 1954 | Gobi Desert, Mongolia; Nemegt Formation | A bizarre, giant herbivore sporting the longest claws of any known animal—reaching up to 1 meter in length. |
Suborder Theropoda | INFRAORDER DEINONYCHOSAURIA
| Taxon | Specimen | Age / Time | Hip Height | Length | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Family Dromaeosauridae | ||||||||
| Atrociraptor marshalli | TMP 1995.110.1 (Holotype) | Late Cretaceous (Maastrichtian, ~68.5 Ma) | ~0.7 m | ~2.0 m | ~15 kg | Currie & Varricchio, 2004 | Alberta, Canada; Horseshoe Canyon Formation | Short, deep skull and strongly specialized, backward-curved teeth distinguishing it from Saurornitholestes. |
| Bambiraptor feinbergi | AMNH FARB 30556 (Holotype) | Late Cretaceous (Campanian, ~72 Ma) | ~0.4 m | ~0.9 m (Juvenile) | ~2 kg (Juvenile) | Burnham et al., 2000 | Montana, USA; Two Medicine Formation | Exceptionally complete juvenile skeleton; crucial evidence for bird-like features including an opposable outer finger. |
| Dakotaraptor steini | PBMNH P.10.113.T (Holotype) | Late Cretaceous (Maastrichtian, ~66 Ma) | ~1.8 m | ~5.5 m | ~250–350 kg | DePalma et al., 2015 | South Dakota, USA; Hell Creek Formation | Giant dromaeosaurid with explicit evidence of quill knobs for feathers on its ulna; its valid assignment has faced modern skeletal element debate. |
| Deinonychus antirrhopus | YPM 5205 (Holotype) | Early Cretaceous (Aptian/Albian, ~115–108 Ma) | ~1.0 m | ~3.4 m | ~73–100 kg | Ostrom, 1969 | Montana / Wyoming, USA; Cloverly Formation | Groundbreaking dinosaur that initiated the "Dinosaur Renaissance," proving dinosaurs were highly active, warm-blooded animals. |
| Dromaeosaurus albertensis | AMNH 5656 (Holotype) | Late Cretaceous (Campanian, ~76–75 Ma) | ~0.6 m | ~2.0 m | ~15 kg | Matthew & Brown, 1922 | Alberta, Canada; Dinosaur Park Formation | Type genus of the family; heavily built jaw and skull optimized for a massive crushing bite force rather than slicing. |
| Microraptor gui | IVPP V13352 (Holotype) | Early Cretaceous (Aptian, ~120 Ma) | ~0.15 m | ~0.8–1.0 m | ~1.0 kg | Xu et al., 2003 | Liaoning, China; Jiufotang Formation | Famous four-winged gliding theropod; fossil analysis reveals iridescent black feathers similar to a modern crow. |
| Pyroraptor olympius | MNHN BO001 (Holotype) | Late Cretaceous (Campanian/Maastrichtian, ~70 Ma) | ~0.6 m | ~1.6 m | ~30 kg | Allain & Taquet, 2000 | Provence, France; Argiles Rutilantes Formation | Known primarily from fragmentary but highly descriptive remains, including the signature curved pedal "sickle" claw. |
| Saurornitholestes sullivani | SMP VP-1270 (Holotype) | Late Cretaceous (Campanian, ~73 Ma) | ~0.6 m | ~1.8 m | ~10 kg | Sullivan, 2006 | New Mexico, USA; Kirtland Formation | Noted for an unusually large olfactory bulb region, giving it a highly refined sense of smell for tracking small prey. |
| Velociraptor osmolskae | IMM 2001-V-O-2 (Holotype) | Late Cretaceous (Campanian, ~75–71 Ma) | ~0.5 m | ~2.0 m | ~15 kg | Godefroit et al., 2008 | Inner Mongolia, China; Bayan Mandahu Formation | Distinct species characterized by its longer maxilla and distinct skull bones separating it from V. mongoliensis. |
| Basal Avialae | ||||||||
| Alexornis antecedens | LACM 33213 (Holotype) | Late Cretaceous (Campanian, ~73 Ma) | ~0.12 m | ~0.2 m | ~0.1 kg | Brodkorb, 1976 | Baja California, Mexico; El Gallo Formation | An early, rare North American enantiornithean ("opposite bird") filling an essential regional evolutionary gap. |
| Archaeopteryx albersdoerferi | SNSB ESG 81 (The 11th / Daiting Specimen) | Late Jurassic (Tithonian, ~150 Ma) | ~0.15 m | ~0.4–0.5 m | ~0.3–0.5 kg | Kundrát et al., 2018 | Bavaria, Germany; Mörnsheim Formation | Formally described using 3D synchrotron microtomography; more evolutionary advanced toward flight mechanics than older Archaeopteryx specimens. |
Suborder Theropoda | INFRAORDER CERATOSAURIA
| Taxon | Specimen | Age / Time | Hip Height | Length | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Family Podokesauridae | ||||||||
| Coelophysis bauri | AMNH 2722 (Lectotype) | Late Triassic (Norian/Rhaetian, ~208–201 Ma) | ~0.9 m | ~3.0 m | ~15–25 kg | Cope, 1889 | New Mexico, USA; Chinle Formation | Extremely common, gregarious basal neotheropod. Famous for the massive bonebed found at Ghost Ranch. |
| Procompsognathus triassicus | SMNS 12591 (Holotype) | Late Triassic (Norian, ~210 Ma) | ~0.3 m | ~1.0 m | ~1 kg | Fraas, 1913 | Baden-Württemberg, Germany; Löwenstein Formation | A very small, lightly built primitive theropod. Historically popularized in pop culture (Jurassic Park novels). |
| Segisaurus halli | UCMP 32101 (Holotype) | Early Jurassic (Pliensbachian, ~183 Ma) | ~0.5 m | ~1.5 m | ~4–7 kg | Camp, 1936 | Arizona, USA; Navajo Sandstone | A rare, small-bodied coelophysid unique for having solid bones rather than the usual hollow theropod structure. |
| Family Ceratosauridae | ||||||||
| Ceratosaurus nasicornis | USNM 4735 (Holotype) | Late Jurassic (Kimmeridgian/Tithonian, ~153–148 Ma) | ~1.8 m | ~5.3–6.0 m | ~450–700 kg | Marsh, 1884 | Colorado, USA; Morrison Formation | Characterized by a prominent nasal horn, blade-like brow ridges, and an unusual row of osteoderms down its back. |
| Family Abelisauridae | ||||||||
| Abelisaurus comahuensis | MPCA 11098 (Holotype) | Late Cretaceous (Campanian, ~80–75 Ma) | ~2.2 m | ~7.2 m | ~1,500–2,000 kg | Bonaparte & Novas, 1985 | Río Negro, Argentina; Anacleto Formation | Known only from a single large, incomplete skull that displays large openings (fenestrae) to reduce weight. |
| Carnotaurus sastrei | MACN-CH 894 (Holotype) | Late Cretaceous (Campanian/Maastrichtian, ~71–69 Ma) | ~2.6 m | ~7.8 m | ~1,350 kg | Bonaparte, 1985 | Chubut, Argentina; La Colonia Formation | The iconic "meat-eating bull" featuring thick brow horns, vestigial front limbs, and extensive fossilized skin impressions. |
| Dilophosaurus wetherilli | UCMP 37302 (Holotype) | Early Jurassic (Sinemurian/Pliensbachian, ~193 Ma) | ~1.6 m | ~6.0–7.0 m | ~400 kg | Welles, 1954 | Arizona, USA; Kayenta Formation | Note: Formally a Dilophosaurid. Bears a pair of high, thin, longitudinal cranial crests. Did not spit venom or possess a frill. |
| Liliensternus liliensterni | MB.R.2175 (Syntype) | Late Triassic (Norian, ~210 Ma) | ~1.5 m | ~5.1 m | ~130–200 kg | von Huene, 1934 | Thuringia, Germany; Trossingen Formation | Note: Basal Neotheropod. One of the largest and most complete Triassic theropods discovered in Europe. |
| Limusaurus inextricabilis | IVPP V 15923 (Holotype) | Late Jurassic (Oxfordian, ~161 Ma) | ~0.6 m | ~1.7 m | ~15 kg | Xu et al., 2009 | Xinjiang, China; Shishugou Formation | Note: Noasaurid. Herbivorous ceratosaur that completely lost its teeth and developed a beak as it transitioned into adulthood. |
| Majungasaurus crenatissimus | MNHN.F.MAJ 4 / FMNH PR 2100 | Late Cretaceous (Maastrichtian, ~70–66 Ma) | ~2.0 m | ~6.5 m | ~1,100–1,400 kg | Depéret, 1896 | Mahajanga, Madagascar; Maevarano Formation | Apex predator of Madagascar with a single dome-like horn on its skull. Direct fossil evidence confirms cannibalistic behavior. |
| Masiakasaurus knopfleri | FMNH PR 2108 (Holotype) | Late Cretaceous (Maastrichtian, ~70–66 Ma) | ~0.6 m | ~1.8–2.0 m | ~20 kg | Sampson, Carrano, & Forster, 2001 | Mahajanga, Madagascar; Maevarano Formation | Note: Noasaurid. Small predator with highly specialized, forward-projecting (procumbent) teeth used to snare fish or small prey. |
Suborder Theropoda | INFRAORDER CARNOSAURIA
| Taxon | Specimen | Age / Time | Hip Height | Length | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Family Megalosauridae | ||||||||
| Cryolophosaurus ellioti | FMNH PR1821 (Holotype) | Early Jurassic (Pliensbachian, ~194–188 Ma) | ~2.1 m | ~6.5 m | ~465 kg | Hammer & Hickerson, 1994 | Antarctica; Hanson Formation | Known as the "Elvisaurus" due to its unique forward-facing, pompadour-like cranial crest. |
| Eustreptospondylus oxoniensis | OUMNH J.13558 (Holotype) | Middle Jurassic (Callovian, ~163 Ma) | ~1.3 m | ~4.6 m (Subadult) | ~200–250 kg | Walker, 1964 | Oxfordshire, England; Oxford Clay Formation | One of the most complete European Middle Jurassic theropods; represents a beachcombing subadult. |
| Marshosaurus bicentesimus | UMNH VP 6341 (Holotype) | Late Jurassic (Kimmeridgian, ~155–152 Ma) | ~0.9 m | ~4.5 m | ~200 kg | Madsen, 1976 | Utah, USA; Morrison Formation | A medium-sized, relatively gracile megalosauroidean that lived alongside Allosaurus. |
| Metriacanthosaurus parkeri | OUMNH J.12144 (Holotype) | Late Jurassic (Oxfordian, ~160 Ma) | ~2.2 m | ~8.0 m | ~1,000 kg | Walker, 1964 | Dorset, England; Oxford Clay Formation | Note: Metriacanthosaurid. Named for its highly elevated neural spines, which likely supported a small ridge or sail. |
| Poekilopleuron bucklandii | MNHN (Holotype, mostly destroyed) | Middle Jurassic (Bathonian, ~167 Ma) | ~2.0 m | ~7.0 m | ~1,000 kg | Eudes-Deslongchamps, 1838 | Normandy, France; Calcaire de Caen | One of the earliest named dinosaurs; the original historic holotype was tragically destroyed in WWII. |
| Torvosaurus gurneyi | ML 1100 (Maxilla/referred material) | Late Jurassic (Tithonian, ~150 Ma) | ~3.0 m | ~10.0 m | ~4,000–5,000 kg | Hendrickx & Mateus, 2014 | Portugal; Lourinhã Formation | Huge megalosaurid representing one of the largest terrestrial apex predators ever discovered in Jurassic Europe. |
| Family Spinosauridae | ||||||||
| Baryonyx walkeri | NHMUK R9951 (Holotype) | Early Cretaceous (Barremian, ~125 Ma) | ~2.5 m | ~7.5–9.3 m | ~1,200–1,700 kg | Charig & Milner, 1986 | Surrey, England; Weald Clay Formation | Semi-aquatic specialist with an elongated, crocodile-like snout and a massive 31 cm hand claw. |
| Spinosaurus aegyptiacus | BSPG 1912 VIII 19 (Holotype, destroyed) / FSAC-KK 11888 | Late Cretaceous (Cenomanian, ~99–93.5 Ma) | ~3.0 m (Quadrupedal stance posture debated) | ~14.0 m | ~6,000–7,400 kg | Stromer, 1915 | Egypt / Morocco; Bahariya / Kem Kem Group | Highly aquatic giant with a 1.6-meter dorsal sail and a paddle-like tail tailored for active swimming. |
| Suchomimus tenerensis | MNHN GDF 500 (Holotype) | Early Cretaceous (Aptian, ~112 Ma) | ~3.0 m | ~9.5–11.0 m | ~3,000–5,200 kg | Sereno et al., 1998 | Niger; Elrhaz Formation | Features a low dorsal ridge over its hips and a long snout with more than 100 finely serrated teeth. |
| Family Carcharodontosauridae | ||||||||
| Acrocanthosaurus atokensis | OMNH 10146 / NCSM 14345 | Early Cretaceous (Aptian/Algian, ~113–110 Ma) | ~3.4 m | ~11.5 m | ~5,700–6,200 kg | Stovall & Langston, 1950 | Oklahoma/Texas, USA; Antlers Formation | Noted for its high neural spines forming a ridge along its spine. Left famous footprints in Glen Rose, Texas. |
| Carcharodontosaurus iguidensis | MNHN IGU 1–12 (Holotype) | Late Cretaceous (Cenomanian, ~95 Ma) | ~3.6 m | ~12.0–12.5 m | ~6,000 kg | Brusatte & Sereno, 2007 | Niger; Echkar Formation | Massive carcharodontosaurid distinguished from C. saharicus by unique maxilla and braincase traits. |
| Giganotosaurus carolinii | MUCPv-Ch1 (Holotype) | Late Cretaceous (Cenomanian, ~98–97 Ma) | ~3.8 m | ~12.2–12.5 m | ~6,500–8,500 kg | Coria & Salgado, 1995 | Neuquén, Argentina; Candeleros Formation | One of the longest and heaviest known terrestrial theropods, slightly exceeding T. rex in length. |
| Family Allosauridae | ||||||||
| Allosaurus europaeus | ML 415 (Holotype) | Late Jurassic (Tithonian, ~150 Ma) | ~3.3 m | ~7.0–12.0 m | ~1,000–5,500 kg | Mateus et al., 2006 | Portugal / New Mexico, USA; Lourinhã / Morrison Formation | Closely related to the North American A. fragilis, but distinct due to differences in its posterior skull anatomy. |
| Yangchuanosaurus zigongensis | ZGM V0020 (Holotype) | Middle Jurassic (Bathonian/Callovian, ~165 Ma) | ~2.5 m | ~8.0 m | ~1,300 kg | Gao, 1993 | Sichuan, China; Lower Shaximiao Formation | Note: Metriacanthosaurid. Large Asian carnosaur sporting an array of ridges and bony bumps along its snout. |
| Family Tyrannosauridae | ||||||||
| Albertosaurus sarcophagus | CMN 5600 (Holotype) | Late Cretaceous (Maastrichtian, ~70 Ma) | ~2.8 m | ~8.6–9.0 m | ~2,000–2,500 kg | Osborn, 1905 | Alberta, Canada; Horseshoe Canyon Formation | Sleek, fast albertosaurine; a famous mass bonebed suggests they actively hunted in cooperative packs. |
| Alioramus altai | IGM 100/1844 (Holotype) | Late Cretaceous (Maastrichtian, ~70 Ma) | ~1.6 m | ~5.0–6.0 m | ~700–800 kg | Brusatte et al., 2009 | Gobi Desert, Mongolia; Nemegt Formation | Long-snouted alioramin tyrannosaurid characterized by a row of five distinct bony bumps along its nasal bones. |
| Daspletosaurus horneri | MOR 590 (Holotype) | Late Cretaceous (Campanian, ~75.2 Ma) | ~2.8 m | ~9.0 m | ~2,500–3,000 kg | Carr et al., 2017 | Montana, USA; Two Medicine Formation | Tactile-faced apex predator; fossil texturing strongly suggests its snout was covered in flat, sensitive scales. |
| Dryptosaurus aquilunguis | ANSP 9995 (Holotype) | Late Cretaceous (Maastrichtian, ~67 Ma) | ~2.2 m | ~7.5 m | ~1,500 kg | Cope, 1866 | New Jersey, USA; Hornerstown Formation | Note: Basal Tyrannosauroid. Isolated "Appalachian" predator famous for its exceptionally large, eagle-like hand claws. |
| Gorgosaurus libratus | CMN 2120 (Holotype) | Late Cretaceous (Campanian, ~76.5–75 Ma) | ~2.8 m | ~8.0–9.0 m | ~2,400–2,800 kg | Lambe, 1914 | Alberta, Canada; Dinosaur Park Formation | Highly common Albertosaurine with long hind limbs optimized for high-speed pursuits of hadrosaurs. |
| Qianzhousaurus sinensis | GMV 2132 (Holotype) | Late Cretaceous (Maastrichtian, ~66 Ma) | ~2.4 m | ~8.5–9.0 m | ~750–1,000 kg | Lü et al., 2014 | Jiangxi, China; Nanxiong Formation | Affectionately nicknamed "Pinocchio rex" due to its remarkably long, slender skull and specialized snout mechanics. |
| Tarbosaurus bataar | PIN 551-1 (Holotype) | Late Cretaceous (Maastrichtian, ~70–66 Ma) | ~3.3 m | ~10.0–12.0 m | ~4,000–5,000 kg | Maleev, 1955 | Gobi Desert, Mongolia; Nemegt Formation | The Asian counterpart of T. rex; it possessed highly rigid skull mechanics and significantly smaller vestigial arms. |
| Tromerosaurus solumons | UALVP 52981 (Holotype) | Late Cretaceous (Campanian, ~77–76 Ma) | ~2.3 m | ~7.0–8.0 m | ~1,200–1,500 kg | Powers et al., 2026 | Alberta, Canada; Oldman / Dinosaur Park Formation | Described recently. It features a mosaic of Albertosaurine and Tyrannosaurine anatomy. Named for its unique solitary lacrimal horn ("lonely mountain"), referencing Smaug. |
| Tyrannosaurus rex | CM 9380 (Holotype) / FMNH PR2081 ("Sue") | Late Cretaceous (Maastrichtian, ~68–66 Ma) | ~3.7–5.0 m | ~12.3–15.0 m | ~8,400–9,500 kg | Osborn, 1905 | Western North America; Hell Creek / Lance Formation | Celebrated apex predator boasting the highest bone-crushing bite force (~35,000+ Newtons) of any known terrestrial animal. |
Suborder Sauropodomorpha | INFRAORDER PROSAUROPODA
| Taxon | Specimen | Age / Time | Hip Height | Length | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Family Herrerasauridae | ||||||||
| Herrerasaurus ischigualastensis | PVL 2566 / PVSJ 373 | Late Triassic (Carnian, ~231.4 Ma) | ~1.1 m | ~3.5–6.0 m | ~210–350 kg | Reig, 1963 | San Juan, Argentina; Ischigualasto Formation | One of the earliest true dinosaurs. Highly predatory with a flexible lower jaw and sharp, serrated teeth. |
| Staurikosaurus pricei | MCZ 1669 (Holotype) | Late Triassic (Carnian, ~233.2 Ma) | ~0.8 m | ~2.2 m | ~30 kg | Colbert, 1970 | Rio Grande do Sul, Brazil; Santa Maria Formation | A slender, fast-running primitive dinosaur with a highly specialized pelvis featuring only two sacral vertebrae. |
| Family Anchisauridae | ||||||||
| Anchisaurus polyzelus | YPM 1883 (Holotype) | Early Jurassic (Pliensbachian/Toarcian, ~190 Ma) | ~0.5 m | ~2.0 m | ~27 kg | Marsh, 1885 | Connecticut, USA; Portland Formation | A small, delicate sauropodomorph that could easily alternate between bipedal running and quadrupedal walking. |
| Efraasia minor | SMNS 11838 (Holotype) | Late Triassic (Norian, ~210 Ma) | ~0.6 m | ~2.5 m | ~20–35 kg | Galton, 1973 | Baden-Württemberg, Germany; Löwenstein Formation | Long misidentified as an early theropod or alternative prosauropod species before being recognized as a unique basal form. |
| Eoraptor lunensis | PVSJ 512 (Holotype) | Late Triassic (Carnian, ~231.4 Ma) | ~0.3 m | ~1.0 m | ~10 kg | Sereno et al., 1993 | San Juan, Argentina; Ischigualasto Formation | A tiny omnivore. Its highly generalized skeletal anatomy sits remarkably close to the common ancestor of all dinosaurs. |
| Thecodontosaurus antiquus | BRSMG collection (Syntypes) | Late Triassic (Rhaetian, ~205 Ma) | ~0.4 m | ~1.2–2.5 m | ~11 kg | Riley & Stutchbury, 1836 | Bristol, England; Magnesian Conglomerate | The fourth dinosaur ever named historically. Represented a small, bipedal island-dwelling herbivore. |
| Family Plateosauridae | ||||||||
| Massospondylus kaalae | BP/1/4934 (Holotype) | Early Jurassic (Hettangian, ~200 Ma) | ~1.3 m | ~4.0–6.0 m | ~1,000 kg | Barrett, 2009 | Free State, South Africa; Upper Elliot Formation | Famous for exceptionally well-preserved fossil nesting sites containing completely fossilized embryos. |
| Mussaurus patagonicus | PVL 4068 (Holotype) | Late Triassic (Norian, ~215 Ma) | ~0.15 m (Hatchling) / ~1.5 m (Adult) | ~0.2 m (Hatchling) / ~6.0 m (Adult) | ~1,000 kg (Adult) | Bonaparte & Vince, 1979 | Santa Cruz, Argentina; El Tranquilo Formation | Named "mouse lizard" because the first discovered specimens were tiny hatchlings that fit in the palm of a hand. |
| Plateosaurus gracilis | SMNS 52831 (Holotype) | Late Triassic (Norian, ~210 Ma) | ~1.5 m | ~4.5–5.0 m | ~600 kg | von Huene, 1905 | Baden-Württemberg, Germany; Trossingen Formation | Formerly known as Sellosaurus. A slightly smaller, geologically older relative of Plateosaurus trossingensis. |
| Family Melanorosauridae | ||||||||
| Melanorosaurus readi | SAM 3449 (Syntype) | Late Triassic (Norian, ~210 Ma) | ~2.2 m | ~8.0 m | ~1,300 kg | Haughton, 1924 | Eastern Cape, South Africa; Lower Elliot Formation | A massive, robust quadruped that serves as a structural stepping stone between prosauropods and true giant sauropods. |
| Riojasaurus incertus | PVL 3808 (Holotype) | Late Triassic (Norian, ~210 Ma) | ~2.1 m | ~6.6–10.0 m | ~800–1,500 kg | Bonaparte, 1969 | La Rioja, Argentina; Los Colorados Formation | A heavily built, obligate quadruped equipped with dense, heavy limb bones to support its substantial body mass. |
| Yunnanosaurus youngi | CXMVZA 185 (Holotype) | Middle Jurassic (Aalenian/Bajocian, ~170 Ma) | ~2.0 m | ~7.0 m | ~1,200 kg | Lu et al., 2007 | Yunnan, China; Zhangjiahe Formation | Notable for its highly advanced, self-sharpening teeth that closely mimic the specialized skull mechanics of true sauropods. |
Non-Paleontological Entries
| Taxon | Specimen | Age / Time | Hip Height | Length | Body Mass | Author (Taxon) | Location / Universe | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Smurfette smurfensis | N/A | Modern Era (1958–Present) | ~0.1 m (approx. 3 Smurfs high) | N/A | ~0.25 kg | Peyo (Pierre Culliford) | Smurf Village / Peyo Comics | Fictional character. Originally created from clay by Gargamel to cause jealousy, but transformed into a real Smurf by Papa Smurf. |
Suborder Sauropodomorpha | INFRAORDER SAUROPODA
| Taxon | Specimen | Age / Time | Hip Height | Length | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Family Cetiosauridae | ||||||||
| Barapasaurus tagorei | ISI R.50 (Holotype) | Early Jurassic (Toarcian, ~182 Ma) | ~2.8 m | ~12.0–14.0 m | ~7,000 kg | Jain et al., 1975 | Telangana, India; Kota Formation | One of the earliest known large, fully quadrupedal sauropods; primitive spoon-shaped teeth. |
| Cetiosaurus oxoniensis | OUMNH J.13617 | Middle Jurassic (Bathonian, ~167 Ma) | ~3.0 m | ~16.0 m | ~11,000 kg | Phillips, 1871 | Oxfordshire, England; Forest Marble Formation | Historically the first sauropod ever recognized. Sir Richard Owen originally misidentified it as a giant aquatic crocodile. |
| Family Brachiosauridae | ||||||||
| Brachiosaurus altithorax | FMNH P 25107 (Holotype) | Late Jurassic (Tithonian, ~150 Ma) | ~4.3–6.0 m | ~24.0 m | ~28,000–45,000 kg | Riggs, 1903 | Colorado, USA / Telangana, India; Morrison / Kota Formation | Characterized by a highly elevated torso and front legs longer than its hind legs, giving it a giraffe-like posture. |
| Sauroposeidon proteles | OMNH 53062 (Holotype) | Early Cretaceous (Albian, ~112 Ma) | ~6.0 m | ~28.0–32.0 m | ~40,000–50,000 kg | Wedel et al., 2000 | Oklahoma, USA; Antlers Formation | One of the tallest known dinosaurs; possessed highly elongated, pneumatic neck vertebrae up to 1.4 meters long. |
| Family Camarasauridae | ||||||||
| Camarasaurus supremus | AMNH 5760 (Cotype) | Late Jurassic (Tithonian, ~148 Ma) | ~5.5 m | ~20.0–22.0 m | ~15,000–40,000 kg | Cope, 1877 | Colorado, USA; Morrison Formation | Exceedingly common North American sauropod with a highly robust, box-like skull and deep jaws. |
| Euhelopus zdanskyi | PMU 233 (Holotype) | Early Cretaceous (Barremian/Aptian, ~125 Ma) | ~3.1 m | ~11.0–15.0 m | ~3,500–5,000 kg | Wiman, 1929 | Shandong, China; Mengyin Formation | Note: Euhelopodid. A unique Asian macronarian with primitive teeth but advanced, air-filled vertebrae. |
| Omeisaurus fuxiensis | ZMT 5001 (Holotype) | Middle Jurassic (Oxfordian, ~160 Ma) | ~3.2 m | ~14.0–15.0 m | ~4,000–5,000 kg | Dong, Zhou & Zhang, 1983 | Sichuan, China; Upper Shaximiao Formation | Note: Mamenchisaurid. Known for a remarkably long neck and an unusual bone club or spine setup on its tail tip. |
| Opisthocoelicaudia skarzynskii | ZPAL MgD-I/48 (Holotype) | Late Cretaceous (Maastrichtian, ~70 Ma) | ~2.5 m | ~11.4–13.0 m | ~8,500–10,000 kg | Borsuk-Białynicka, 1977 | Gobi Desert, Mongolia; Nemegt Formation | Note: Saltasaurid. Discovered completely lacking a neck/skull; limb architecture suggests it could rear back on its tail. |
| Family Diplodocidae | ||||||||
| Amargasaurus cazaui | MACN-N 15 (Holotype) | Early Cretaceous (Barremian, ~122 Ma) | ~1.9 m | ~9.0–10.0 m | ~2,600 kg | Salgado & Bonaparte, 1991 | Neuquén, Argentina; La Amarga Formation | Note: Dicraeosaurid. Famous for a double row of high, parallel spines along its neck, which may have formed a sail or defensive spikes. |
| Apatosaurus ajax | YPM 1860 (Holotype) | Late Jurassic (Kimmeridgian, ~152 Ma) | ~5.8 m | ~21.0–23.0 m | ~16,000–22,000 kg | Marsh, 1877 | Colorado, USA; Morrison Formation | A heavily-built diplodocid with highly robust neck vertebrae and a whip-like tail. Famously involved in the "Brontosaurus" naming dispute. |
| Dicraeosaurus sattleri | MB.R.2337 (Syntype) | Late Jurassic (Tithonian, ~150 Ma) | ~2.1 m | ~12.0 m | ~4,000–5,500 kg | Janensch, 1914 | Lindi, Tanzania; Tendaguru Formation | A relatively small, short-necked diplodocoidean featuring tall, Y-shaped spines over its hips and back. |
| Diplodocus hallorum | NMMNH P-3690 (Holotype) | Late Jurassic (Kimmeridgian, ~154 Ma) | ~5.0 m | ~29.0–33.0 m | ~13,000–15,000 kg | Gillette, 1991 | New Mexico, USA; Morrison Formation | Originally named Seismosaurus; a slender, incredibly long whip-tailed sauropod. |
| Mamenchisaurus sinocanadorum | IVPP V10603 (Holotype) | Late Jurassic (Oxfordian, ~160 Ma) | ~6.1 m | ~26.0–35.0 m | ~25,000–35,000 kg | Russell & Zheng, 1993 | Xinjiang, China; Shishugou Formation | Note: Mamenchisaurid. Held one of the longest necks in natural history, spanning roughly 15 meters and supported by 19 vertebrae. |
| Supersaurus vivianae | BYU 9025 (Holotype) | Late Jurassic (Kimmeridgian, ~153 Ma) | ~9.6 m | ~39.0–45.0 m | ~32,000–50,000 kg | Jensen, 1985 | Colorado, USA; Morrison Formation | Competes for the title of the longest dinosaur known from decent skeletal remains; often swallows up Dystylosaurus. |
| Family Titanosauridae | ||||||||
| Alamosaurus sanjuanensis | USNM 10445 (Holotype) / BIBE 45854 | Late Cretaceous (Maastrichtian, ~67–66 Ma) | ~4.5–5.0 m | ~26.0–30.0 m | ~35,000–60,000 kg | Gilmore, 1922 | New Mexico / Texas, USA; Ojo Alamo / Javelina Formation | The only known sauropod living in North America at the very end of the Cretaceous; rivaled South American giants in size. |
| Dreadnoughtus schrani | MPM-PV 1156 (Holotype) | Late Cretaceous (Campanian/Maastrichtian, ~77 Ma) | ~7.4 m | ~26.0 m | ~31,000–38,000 kg | Lacovara et al., 2014 | Santa Cruz, Argentina; Cerro Fortaleza Formation | Noted for its incredibly complete giant skeleton, which provided unmatched precision for estimating titanosaur weight. |
| Patagotitan mayorum | MPEF-PV 3400 (Holotype) | Late Cretaceous (Albian, ~101 Ma) | ~6.2 m | ~37.0 m | ~50,000–57,000 kg | Carballido et al., 2017 | Chubut, Argentina; Cerro Barcino Formation | One of the largest candidates for the heaviest land animal of all time, based on an extensive multi-individual bonebed. |
| Saltasaurus loricatus | PVL 3654-1 (Holotype) | Late Cretaceous (Campanian/Maastrichtian, ~70 Ma) | ~1.4 m | ~8.5 m | ~2,500–3,000 kg | Bonaparte & Powell, 1980 | Salta, Argentina; Lecho Formation | Groundbreaking titanosaur that proved sauropods could grow bony armor plates (osteoderms) embedded in their skin. |
Suborder Cerapoda | INFRAORDER ORNITHOPODA
| Taxon | Specimen | Age / Time | Hip Height | Length | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Family Fabrosauridae & Heterodontosauridae | ||||||||
| Abrictosaurus consors | UCL B54 (Holotype) | Early Jurassic (Hettangian/Sinemurian, ~199–196 Ma) | ~0.35 m | ~1.2 m | ~45 kg | Thulborn, 1974 | Lesotho; Upper Elliot Formation | Heterodontosaurid that lacked the prominent tusks seen in its close relatives; thought to represent a female or juvenile form. |
| Echinodon becklesii | NHMUK 48209 (Lectotype) | Early Cretaceous (Berremian, ~140 Ma) | ~0.2 m | ~0.6 m | ~0.5 kg | Owen, 1861 | Dorset, England; Purbeck Group | Note: Heterodontosaurid. One of the youngest and smallest known members of its family, retaining canine-like teeth. |
| Fabrosaurus australis | MNHN LES 9 (Holotype) | Early Jurassic (Hettangian/Sinemurian, ~199–196 Ma) | ~0.3 m | ~1.0 m | ~3 kg | Ginsburg, 1964 | Lesotho; Upper Elliot Formation | A poorly known, dubious genus based mostly on partial jaw fragments; often synonymized with Lesothosaurus. |
| Geranosaurus atavus | SAM 4671 (Holotype) | Early Jurassic (Hettangian/Sinemurian, ~199–196 Ma) | ~0.4 m | ~1.2 m | ~5 kg | Broom, 1911 | Cape Province, South Africa; Upper Elliot Formation | Note: Heterodontosaurid. Known from highly fragmentary jaw and limb elements; currently considered a nomen dubium. |
| Heterodontosaurus tucki | SAM-PK-K1332 (Holotype) | Early Jurassic (Hettangian/Sinemurian, ~199–196 Ma) | ~0.5 m | ~1.2–1.7 m | ~2–10 kg | Crompton & Charig, 1962 | Cape Province, South Africa; Upper Elliot Formation | Famous for possessing three distinct types of teeth, including sharp, prominent canine-like tusks at the front of its jaws. |
| Lesothosaurus diagnosticus | NHMUK RU B17 (Holotype) | Early Jurassic (Hettangian/Sinemurian, ~199–196 Ma) | ~0.4 m | ~2.0 m | ~2–4 kg | Galton, 1978 | Lesotho / South Africa; Upper Elliot Formation | Extremely complete basal ornithischian; modern studies suggest it went through seasonal estivation (hibernation). |
| Pisanosaurus mertii | PVL 2577 (Holotype) | Late Triassic (Carnian, ~231.4 Ma) | ~0.3 m | ~1.0 m | ~2–5 kg | Casamiquela, 1967 | San Juan, Argentina; Ischigualasto Formation | Historically classed as the oldest ornithischian; heavily debated as a non-dinosaurian silesaurid instead. |
| Family Hypsilophodontidae | ||||||||
| Callovosaurus leedsi | NHMUK R1967 (Holotype) | Middle Jurassic (Callovian, ~163 Ma) | ~0.8 m | ~2.5 m | ~25 kg | Galton, 1980 | Northamptonshire, England; Oxford Clay Formation | Note: Dryosaurid. One of the earliest known iguanodontians; known primarily from an isolated femoral shaft. |
| Dryosaurus elderae | CM 3392 (Holotype) | Late Jurassic (Kimmeridgian/Tithonian, ~150 Ma) | ~0.9 m | ~2.5–3.0 m | ~20–30 kg | Carpenter & Galton, 2018 | Utah / Wyoming, USA; Morrison Formation | A fast, long-legged runner with a horny beak and large eyes. Formerly lumped into D. altus. |
| Fulgurotherium australe | AM F9827 (Holotype) | Early Cretaceous (Albian, ~110 Ma) | ~0.4 m | ~1.0–1.5 m | ~6 kg | von Huene, 1932 | New South Wales, Australia; Griman Creek Formation | Named "Lightning Beast" because its fossil femora were discovered in opal mining fields. Highly fragmentary. |
| Hypsilophodon foxii | BMNH R197 (Holotype) | Early Cretaceous (Barremian, ~125 Ma) | ~0.6 m | ~1.8 m | ~20 kg | Huxley, 1869 | Isle of Wight, England; Wessex Formation | The quintessential small ornithopod. Historically misidentified as a tree-climber; it was a highly fleet-footed ground runner. |
| Loncosaurus argentinus | MACN-N 23 (Holotype) | Late Cretaceous (Santonian, ~85 Ma) | ~1.2 m | ~4.0 m | ~70 kg | Ameghino, 1898 | Santa Cruz, Argentina; Cardiel Formation | An elusive, historically named ornithopod based on a single femur and tooth fragment. Regarded as a nomen dubium. |
| Nanosaurus agilis | YPM 1913 (Holotype) | Late Jurassic (Kimmeridgian/Tithonian, ~152 Ma) | ~0.3 m | ~1.0 m | ~2–4 kg | Marsh, 1877 | Colorado, USA; Morrison Formation | A tiny, primitive ornithischian that now senior-synonymizes both Othnielia and Othnielosaurus. |
| Parksosaurus warreni | ROM 804 (Holotype) | Late Cretaceous (Maastrichtian, ~69.5 Ma) | ~1.0 m | ~2.5 m | ~45 kg | Sternberg, 1937 | Alberta, Canada; Horseshoe Canyon Formation | Note: Thescelosaurid. A late-surviving, conservative small biped that lacked the advanced dental features of duck-billed dinosaurs. |
| Tenontosaurus dossi | FWMSH 93B-1 (Holotype) | Early Cretaceous (Aptian/Albian, ~115 Ma) | ~1.8 m | ~6.5–7.0 m | ~1,000 kg | Winkler, Murry & Tomida, 1997 | Texas, USA; Twin Mountains Formation | Note: Basal Iguanodontian. Distinguished from T. tilletti by more primitive dentition. Characterized by an exceptionally long, stiff tail. |
| Thescelosaurus garbanii | LACM 33542 (Holotype) | Late Cretaceous (Maastrichtian, ~66 Ma) | ~1.2 m | ~4.0–4.5 m | ~200–300 kg | Morris, 1976 | Montana, USA; Hell Creek Formation | Heavily built burrowing candidate with an armor-like row of scutes along its ribs. Frequently reassigned to Bugenasaura. |
| Valdosaurus canaliculatus | NHMUK R185 (Holotype) | Early Cretaceous (Barremian, ~125 Ma) | ~0.4 m | ~1.3 m (Juvenile) | ~10 kg (Juvenile) | Galton, 1975 | Isle of Wight, England; Wessex Formation | Note: Dryosaurid. Found closely alongside Hypsilophodon, but possessed structurally different, elongated thigh bone patterns. |
| Zephyrosaurus schaffi | MCZ 4392 (Holotype) | Early Cretaceous (Aptian/Albian, ~113 Ma) | ~0.6 m | ~1.8 m | ~20 kg | Sues, 1980 | Montana, USA; Cloverly Formation | Note: Orodromine. A small burrower with a distinctly specialized skull structure modified for high stress chewing. |
Suborder Cerapoda | INFRAORDER ORNITHOPODA
| Taxon | Specimen | Age / Time | Hip Height | Length | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Family Iguanodontidae | ||||||||
| Camptosaurus dispar | YPM 1877 (Holotype) | Late Jurassic (Kimmeridgian/Tithonian, ~152 Ma) | ~1.4 m | ~5.0–6.0 m | ~500–800 kg | Marsh, 1879 | Wyoming, USA; Morrison Formation | Note: Camptosaurid. Heavily built, facultative quadruped; transitional form showing early stages of specialized duck-bill grinding jaws. |
| Hippodraco scutodens | UMNH VP 20208 (Holotype) | Early Cretaceous (Barremian, ~125 Ma) | ~1.5 m | ~4.5 m | ~400 kg | McDonald et al., 2010 | Utah, USA; Cedar Mountain Formation | A relatively small, geologically early styracosternan characterized by a long, low, narrow skull profile. |
| Iguanodon bernissartensis | IRSNB 1534 (Lectotype) | Early Cretaceous (Barremian/Aptian, ~125–120 Ma) | ~2.7 m | ~9.0–11.0 m | ~3,500–4,500 kg | Boulenger, 1881 | Bernissart, Belgium; Sainte-Barbe Clays | The iconic second dinosaur ever named. Famously known for its conical thumb spikes, historically mistaken for a horn. |
| Muttaburrasaurus langdoni | QM F6140 (Holotype) | Early Cretaceous (Albian, ~105 Ma) | ~2.4 m | ~7.0–8.0 m | ~2,500 kg | Bartholomai & Molnar, 1881 | Queensland, Australia; Mackunda Formation | Note: Rhabdodontomorph. Famous for an unusually large, hollow, inflated nasal bulb likely used for vocalizations or displays. |
| Ouranosaurus nigeriensis | MNHN GDF 300 (Holotype) | Early Cretaceous (Aptian, ~112 Ma) | ~2.5 m | ~7.0–8.3 m | ~2,200 kg | Taquet, 1976 | Agadez, Niger; Elrhaz Formation | Features a striking row of highly elongated neural spines over its back and hips, supporting either a sail or a fatty hump. |
| Probactrosaurus gobiensis | PIN 2232/1 (Holotype) | Late Cretaceous (Cenomanian, ~96 Ma) | ~1.8 m | ~5.5–6.0 m | ~1,200 kg | Rozhdestvensky, 1966 | Inner Mongolia, China; Iren Dabasu Formation | Note: Hadrosauroid. A critical evolutionary link bridging the structural gap between primitive iguanodonts and true hadrosaurids. |
| Family Hadrosauridae | ||||||||
| Brachylophosaurus canadensis | NMC 8893 (Holotype) / "Leonardo" | Late Cretaceous (Campanian, ~78 Ma) | ~2.4 m | ~9.0 m | ~3,000–4,000 kg | Sternberg, 1953 | Alberta, Canada; Dinosaur Park Formation | Known for a flat, paddle-like bone crest over its skull. The mummy "Leonardo" preserved fully fossilized muscles and stomach contents. |
| Corythosaurus casuarius | AMNH 5240 (Holotype) | Late Cretaceous (Campanian, ~76.5 Ma) | ~2.8 m | ~8.1–9.0 m | ~3,100–4,000 kg | Brown, 1914 | Alberta, Canada / Wyoming, USA; Dinosaur Park / Lance Formation | Equipped with a large, hollow, dinner-plate-shaped cranial crest reminiscent of a modern cassowary helmet. |
| Edmontosaurus regalis | NMC 2288 (Holotype) | Late Cretaceous (Maastrichtian, ~73 Ma) | ~3.5 m | ~12.0–13.0 m | ~4,000–9,000 kg | Lambe, 1917 | Alberta, Canada / Wyoming, USA; Horseshoe Canyon / Lance Formation | A massive, crestless "flat-headed" duck-bill. Exceedingly rich bonebeds indicate immense migrating herds. |
| Hypacrosaurus stebingeri | MOR 549 (Holotype) | Late Cretaceous (Campanian, ~75 Ma) | ~2.6 m | ~7.5–9.1 m | ~3,400 kg | Horner & Currie, 1994 | Montana, USA; Two Medicine Formation | Distinguished by a rounded, helmet-like crest and high spine ridges. Extensive fossil nests include preserved embryos. |
| Kritosaurus navajovius | AMNH 5799 (Holotype) | Late Cretaceous (Campanian, ~73 Ma) | ~2.6 m | ~9.0 m | ~3,500–4,000 kg | Brown, 1910 | New Mexico, USA; Kirtland Formation | A poorly known saurolophine possessing a distinct, hook-shaped nasal bump or "Roman nose" ridge. |
| Lambeosaurus magnicristatus | NMC 8705 (Holotype) | Late Cretaceous (Campanian, ~75 Ma) | ~2.8 m | ~9.1 m | ~3,500 kg | Sternberg, 1935 | Alberta, Canada; Dinosaur Park Formation | Showcases a unique, forward-pointing cranial crest that resembles a dual hatchet or boot profile. |
| Maiasaura peeblesorum | YPM-PU 22405 (Holotype) | Late Cretaceous (Campanian, ~76.7 Ma) | ~2.2 m | ~9.0 m | ~2,500–3,000 kg | Horner & Makela, 1979 | Montana, USA; Two Medicine Formation | Meaning "Good Mother Lizard," it provided the first definitive evidence that dinosaurs raised and cared for their young in communal nests. |
| Olorotitan arharensis | AEHM 2/845 (Holotype) | Late Cretaceous (Maastrichtian, ~67 Ma) | ~3.2 m | ~8.0–12.0 m | ~3,100–4,500 kg | Godefroit et al., 2003 | Amur Oblast, Russia; Udurchukan Formation | A highly unique Asian lambeosaurine sporting a massive, backward-pointing crest shaped like a fan or hatchet. |
| Parasaurolophus walkeri | ROM 768 (Holotype) | Late Cretaceous (Campanian, ~76.5–73 Ma) | ~2.8 m | ~9.5–10.0 m | ~2,500–3,500 kg | Parks, 1922 | Alberta, Canada; Dinosaur Park Formation | Renowned for its curved, 1.8-meter-long tubular crest. Computer acoustic models prove it served as a low-frequency resonating chamber. |
| Saurolophus osborni | AMNH 5220 (Holotype) | Late Cretaceous (Maastrichtian, ~70 Ma) | ~2.8 m | ~9.8 m | ~3,000–3,800 kg | Brown, 1912 | Alberta, Canada; Horseshoe Canyon Formation | Features a solid, spike-like cranial crest pointing up and backward. Closely related to the giant Asian S. angustirostris. |
| Shantungosaurus giganteus | IVPP V1780 (Holotype) | Late Cretaceous (Campanian, ~73 Ma) | ~5.0 m | ~15.0–16.6 m | ~13,000–16,000 kg | Hu, 1973 | Shandong, China; Wangshi Group | The largest known non-sauropod dinosaur in history, rivaling the largest sauropods in total body mass. |
| Tsintaosaurus spinorhinus | IVPP V725 (Holotype) | Late Cretaceous (Campanian, ~73 Ma) | ~2.9 m | ~8.3–10.0 m | ~3,000 kg | Young, 1958 | Shandong, China; Wangshi Group | Historically reconstructed with a vertical, unicorn-like horn; recent research reveals it was a wider, forward-flaring crest. |
Suborder Cerapoda | INFRAORDER CERATOPIA
| Taxon | Specimen | Age / Time | Hip Height | Length | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Family Pachycephalosauridae | ||||||||
| Dracorex hogwartsia | TCMI 2004.17.1 (Holotype) | Late Cretaceous (Maastrichtian, ~66 Ma) | ~0.7 m | ~3.0 m | ~45 kg | Bakker et al., 2006 | South Dakota, USA; Hell Creek Formation | Flat-headed form with prominent spikes; named in honor of Hogwarts. Now recognized as a juvenile Pachycephalosaurus. |
| Goyocephale lattimorei | GI 100/1501 (Holotype) | Late Cretaceous (Campanian, ~76 Ma) | ~0.35 m | ~1.8–2.0 m | ~10–18 kg | Perle et al., 1982 | Gobi Desert, Mongolia; Boro Khula Formation | A primitive, flat-headed pachycephalosaur that retained large, canine-like teeth in its upper jaw. |
| Homalocephale calathocercos | GI 100/1201 (Holotype) | Late Cretaceous (Campanian, ~70 Ma) | ~0.4 m | ~1.8 m | ~43 kg | Maryańska & Osmólska, 1974 | Gobi Desert, Mongolia; Nemegt Formation | Noted for its flat, heavily pitted skull roof and an unusually wide pelvis, which may have aided in live birth or flanking defense. |
| Micropachycephalosaurus hongtuyanensis | IVPP V.5542 (Holotype) | Late Cretaceous (Campanian, ~73 Ma) | ~0.3 m | ~1.0 m | ~1–2 kg | Dong, 1978 | Shandong, China; Wangshi Group | Holds one of the longest generic names of any dinosaur despite being one of the smallest pachycephalosaurs discovered. |
| Pachycephalosaurus wyomingensis | AMNH 1696 / USNM 12031 (Holotype) | Late Cretaceous (Maastrichtian, ~68–66 Ma) | ~1.5 m | ~4.5 m | ~450 kg | Brown & Schlaikjer, 1943 | Montana / Wyoming, USA; Hell Creek / Lance Formation | The largest known bone-headed dinosaur, sporting a solid bony dome up to 22 centimeters (9 inches) thick. |
| Prenocephale prenes | GI 100/501 (Holotype) | Late Cretaceous (Maastrichtian, ~70 Ma) | ~0.8 m | ~2.4 m | ~130 kg | Maryańska & Osmólska, 1974 | Gobi Desert, Mongolia; Nemegt Formation | Closely related to Pachycephalosaurus, but possessed a high, fully rounded dome fringed by small bony nodules. |
| Stegoceras validum | UA 2 (Holotype) | Late Cretaceous (Campanian, ~75 Ma) | ~0.6 m | ~2.0 m | ~10–40 kg | Lambe, 1902 | Alberta, Canada; Dinosaur Park Formation | One of the most completely known pachycephalosaurs; its dome structure reveals internal plumbing built to absorb impacts. |
| Stygimoloch spinifer | UCMP 119433 (Holotype) | Late Cretaceous (Maastrichtian, ~66 Ma) | ~1.0 m | ~3.0 m | ~80 kg | Galton & Sues, 1983 | Montana / Wyoming, USA; Hell Creek / Lance Formation | Characterized by a cluster of long, narrow spikes radiating from the back of the skull. Now classified as a subadult Pachycephalosaurus. |
| Wannanosaurus yansiensis | IVPP V.4447 (Holotype) | Late Cretaceous (Maastrichtian, ~70 Ma) | ~0.15 m | ~0.6 m (Juvenile) | ~0.5–1.0 kg | Hou, 1977 | Anhui, China; Xiaoyan Formation | A very primitive, flat-headed form known from a tiny, single partial skeleton representing a juvenile individual. |
| Family Psittacosauridae | ||||||||
| Psittacosaurus meileyingensis | IVPP V.7383 (Holotype) | Early Cretaceous (Aptian, ~120 Ma) | ~0.4 m | ~1.0–1.1 m | ~20 kg | Sereno et al., 1988 | Liaoning, China; Jiufotang Formation | Early, bipedal "parrot lizard" with deep cheek bones. Other species in this genus preserve long, quill-like bristles on the tail. |
Suborder Cerapoda | INFRAORDER CERATOPIA
| Taxon | Specimen | Age / Time | Hip Height | Length | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Family Protoceratopidae | ||||||||
| Auroraceratops rugosus | IG-CAGS-V-001 (Holotype) | Early Cretaceous (Aptian, ~115 Ma) | ~0.4 m | ~1.2 m | ~15 kg | You, Li, Ji, Lamanna, & Dodson, 2005 | Gansu, China; Xinminbao Group | Note: Basal Neoceratopsian. Lacked facial horns but possessed rough, rugose bony textures on its skull, hence its name. |
| Bagaceratops rozhdestvenskyi | ZPAL MgD-I/123 (Holotype) | Late Cretaceous (Campanian, ~72 Ma) | ~0.3 m | ~1.0 m | ~22 kg | Maryańska & Osmólska, 1975 | Gobi Desert, Mongolia; Barun Goyot Formation | Small protoceratopid featuring a small, localized bony horn core on its snout and a highly abbreviated frill. |
| Leptoceratops gracilis | NMC 8889 (Holotype) | Late Cretaceous (Maastrichtian, ~66 Ma) | ~0.8 m | ~2.0 m | ~100–150 kg | Brown, 1914 | Alberta, Canada; Scollard Formation | Note: Leptoceratopid. A late-surviving, primitive, quadrupedal or optionally bipedal form with no horns and deep jaws. |
| Microceratus gobiensis | IVPP collection (Syntypes) | Late Cretaceous (Turonian, ~90 Ma) | ~0.25 m | ~0.6 m | ~4–5 kg | Mateus, 2008 | Gobi Desert, Mongolia; Bayan Shireh Formation | Note: Basal Neoceratopsian. Originally named Microceratops (preoccupied by a wasp genus). A swift, bipedal early horned dinosaur. |
| Montanoceratops cerorhynchus | AMNH 5464 (Holotype) | Late Cretaceous (Maastrichtian, ~70 Ma) | ~0.9 m | ~2.5 m | ~170 kg | Sternberg, 1951 | Montana, USA; St. Mary River Formation | Note: Leptoceratopid. Retained primitive claws rather than hooves; historically misreconstructed with a deep nasal horn. |
| Protoceratops hellenikorhinus | IMM 96BMV/1 (Holotype) | Late Cretaceous (Campanian, ~75 Ma) | ~0.7 m | ~2.0–2.5 m | ~180 kg | Lambert et al., 2001 | Inner Mongolia, China; Bayan Mandahu Formation | Larger than P. andrewsi; characterized by a distinctive double crest on its snout and robust flaring cheek structures. |
| Family Ceratopsidae | ||||||||
| Centrosaurus apertus | AMNH 5239 (Holotype) | Late Cretaceous (Campanian, ~76 Ma) | ~1.8 m | ~5.5–6.0 m | ~2,300 kg | Lambe, 1904 | Alberta, Canada; Dinosaur Park Formation | Type genus of Centrosaurinae. Possessed a single massive, forward-curving nasal horn and hooked bony spikes on its frill. |
| Chasmosaurus belli | ROM 843 (Holotype) | Late Cretaceous (Campanian, ~76 Ma) | ~1.5 m | ~4.8 m | ~1,500–2,000 kg | Lambe, 1914 | Alberta, Canada; Dinosaur Park Formation | Famous for its immensely large, rectangular frill perforated by expansive fenestrae to minimize weight. |
| Lokiceratops rangiformis | EMK 0012 (Holotype) | Late Cretaceous (Campanian, ~78 Ma) | ~2.0 m | ~6.7 m | ~5,000 kg | Loewen et al., 2024 | Montana, USA; Judith River Formation | A massive centrosaurine missing a nasal horn but sporting giant, blade-like, asymmetric curved horns on its frill roof. |
| Nasutoceratops titusi | UMNH VP 16800 (Holotype) | Late Cretaceous (Campanian, ~75 Ma) | ~1.7 m | ~4.5–5.0 m | ~1,500 kg | Sampson et al., 2013 | Utah, USA; Kaiparowits Formation | Features an unusually short, deep snout combined with long, curved, forward-pointing brow horns resembling cattle. |
| Pachyrhinosaurus lakustai | TMP 1989.55.1 (Holotype) | Late Cretaceous (Campanian, ~73.5 Ma) | ~1.8 m | ~5.0–5.5 m | ~2,000–3,000 kg | Fiorillo & Tykoski, 2008 | Alberta, Canada / Montana, USA; Wapiti / Hell Creek Formation | Lacked conventional horns; instead grew a massive, rough bony battering boss across its nose and eyes. |
| Pentaceratops sternbergii | AMNH 6325 (Holotype) | Late Cretaceous (Campanian, ~74 Ma) | ~3.3 m | ~6.0 m | ~4,000–5,000 kg | Osborn, 1923 | New Mexico, USA; Kirtland Formation | Named "five-horned face" due to prominent jugal cheek spikes. Held one of the largest skulls of any land animal. |
| Sinoceratops zhuchengensis | ZCDM V0010 (Holotype) | Late Cretaceous (Campanian/Maastrichtian, ~73 Ma) | ~2.0 m | ~6.0 m | ~2,000–2,300 kg | Xu et al., 2010 | Shandong, China; Xingezhuang Formation | The first definitive ceratopsid discovered outside of North America; a centrosaurine with short, forward-hooked frill horns. |
| Styracosaurus ovatus | USNM 11869 (Holotype) | Late Cretaceous (Campanian, ~75 Ma) | ~1.7 m | ~5.0–5.5 m | ~2,000 kg | Gilmore, 1930 | Montana, USA; Two Medicine Formation | Reassigned by some to Rubeosaurus. Showcases a spectacular frill array with the inner pair of spikes converging inward. |
| Torosaurus latus | YPM 1830 (Holotype) | Late Cretaceous (Maastrichtian, ~68–66 Ma) | ~2.5 m | ~7.5–8.0 m | ~6,000 kg | Marsh, 1891 | Wyoming / Montana, USA; Lance / Hell Creek Formation | Possessed an incredibly elongated frill with circular openings. Highly debated as the fully mature adult stage of Triceratops. |
| Triceratops horridus | YPM 1820 (Holotype) | Late Cretaceous (Maastrichtian, ~68–66 Ma) | ~2.7–3.0 m | ~8.0–9.0 m | ~6,000–12,000 kg | Marsh, 1889 | Western North America; Hell Creek / Lance Formation | Celebrated three-horned giant with a completely solid, heavily ossified frill lacking open fenestrae. |
Suborder Thyreophora | INFRAORDER STEGOSAURIA
| Taxon | Specimen | Age / Time | Hip Height | Length | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Family Stegosauridae (& basal Stegosauria) | ||||||||
| Chungkingosaurus jiangbeiensis | CV 00206 (Holotype) | Late Jurassic (Oxfordian, ~160 Ma) | ~1.0 m | ~3.0–4.0 m | ~1,000 kg | Dong, Zhou & Zhang, 1983 | Sichuan, China; Upper Shaximiao Formation | One of the smallest stegosaurs. Known for having a highly vertical thagomizer arrangement with at least three pairs of spines. |
| Dacentrurus armatus | BMNH 46013 (Holotype) | Late Jurassic (Kimmeridgian, ~154–150 Ma) | ~2.3 m | ~7.0–8.0 m | ~3,000–5,000 kg | Lucas, 1902 | Wiltshire, England; Kimmeridge Clay Formation | A large, wide-bodied European stegosaur characterized by long spikes over its hips rather than plates. |
| Gigantspinosaurus sichuanensis | ZDM 0019 (Holotype) | Late Jurassic (Oxfordian, ~160 Ma) | ~1.3 m | ~4.2 m | ~700 kg | Ouyang, 1992 | Sichuan, China; Upper Shaximiao Formation | Famous for sporting a pair of immense, flat, backward-pointing parascapular spines growing out from its shoulders. |
| Huayangosaurus taibaii | IVPP V6728 (Holotype) | Middle Jurassic (Bathonian/Callovian, ~165 Ma) | ~1.2 m | ~4.3 m | ~500 kg | Dong, Tang & Zhou, 1982 | Sichuan, China; Lower Shaximiao Formation | Note: Huayangosauridae. A primitive sister taxon to all other stegosaurs, retaining teeth at the very front of its beak. |
| Kentrosaurus aethiopicus | MB.R.4800 (Lectotype) | Late Jurassic (Kimmeridgian, ~152 Ma) | ~1.5 m | ~4.5 m | ~700–1,100 kg | Hennig, 1915 | Lindi, Tanzania; Tendaguru Formation | Possessed a combination of small plates on its neck and long defensive spikes transitioning down its back, hips, and tail. |
| Stegosaurus stenops | USNM 4934 (Holotype) | Late Jurassic (Kimmeridgian/Tithonian, ~155–148 Ma) | ~2.8–3.5 m | ~6.5–9.5 m | ~3,500–5,300 kg | Marsh, 1887 | Colorado / Wyoming, USA; Morrison Formation | The iconic type genus. Features two rows of large, alternating vertical plates along its spine and four horizontal thagomizer spikes. |
| Tuojiangosaurus multispinus | CV 00209 (Holotype) | Late Jurassic (Oxfordian, ~160 Ma) | ~2.0 m | ~7.0 m | ~2,500–2,800 kg | Dong, Li, Zhou & Chang, 1977 | Sichuan, China; Upper Shaximiao Formation | The most completely known Chinese stegosaur, structurally similar to Stegosaurus but with narrower, spike-like plates. |
Suborder Thyreophora | INFRAORDER ANKYLOSAURIA
| Taxon | Specimen | Age / Time | Hip Height | Length | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Family Scelidosauridae | ||||||||
| Scelidosaurus harrisonii | BMNH R1111 (Lectotype) | Early Jurassic (Sinemurian, ~191 Ma) | ~0.9 m | ~3.8–4.0 m | ~270 kg | Owen, 1859 | Dorset, England; Charmouth Mudstone | One of the earliest complete dinosaurs discovered. An obligate quadruped covered in rows of small bony studs. |
| Family Nodosauridae | ||||||||
| Minmi paravertebra | QM F10329 (Holotype) | Early Cretaceous (Aptian, ~115 Ma) | ~0.6 m | ~2.5–3.0 m | ~300 kg | Molnar, 1980 | Queensland, Australia; Minmi Member | Note: Kunbarrasaurid. Named for horizontal bony plates along its vertebrae. Possessed an unusually small, primitive braincase. |
| Nodosaurus textilis | YPM 1815 (Holotype) | Late Cretaceous (Cenomanian, ~95 Ma) | ~1.0 m | ~4.0–6.0 m | ~3,500 kg | Marsh, 1889 | Wyoming, USA; Frontier Formation | Type genus of the family. Lacked a tail club; armored with narrow, rectangular plates interspersed with small nodes. |
| Polacanthus foxii | BMNH R1106 (Holotype) | Early Cretaceous (Barremian, ~125 Ma) | ~1.0 m | ~4.0–5.0 m | ~2,000 kg | Owen, 1865 | Isle of Wight, England; Wessex Formation | Note: Polacanthid. Distinct for a large, solid bony shield (sacral shield) over its hips and a double row of tall spikes on its neck. |
| Sauropelta edwardsorum | AMNH 3036 (Holotype) | Early Cretaceous (Aptian/Albian, ~108 Ma) | ~1.3 m | ~5.2 m | ~1,500 kg | Ostrom, 1970 | Montana / Wyoming, USA; Cloverly Formation | Celebrated for its exceptionally large, pointed spikes projecting laterally from its neck to deter predators like Deinonychus. |
| Scutellosaurus lawleri | MNA Pl.175 (Holotype) | Early Jurassic (Hettangian/Sinemurian, ~196 Ma) | ~0.3 m | ~1.2 m | ~3 kg | Colbert, 1981 | Arizona, USA; Kayenta Formation | Note: Basal Thyreophoran. Small, lightly built bipedal herbivore sporting hundreds of tiny, hollow armor scutes down its back. |
| Family Ankylosauridae | ||||||||
| Ankylosaurus magniventris | AMNH 5895 (Holotype) | Late Cretaceous (Maastrichtian, ~68–66 Ma) | ~3.7 m | ~6.2–11.0 m | ~4,800–8,000 kg | Brown, 1908 | Montana / Wyoming, USA; Hell Creek / Lance Formation | The giant type genus. Equipped with heavy cranial armor fused to the skull and a massive, active bone club on its tail tip. |
| Euoplocephalus tutus | CMN 210 (Holotype) | Late Cretaceous (Campanian, ~76 Ma) | ~1.2 m | ~5.0–5.5 m | ~2,000–2,500 kg | Lambe, 1902 | Alberta, Canada; Dinosaur Park Formation | One of the best-known ankylosaurids; featured heavily armored, shutter-like eyelids for ocular protection. |
| Pinacosaurus grangeri | AMNH 6523 (Holotype) | Late Cretaceous (Campanian, ~75 Ma) | ~0.9 m | ~5.0 m | ~1,500–1,900 kg | Gilmore, 1933 | Gobi Desert, Mongolia; Djadochta Formation | Notable for having extra breathing holes (accessory nostrils) in its snout. Famous mass graves include multiple juveniles. |
| Talarurus plicatospineus | PIN 557-91 (Holotype) | Late Cretaceous (Turonian, ~90 Ma) | ~1.0 m | ~4.0–5.0 m | ~2,000 kg | Maleev, 1952 | Gobi Desert, Mongolia; Bayan Shireh Formation | A relatively primitive Asian ankylosaurid with a somewhat narrow tail club and a highly rigid, boxy pelvis structure. |
SUBORDER "RHAMPHORHYNCHOIDEA" (Primitive Long-Tailed Pterosaurs)
| Taxon | Specimen | Age / Time | Hip Height | Length / Wingspan | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Family Dimorphodontidae | ||||||||
| Dimorphodon macronyx | NHMUK PV R 1034 (Holotype) | Early Jurassic (Sinemurian, ~195 Ma) | ~0.25 m | L: ~1.0 m
W: ~1.4 m |
~0.5–1.0 kg | Owen, 1859 | Dorset, England; Blue Lias Formation | Had a large, deep skull reminiscent of a modern puffin and two distinct types of teeth in its jaws. |
| Family Eudimorphodontidae | ||||||||
| Eudimorphodon ranzii | MCSNB 2888 (Holotype) | Late Triassic (Norian, ~210 Ma) | ~0.15 m | L: ~0.4 m
W: ~1.0 m |
~0.1–0.2 kg | Zambelli, 1973 | Lombardy, Italy; Zorzino Limestone | One of the oldest known flying reptiles; possessed complex, multi-cusped teeth optimized for snatching fish. |
| Family Rhamphorhynchidae | ||||||||
| Anurognathus ammoni | BSPG 1922-I-42 (Holotype) | Late Jurassic (Tithonian, ~150 Ma) | ~0.05 m | L: ~0.09 m
W: ~0.5 m |
~0.04 kg | Döderlein, 1923 | Bavaria, Germany; Solnhofen Limestone | Note: Anurognathid. A tiny insectivore with a short, wide frog-like mouth and a drastically reduced tail. |
| Rhamphorhynchus etchesi | MJML K1500 (Holotype) | Late Jurassic (Kimmeridgian, ~152 Ma) | ~0.12 m | L: ~0.4 m
W: ~0.8 m |
~0.3 kg | O'Sullivan & Martill, 2015 | Dorset, England; Kimmeridge Clay Formation | Distinctly small species characterized by unique teeth curvature and wing-bone structural differences. |
| Scaphognathus crassirostris | GPIB 130 (Holotype) | Late Jurassic (Kimmeridgian, ~152 Ma) | ~0.18 m | L: ~0.6 m
W: ~0.9 m |
~0.4 kg | Wagner, 1861 | Bavaria, Germany; Solnhofen Limestone | Known as the "tub-snout" due to its blunt skull profile. Crucial historical subject for early pterosaur brain scans. |
SUBORDER PTERODACTYLOIDEA (Advanced Short-Tailed Pterosaurs)
| Taxon | Specimen | Age / Time | Hip Height | Length / Wingspan | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Family Dsungaripteridae | ||||||||
| Dsungaripterus weii | IVPP V-2776 (Holotype) | Early Cretaceous (Aptian, ~120 Ma) | ~0.5 m | L: ~1.2 m
W: ~3.0–3.5 m |
~10–15 kg | Young, 1964 | Xinjiang, China; Tugulu Group | Sporting an upturned jaw tip and broad, flat crushing teeth at the back, likely used to break open shellfish. |
| Family Pterodaustriidae | ||||||||
| Pterodaustro guinazui | PVL 3860 (Holotype) | Early Cretaceous (Albian, ~105 Ma) | ~0.25 m | L: ~0.8 m
W: ~2.5 m |
~2–3 kg | Bonaparte, 1970 | San Luis, Argentina; Lagarcito Formation | Note: Ctenochasmatid. Spectacular filter-feeder using over 1,000 comb-like bristle teeth to strain plankton out of water. |
| Family Pterodactylidae | ||||||||
| Arthurdactylus conandoylei | SMNK PAL 1132 (Holotype) | Early Cretaceous (Aptian, ~115 Ma) | ~0.5 m | L: ~0.7 m
W: ~4.6 m |
~10 kg | Frey & Martill, 1994 | Ceará, Brazil; Crato Formation | Note: Ornithocheirid. Boasted immensely elongated wings but tiny hind legs; named in honor of Sir Arthur Conan Doyle. |
| Caiuajara dobruskii | CP.V 1449 (Holotype) | Late Cretaceous (Turonian, ~90 Ma) | ~0.4 m | L: ~0.6 m
W: ~2.3 m |
~4–6 kg | Manzig et al., 2014 | Paraná, Brazil; Goio-Erê Formation | Note: Tapejarid. Discovered in an immense bonebed representing hundreds of individuals; had a sail-like cranial crest. |
| Cearadactylus atrox | MN 7019-V (Holotype) | Early Cretaceous (Albian, ~110 Ma) | ~0.4 m | L: ~0.8 m
W: ~4.0–5.5 m |
~15 kg | Leonardi & Borgomanero, 1985 | Ceará, Brazil; Santana Formation | Note: Ctenochasmatoid. Had an interlocking "fish trap" row of elongated teeth at the very front of its expanded snout tips. |
| Ctenochasma elegans | BSPG 1875.XIV.501 | Late Jurassic (Tithonian, ~150 Ma) | ~0.15 m | L: ~0.3 m
W: ~0.7–1.2 m |
~0.1–0.4 kg | Wagner, 1861 | Bavaria, Germany; Solnhofen Limestone | Small, needle-toothed pterosaur that lined its narrow jaw margins to filter out microscopic wetland organisms. |
| Tapejara wellnhoferi | AMNH 24440 (Holotype) | Early Cretaceous (Aptian, ~112 Ma) | ~0.3 m | L: ~0.5 m
W: ~3.5 m |
~5 kg | Kellner, 1989 | Ceará, Brazil; Santana Formation | Note: Tapejarid. Instantly recognizable by a huge semi-circular bone ridge on its snout supporting a massive tissue sail. |
| Family Ornithocheiridae | ||||||||
| Ornithocheirus simus | CAMSM B54428 (Holotype) | Early Cretaceous (Albian, ~100 Ma) | ~0.6 m | L: ~1.2 m
W: ~4.5–6.0 m |
~20–30 kg | Seeley, 1869 | Cambridgeshire, England; Cambridge Greensand | Large oceanic soarer with a specialized convex bone crest at the very tip of its long snout. |
| Pteranodon sternbergi | FHSM VP-339 (Holotype) | Late Cretaceous (Coniacian, ~85 Ma) | ~0.6 m | L: ~1.8 m
W: ~6.0–7.2 m |
~20–35 kg | Brown, 1943 | Kansas, USA; Niobrara Chalk | Note: Pteranodontid. Often split into Geosternbergia. Males possessed a tall, upward-flaring vertical bone crest. |
| Quetzalcoatlus lawsoni | TMM 41961-1 (Holotype) | Late Cretaceous (Maastrichtian, ~66 Ma) | ~2.2 m | L: ~13.5 m
W: ~4.5–25.0 m |
~45–600,000 kg | Andres & Langston, 2021 | Texas, USA; Javelina Formation | Note: Azhdarchid. The newly named smaller companion to the colossal Q. northropi; built like an obligate terrestrial stalker. |
| Tropeognathus mesembrinus | BSPG 1987 I 46 (Holotype) | Early Cretaceous (Albian, ~110 Ma) | ~0.8 m | L: ~1.6 m
W: ~6.2–8.2 m |
~40–50 kg | Wellnhofer, 1987 | Ceará, Brazil; Santana Formation | Giant keel-crested ocean glider; holds one of the largest wingspan measurements among all toothed pterosaurs. |
Prehistoric Marine Reptiles & Ancient Fish
| Taxon | Specimen | Age / Time | Body Depth | Length | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Order Mesosauria | ||||||||
| Mesosaurus tenuidens | MNHN collection | Early Permian (Artinskian, ~280 Ma) | ~0.1 m | ~1.0 m | ~1–2 kg | Gervais, 1865 | South Africa & Brazil; Irati / Whitehill Formation | One of the earliest fully aquatic reptiles. Its identical distribution across southern continents provided critical early proof for continental drift. |
| Order Nothosauria | ||||||||
| Nothosaurus giganteus | SMNS 51600 | Middle Triassic (Ladinian, ~240 Ma) | ~0.6 m | ~4.0–5.5 m | ~150–300 kg | Münster, 1834 | Germany; Upper Muschelkalk | A seal-like ambush predator equipped with elongated, interlocking teeth designed to snare fish along Triassic coastlines. |
| Order Ichthyosauria | ||||||||
| Eurhinosaurus huenei | SMNS 15822 (Holotype) | Early Jurassic (Toarcian, ~180 Ma) | ~0.8 m | ~6.0 m | ~1,000 kg | Abel, 1909 | Baden-Württemberg, Germany; Posidonia Shale | Had a radically elongated upper jaw that was double the length of the lower jaw, which it likely used to slash or spear fish like a modern swordfish. |
| Ichthyosaurus conybeari | NHMUK 40326 (Holotype) | Early Jurassic (Sinemurian, ~195 Ma) | ~0.4 m | ~2.0–2.5 m | ~80–120 kg | Lydekker, 1888 | Dorset, England; Blue Lias Formation | A small, dolphin-shaped glider named in honor of William Conybeare, a pioneer of early marine reptile analysis. |
| Ophthalmosaurus icenicus | NHMUK R2133 (Holotype) | Late Jurassic (Oxfordian, ~160 Ma) | ~1.1 m | ~4.0–5.0 m | ~900–1,000 kg | Seeley, 1874 | Peterborough, England; Oxford Clay Formation | Distinguished by enormous, plate-like eyes optimized to harvest light in the deep ocean where it hunted squid. |
| Shonisaurus popularis | UNV 008 (Holotype) | Late Triassic (Norian, ~215 Ma) | ~3.5 m | ~13.5–15.0 m | ~20,000–30,000 kg | Camp, 1976 | Nevada, USA; Luning Formation | A massive ichthyosaur with a deep, whale-like torso. Its teeth were restricted to the very front tips of its jaws. |
| Order Plesiosauria | ||||||||
| Attenborosaurus conybeari | NHMUK collection (Cast) | Early Jurassic (Sinemurian, ~190 Ma) | ~0.7 m | ~5.0 m | ~400 kg | Bakker, 1993 | Dorset, England; Blue Lias Formation | A primitive, long-necked pliosaur named after David Attenborough. The original holotype skeleton was destroyed during a WWII bombing raid. |
| Cryptoclidus richardsoni | NHMUK R2423 (Holotype) | Late Jurassic (Callovian, ~164 Ma) | ~0.6 m | ~3.0–4.0 m | ~350 kg | Phillips, 1871 | Wiltshire, England; Oxford Clay Formation | Features a dense cluster of interlocking, needle-thin teeth that acted as a sieve to strain small shrimp and fish. |
| Dolichorhynchops herschelensis | RSM P2401.1 (Holotype) | Late Cretaceous (Campanian, ~72 Ma) | ~0.5 m | ~3.5–4.3 m | ~200 kg | Tamksaare, 2005 | Saskatchewan, Canada; Bearpaw Formation | A short-necked, long-snouted polycotylid pliosaur that possessed highly agile flippers for swift, high-speed underwater acceleration. |
| Elasmosaurus platyurus | ANSP 10081 (Holotype) | Late Cretaceous (Campanian, ~80 Ma) | ~1.2 m | ~10.3 m | ~2,000 kg | Cope, 1868 | Kansas, USA; Pierre Shale Formation | Renowned for its extreme neck, which contained 72 individual vertebrae. Edward Drinker Cope famously described it with the skull on the tail tip. |
| Kronosaurus queenslandicus | QM F1609 (Holotype) / MCZ 1285 | Early Cretaceous (Albian, ~110 Ma) | ~2.0 m | ~9.0–10.5 m | ~7,000–10,000 kg | Longman, 1924 | Queensland, Australia; Toolebuc Formation | A colossal short-necked pliosaur whose massive 2.2-meter skull housed large, rounded teeth adapted to crush turtles and smaller marine reptiles. |
| Liopleurodon ferox | BMNH R2684 (Lectotype) | Late Jurassic (Callovian, ~162 Ma) | ~1.4 m | ~5.0–7.0 m | ~1,500–3,000 kg | Sauvage, 1873 | Boulogne-sur-Mer, France; Oxford Clay | An apex pliosaur. Its nostrils were arranged to permit directional underwater smelling to track prey across open waters. |
| Plesiosaurus dolichodeirus | BMNH 2265 (Holotype) | Early Jurassic (Sinemurian, ~195 Ma) | ~0.5 m | ~3.0–3.5 m | ~200–300 kg | Conybeare, 1824 | Dorset, England; Blue Lias Formation | The historically crucial type genus discovered by Mary Anning, establishing the foundation of marine paleontology. |
| Trinacromerum kirki | USNM 11136 (Holotype) | Late Cretaceous (Turonian, ~90 Ma) | ~0.6 m | ~3.0 m | ~150 kg | Cragin, 1888 | Kansas, USA; Greenhorn Limestone | A seal-like polycotylid whose flippers allowed it to cruise at higher speeds than typical long-necked plesiosaurs. |
| Order Squamata | ||||||||
| Clidastes propython | YPM 1258 (Holotype) | Late Cretaceous (Campanian, ~82 Ma) | ~0.4 m | ~3.5–4.0 m | ~100 kg | Cope, 1868 | Alabama, USA; Mooreville Chalk | A small, agile, slender mosasaur that lived in shallow costal waters, preying on fish, birds, and ammonites. |
| Jormungandr walhallaensis | NDGS 10838 (Holotype) | Late Cretaceous (Campanian, ~80 Ma) | ~0.7 m | ~7.0 m | ~1,200 kg | Zietlow et al., 2023 | North Dakota, USA; Pierre Shale Formation | Described recently. It represents a transitional form sharing traits with both Clidastes and Mosasaurus. Named after the Norse world serpent. |
| Megalania priscus (Varanus priscus) | BMNH collection (Syntypes) | Pleistocene (~50,000 years ago) | ~0.9 m (Hip Height) | ~5.5–6.0 m | ~600–1,900 kg | Owen, 1859 | Queensland, Australia; Allingham Formation | Note: Terrestrial. The largest terrestrial lizard ever discovered; it was a giant monitor lizard that coexisted with early Indigenous Australians. |
| Mosasaurus beaugei | OCP collection | Late Cretaceous (Maastrichtian, ~66 Ma) | ~3.6 m | ~10.0–22.0 m | ~5,000–18,000 kg | Arambourg, 1952 | Khouribga, Morocco; Ouled Abdoun Basin | A robust, heavy-skulled apex mosasaur that ruled the late Cretaceous waters of northern Africa. |
| Tylosaurus bernardi | IRSNB 3672 (Holotype) | Late Cretaceous (Maastrichtian, ~66 Ma) | ~1.8 m | ~12.0–13.0 m | ~7,000–10,000 kg | Dollo, 1885 | Ciply, Belgium; Craie de Ciply | Formally known as Hainosaurus. A giant apex predator with an elongated, solid bone snout used to ram prey. |
| Prehistoric Fish | ||||||||
| Dunkleosteus amblyodoratus | CMNH 5740 (Holotype) | Late Devonian (Famennian, ~360 Ma) | ~4.4 m | ~12.5–14.0 m | ~1,000 kg | Carr & Hlavin, 2010 | Ohio, USA; Cleveland Shale | An armor-plated placoderm that lacked true teeth, instead using self-sharpening bony jaw plates to snap prey in half. |
| Otodus megalodon | Tooth specimens only | Miocene to Pliocene (~23–3.6 Ma) | ~4.8 m | ~15.0–18.0 m | ~48,000–60,000 kg | Agassiz, 1843 | Global Distribution; Yorktown / Bone Valley | The largest predatory shark in history, featuring tooth serrations modified to hunt and butcher whales. |
Non-Mammalian Synapsids & Early Mammals
| Taxon | Specimen | Age / Time | Hip Height | Length | Body Mass | Author (Taxon) | Location / Formation | Comments / Synonyms |
|---|---|---|---|---|---|---|---|---|
| Order "Pelycosauria" | ||||||||
| Dimetrodon grandis | AMNH 4034 (Holotype) | Early Permian (Artinskian/Kungurian, ~280–272 Ma) | ~0.9 m | ~3.2–3.5 m | ~250 kg | Romer & Price, 1940 | Texas, USA; Clear Fork Group | Apex predator of the Permian. Famous for its towering neural spine sail, which was heavily vascularized for thermoregulation. |
| Order Therapsida | ||||||||
| Alphadon halleyi | UCMP 53095 (Holotype) | Late Cretaceous (Maastrichtian, ~66 Ma) | ~0.08 m | ~0.3 m | ~0.2–0.3 kg | Simpson, 1927 | Montana, USA; Hell Creek Formation | Note: Boreosphenida. A small, opossum-like nocturnal metatherian mammal that survived the K-Pg asteroid extinction event. |
| Bulbasaurus phylloxyron | CGP K5005 (Holotype) | Late Permian (Lopingian, ~256 Ma) | ~0.15 m | ~0.4–0.5 m | ~2–4 kg | Christian & Kammerer, 2017 | Eastern Cape, South Africa; Balfour Formation | Note: Dicynodontia. The earliest and most primitive known member of the family Geikiidae. Named for its prominent, bulbous nasal bossing. |
| Lystrosaurus curvatus | BP/1/4096 (Holotype) | Late Permian to Early Triassic (~252–250 Ma) | ~0.4 m | ~0.9–1.2 m | ~90 kg | Owen, 1859 | Antarctica & South Africa; Fremouw / Balfour Formation | Note: Dicynodontia. A burrowing survivor that completely dominated the globe right after the devastating Permian mass extinction. |
🦖 Dinosaur Chart Tables (Saurischia: Theropoda & Sauropodomorpha)
Here is your comprehensive set of chart tables organized by the specific taxonomic hierarchy you provided.
1. Infraorder: Ceratosauria & Carnosauria (Theropods)
- Order: Saurischia | Suborder: Theropoda
| SPECIES | TIME | FAMILY | TALL | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Coelophysis bauri | Late Triassic | Podokesauridae | 1.25 m | 3 m | 20 kg | Carnivore | Ghost Ranch, NM, USA | Agility & packing | Garfield: "3 meters long and only 20 kilos? This guy desperately needs a pan of lasagna." |
| Procompsognathus triassicus | Late Triassic | Podokesauridae | 0.3 m | 1.2 m | 1 kg | Carnivore / Scavenger | Löwenstein Formation, Germany | Swarm hunting | Papa Smurf: "Careful Smurfs! This little 'Compy' looks cute but it travels in dangerous groups!" |
| Saltopus elginensis | Late Triassic | Podokesauridae | 0.2 m | 0.6 m | 1 kg | Carnivore | Lossiemouth, Scotland | High-speed leaping | Alvin Seville: "A Scottish jumping lizard? I bet I could out-leap him on stage!" |
| Cryolophosaurus ellioti | Early Jurassic | Dilophosauridae | 2.1 m | 6.5 m | 460 kg | Carnivore | Mt. Kirkpatrick, Antarctica | Sub-zero tolerance | Winnie the Pooh: "Oh d-d-dear, a dinosaur with a pompadour crest who likes the cold. I hope he doesn't eat honey." |
| Dilophosaurus wetherilli | Early Jurassic | Dilophosauridae | 2.5 m | 7 m | 400 kg | Carnivore | Kayenta Formation, Arizona, USA | Dual-crested sensory | Hefty Smurf: "No pop-culture acid spitting here, but those twin head crests look tough!" |
| Ceratosaurus nasicornis | Late Jurassic | Ceratosauridae | 2.5 m | 6 m | 600 kg | Carnivore | Morrison Formation, Utah, USA | Nasal horn combat | Optimus Prime: "A warrior sporting armor-plates along its spine and a horn upon its brow. Respectable." |
| Carnotaurus sastrei | Late Cretaceous | Abelisauridae | 3 m | 8 m | 1.5 tons | Carnivore | La Colonia Fm., Argentina | Extreme sprint speed | Tigger: "Look at those teeny-tiny arms! TTFN—Ta-Ta For Now, armless wonder!" |
| Majungasaurus crenatissimus | Late Cretaceous | Abelisauridae | 2 m | 7 m | 1.1 tons | Carnivore | Maevarano Fm., Madagascar | Cannibalistic bite | Brainy Smurf: "According to my books, this predator actually ate its own kind. Highly uncivilized!" |
| Elaphrosaurus bambergi | Late Jurassic | Noaosauridae | 1.5 m | 6.2 m | 210 kg | Omnivore | Tendaguru Beds, Tanzania | Light-footed pacing | Daffy Duck: "Hey, look at that slender build! Finally, a dinosaur that understands the art of being sleek!" |
| Eustreptospondylus oxoniensis | Middle Jurassic | Megalosauridae | 2 m | 4.6 m | 500 kg | Carnivore | Oxford Clay, England | Island swimming | Ripjaws: "An island crawler that can swim? Now we're talking my language!" |
| Megalosaurus bucklandii | Middle Jurassic | Megalosauridae | 3 m | 6 m | 700 kg | Carnivore | Taynton Limestone, England | Historical legacy | Bugs Bunny: "The very first dinosaur ever officially named, doc! A true old-timer." |
| Torvosaurus gurneyi | Late Jurassic | Megalosauridae | 3.2 m | 10 m | 4 tons | Carnivore | Lourinhã Fm., Portugal | Massive bone crush | Teodora: "This European giant is a total nightmare. Keep your ghosts away from it, Slimer!" |
| Baryonyx walkeri | Early Cretaceous | Spinosauridae | 2.5 m | 9 m | 1.2 tons | Piscivore | Weald Clay, Surrey, UK | 12-inch thumb claw | Baby Kermit: "Yesh! He uses that big claw to catch fish, kind of like a giant scaly bear!" |
| Spinosaurus aegyptiacus | Late Cretaceous | Spinosauridae | 5 m | 14 m | 7.4 tons | Piscivore / Carnivore | Bahariya Oasis, Egypt | Semi-aquatic propulsion | Slimer: "Sails! Swims! Big mouth full of fish! Can I eat his leftovers? Please?!" |
| Suchomimus tenerensis | Early Cretaceous | Spinosauridae | 3 m | 11 m | 3 tons | Piscivore | Elrhaz Formation, Niger | Croc-jaw precision | Face: "Brrr! Look at that long snout! It looks exactly like a giant crocodile!" |
2. Infraorder: Carnosauria (Tyrants & Giants)
- Order: Saurischia | Suborder: Theropoda
| SPECIES | TIME | FAMILY | TALL | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Albertosaurus sarcophagus | Late Cretaceous | Tyrannosauridae | 3 m | 9 m | 2.5 tons | Carnivore | Horseshoe Canyon, Canada | Pack stealth hunting | Sid: "A Canadian tyrant? I bet he's super polite right up until he bites your head off." |
| Alioramus altai | Late Cretaceous | Tyrannosauridae | 2 m | 6 m | 800 kg | Carnivore | Nemegt Formation, Mongolia | Long-snouted speed | Simon: "An evolutionary departure from standard tyrant bone-crushing, prioritizing speed and snout agility." |
| Daspletosaurus horneri | Late Cretaceous | Tyrannosauridae | 3 m | 9 m | 3 tons | Carnivore | Two Medicine Fm., Montana, USA | Tactile facial sensitivity | Kimiko: "So its face was as sensitive as a human hand? Intriguing anatomy for a killer." |
| Qianzhousaurus sinensis | Late Cretaceous | Tyrannosauridae | 2.5 m | 9 m | 800 kg | Carnivore | Nanxiong Fm., Ganzhou, China | Long-snout ambush | Tee Zeng: "They call him 'Pinocchio Rex'! But I don't think his nose grows when he lies." |
| Tarbosaurus bataar | Late Cretaceous | Tyrannosauridae | 3.5 m | 10 m | 4.5 tons | Carnivore | Nemegt Formation, Mongolia | Locking jaw mechanism | Michelangelo: "Whoa, dudes! It’s like the Asian cousin of the big T-Rex! Total party crasher!" |
| Tyrannosaurus rex | Late Cretaceous | Tyrannosauridae | 6 m | 15.5 m | 8.8 tons | Carnivore | Hell Creek, Montana, USA | Bone-crushing bite | Clumsy Smurf: "Golly! I-I think I just tripped right into the path of the King of the Dinosaurs!" |
| Allosaurus europaeus | Late Jurassic | Allosauridae | 4.5 m | 12.5 m | 6 ton | Carnivore | Lourinhã; Morrison Fm., Portugal; New Mexico | Hatchet-bite jaw strike | Dawn: "Sleek, dangerous, and very common in the Jurassic. Go, Piplup... wait, never mind, run!" |
| Yangchuanosaurus zigongensis | Late Jurassic | Allosauridae | 3.5 m | 8 m | 1.3 tons | Carnivore | Shaximiao Fm., Sichuan, China | High-crested displays | Theodore: "He's so big... please don't let him notice us hiding in this hollow log!" |
| Acrocanthosaurus atokensis | Early Cretaceous | Carcharodontosauridae | 4 m | 11.5 m | 6.2 tons | Carnivore | Antlers Fm., Oklahoma, USA | High-spined muscle ridge | Huey, Dewey, & Louie: "Look at that high ridge on his back! He's built like an apex-predator football player!" |
| Carcharodontosaurus iguidensis | Late Cretaceous | Carcharodontosauridae | 4 m | 12 m | 6 tons | Carnivore | Echkar Formation, Niger | Shark-like slicing teeth | Baby Miss Piggy: "Shark-toothed lizard?! Well, he better not mess with moi or he’ll get a karate chop!" |
| Giganotosaurus carolinii | Late Cretaceous | Carcharodontosauridae | 4.2 m | 12.5 m | 7 tons | Carnivore | Candeleros Fm., Argentina | Slicing blood loss attack | Helicopter Chorus: "🎶 Flying high away from the giant claws, safe up here from those terrible jaws! 🎶" |
3. Infraorder: Coelurosauria (Feathered & Unusual Theropods)
- Order: Saurischia | Suborder: Theropoda
| SPECIES | TIME | FAMILY | TALL | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Coelurus fragilis | Late Jurassic | Coeluridae | 0.7 m | 2.4 m | 20 kg | Carnivore / Insectivore | Morrison Formation, Wyoming, USA | Hollow-boned speed | Garfield: "Hollow bones make him fragile. My bones are padded with lasagna. I win." |
| Moros intrepidus | Late Cretaceous | Coeluridae | 1.2 m | 2.5 m | 78 kg | Carnivore | Cedar Mountain, Utah, USA | High-speed agility | Alvin: "A tiny, swift ancestor of the T-Rex? Reminds me of me when I get an extra sugar rush." |
| Nanotyrannus lethaeus | Late Cretaceous | Coeluridae | 2 m | 5 m | 500 kg | Carnivore | Hell Creek, Montana, USA | Pygmy-tyrant speed | Simon: "The debate continues on whether this is a distinct genus or merely a juvenile T. rex." |
| Proceratosaurus bradleyi | Middle Jurassic | Proceratosauridae | 1 m | 3 m | 40 kg | Carnivore | Forest Marble Fm., England | Nasal crest display | Brainy Smurf: "An early ancestor of the tyrannosauroids, easily distinguished by its prominent skull crest." |
| Yutyrannus huali | Early Cretaceous | Proceratosauridae | 3 m | 9 m | 1.4 tons | Carnivore | Yixian Formation, China | Complete shaggy plumage | Winnie the Pooh: "A very fluffy, very large tyrant. He looks like a big winter coat with teeth." |
| Compsognathus longipes | Late Jurassic | Compsognathidae | 0.3 m | 1 m | 3.5 kg | Carnivore | Solnhofen, Germany | Insect catching | Bugs Bunny: "Ain't he a cute little stinker? Just a chicken-sized meat-eater, folks!" |
| Sinosauropteryx lingyuanensis | Early Cretaceous | Compsognathidae | 0.5 m | 1.2 m | 1 kg | Carnivore / Insectivore | Yixian Formation, China | Ginger-ringed tail camouflage | Teodora: "The first dinosaur to have its true feather colors proven! Orange and white rings!" |
| Archaeornithomimus asiaticus | Late Cretaceous | Ornithomimidae | 1.8 m | 3.3 m | 50 kg | Omnivore | Iren Dabasu Fm., Inner Mongolia | Ostrich mimicry | Hefty Smurf: "This one looks like an overgrown bird without wings. Bet it can run like the wind!" |
| Dromiceiomimus samueli | Late Cretaceous | Ornithomimidae | 2 m | 3.5 m | 150 kg | Omnivore | Horseshoe Canyon, Canada | Large-eyed night vision | Kimiko: "Those massive eyes suggest it was an exceptional nocturnal or crepuscular hunter." |
| Gallimimus bullatus | Late Cretaceous | Ornithomimidae | 3 m | 6 m | 440 kg | Omnivore | Nemegt Formation, Mongolia | High-velocity flocking | Michelangelo: "They're flocking this way! Just like that movie, dudes! Move your shell!" |
| Ornithomimus velox | Late Cretaceous | Ornithomimidae | 2 m | 3.8 m | 170 kg | Omnivore | Denver Formation, Colorado, USA | Feathered wing-arm steering | Daffy Duck: "An imitation bird! Fraud! Plagiarist! I am the only feather-speed icon around here!" |
| Struthiomimus altus | Late Cretaceous | Ornithomimidae | 2 m | 4.3 m | 150 kg | Omnivore | Dinosaur Park Fm., Canada | Browse stripping claws | Tigger: "Striped tail? No, but he has long legs built for bouncing and springing!" |
| Deinocheirus mirificus | Late Cretaceous | Deinocheiridae | 6 m | 15 m | 6.4 tons | Omnivore / Herbivore | Nemegt Formation, Mongolia | Giant sail-backed digging | Slimer: "Look at those giant 8-foot arms! Think of how many plates of food he can carry!" |
| Oviraptor philoceratops | Late Cretaceous | Oviraptoridae | 1.5 m | 2 m | 40 kg | Omnivore | Djadochta Formation, Mongolia | Egg-brooding beak | Baby Gonzo: "He doesn't steal eggs, he protects them! He's an misunderstood poultry artist!" |
| Saurornithoides mongoliensis | Late Cretaceous | Saurornithoididae | 1.2 m | 3 m | 45 kg | Carnivore | Djadochta Formation, Mongolia | High-intellect stereoscopic vision | Tee Zeng: "A super smart predator. My shadow-cane would have a tough time tricking this guy." |
| Troodon formosus | Late Cretaceous | Saurornithoididae | 1 m | 2.4 m | 50 kg | Omnivore / Carnivore | Judith River Fm., Montana, USA | Apex nocturnal hunting | Dawn: "Brrr, those massive eyes and sharp teeth are creepy. Stay close to the campfire, guys." |
| Therizinosaurus cheloniformis | Late Cretaceous | Therizinosaurus | 5 m | 10 m | 5 tons | Herbivore | Nemegt Formation, Mongolia | 3-foot scythe claws | Optimus Prime: "Blades used not for malice, but to harvest vegetation. A gentle giant with formidable defenses." |
| Atrociraptor marshalli | Late Cretaceous | Dromaeosauridae | 1 m | 2 m | 15 kg | Carnivore | Horseshoe Canyon, Canada | Deep-jawed crushing bite | Face: "Look at that short, strong face! This raptor looks like a fierce bulldog!" |
| Bambiraptor feinbergi | Late Cretaceous | Dromaeosauridae | 0.3 m | 0.9 m | 2 kg | Carnivore | Two Medicine Fm., Montana, USA | Opposable grasp talons | Baby Kermit: "He's named after a deer, but he's a tiny feathered raptor. Yay for tiny guys!" |
| Deinonychus antirrhopus | Early Cretaceous | Dromaeosauridae | 1.5 m | 3.4 m | 100 kg | Carnivore | Cloverly Formation, Montana, USA | Counter-balancing tail switch | Papa Smurf: "Ah, the famous 'Terrible Claw'. The animal that changed how we view dinosaurs forever." |
| Dromaeosaurus albertensis | Late Cretaceous | Dromaeosauridae | 0.6 m | 2 m | 15 kg | Carnivore | Dinosaur Park Fm., Canada | Heavy-duty jaw power | Clumsy Smurf: "Whoops! Good thing his heavy jaws missed my hat!" |
| Pyroraptor olympius | Late Cretaceous | Dromaeosauridae | 0.6 m | 1.6 m | 30 kg | Carnivore | Grès à Reptiles Fm., France | Curved sickle-claw climbing | ALF: "A fire thief from France! Does he go well with a side of French fries? Just checking." |
| Saurornitholestes sullivani | Late Cretaceous | Dromaeosauridae | 0.8 m | 1.8 m | 10 kg | Carnivore | Kirtland Formation, New Mexico | Elite olfactory sense | Simon: "Fossil skull structures indicate an unusually advanced sense of smell for a dromaeosaurid." |
| Utahraptor ostrommaysorum | Early Cretaceous | Dromaeosauridae | 2 m | 7 m | 500 kg | Carnivore | Cedar Mountain, Utah, USA | Heavyweight kick slashing | Hefty Smurf: "Now that is a raptor! Built like a tank with 9-inch foot switchblades!" |
| Velociraptor osmolskae | Late Cretaceous | Dromaeosauridae | 0.5 m | 2 m | 15 kg | Carnivore | Bayan Mandahu Fm., Inner Mongolia | Pinning prey down | Bugs Bunny: "Sorry to burst your bubble, folks, but this real-life doc is only the size of a turkey." |
| Archaeopteryx albersdoerferi | Late Jurassic | Archaeopterygidae | 0.3 m | 0.5 m | 0.5 kg | Carnivore / Insectivore | Solnhofen, Germany | Powered avian flight flight | Daffy Duck: "The transitional link between dinosaur and bird! See? I come from royalty!" |
4. Suborder: Sauropodomorpha (Prosauropods & Early Sauropods)
- Order: Saurischia | Suborder: Sauropodomorpha
| SPECIES | TIME | FAMILY | TALL | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Herrerasaurus ischigualastensis | Late Triassic | Herrerasauridae | 1.5 m | 6 m | 350 kg | Carnivore | Ischigualasto Fm., Argentina | Sliding lower jaw grip | Garfield: "An early meat-eater from Argentina. Still glad he wasn't around to take my food." |
| Smurfette smurfensis | Fantasy Triassic | Herrerasauridae | 1.0 m | 3.5 m | 120 kg | Herbivore / Smurfberry | Smurf Village Digsite | Blue skin camouflage | Papa Smurf: "Bless my soul! A custom Peyo dinosaur species colored entirely in smurf-blue!" |
| Staurikosaurus pricei | Late Triassic | Herrerasauridae | 0.8 m | 2.2 m | 30 kg | Carnivore | Santa Maria Fm., Brazil | High-velocity sprint | Alvin: "Small, fast, and toothy. It’s like a lizard version of our rock band on tour!" |
| Anchisaurus polyzelus | Early Jurassic | Anchisauridae | 0.8 m | 2 m | 27 kg | Herbivore / Omnivore | Portland Fm., Connecticut, USA | Facultative bipedalism | Simon: "An early prosauropod capable of switching between two-legged and four-legged locomotion." |
| Efraasia minor | Late Triassic | Anchisauridae | 1.2 m | 6 m | 300 kg | Herbivore | Löwenstein Formation, Germany | Slender browse-reaching | Theodore: "He looks so peaceful just munching on ferns. I like this guy." |
| Thecodontosaurus antiquus | Late Triassic | Anchisauridae | 0.3 m | 1.2 m | 11 kg | Herbivore | Bristol, England | Spoon-shaped gripping teeth | Brainy Smurf: "Its name means 'socket-toothed lizard'. An essential textbook example of early herbivore evolution!" |
| Massospondylus kaalae | Early Jurassic | Plateosauridae | 1.8 m | 4 m | 135 kg | Herbivore | Upper Elliot Fm., South Africa | Gizzard-stone digestion | Winnie the Pooh: "He swallows little stones to help digest his tummy full of green plants." |
| Mussaurus patagonicus | Late Triassic | Plateosauridae | 1.5 m | 6 m | 1 ton | Herbivore | El Tranquilo Fm., Argentina | Ontogenetic growth shift | Baby Miss Piggy: "The babies fit inside a human hand, but the adults are huge! Unbelievable!" |
| Plateosaurus gracilis | Late Triassic | Plateosauridae | 3 m | 7 m | 1 ton | Herbivore | Trossingen Fm., Germany | High-reach bipedal feeding | Hefty Smurf: "This guy is built strong to pull down branches. A true powerhouse of the Triassic!" |
| Riojasaurus incertus | Late Triassic | Melanorosauridae | 3 m | 10 m | 3 tons | Herbivore | Los Colorados Fm., Argentina | Obligate quadrupedal lumber | Sid: "A massive early plant-eater who couldn't lift up onto two legs. I relate to that after a heavy nap." |
5. Infraorder: Sauropoda (The Long-Necked Giants)
- Order: Saurischia | Suborder: Sauropodomorpha
| SPECIES | TIME | FAMILY | TALL | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Barapasaurus tagorei | Early Jurassic | Cetiosauridae | 4 m | 14 m | 7 tons | Herbivore | Kota Formation, India | Early column-like limbs | Tee Zeng: "Its name means 'Big-legged lizard'. It looks like a walking temple column!" |
| Cetiosaurus oxoniensis | Middle Jurassic | Cetiosauridae | 4.5 m | 16 m | 11 tons | Herbivore | Rutland, England | Heavy bone density | Bugs Bunny: "The 'whale lizard', doc. Though it never swam a day in its life!" |
| Apatosaurus ajax | Late Jurassic | Diplodocidae | 7 m | 27 m | 22 tons | Herbivore | Morrison Formation, Colorado, USA | Supersonic tail whip | Michelangelo: "Cowabunga! That giant tail could snap faster than the speed of sound!" |
| Barosaurus lentus | Late Jurassic | Diplodocidae | 18 m | 37 m | 30 tons | Herbivore | Morrison Formation, South Dakota | Ultra-elongated neck reach | Kimiko: "Its neck was so long it probably required an incredibly powerful heart to pump blood to the brain." |
| Diplodocus hallorum | Late Jurassic | Diplodocidae | 6 m | 32 m | 25 tons | Herbivore | Morrison Formation, New Mexico | Extreme horizontal sweep | Daffy Duck: "Thirty-two meters long?! Think of the real estate value on a tail like that!" |
| Mamenchisaurus sinocanadorum | Late Jurassic | Diplodocidae | 17.6 m | 35 m | 60 tons | Herbivore | Shishugou Formation, China | World-record 50-foot neck | Optimus Prime: "A marvel of biological engineering. A neck that spans half the length of its entire body." |
| Supersaurus vivianae | Late Jurassic | Diplodocidae | 21.5 m | 39 m | 40 tons | Herbivore | Morrison Formation, Colorado, USA | Extreme body length | ALF: "That is a super-sized lizard. Think of how many cats it could accidentally step on!" |
| Amargasaurus cazaui | Early Cretaceous | Dicraeosauridae | 2.5 m | 10 m | 2.6 tons | Herbivore | La Amarga Fm., Argentina | Double-row neck spines | Teodora: "Those twin rows of spikes along its neck look like a fancy, punk-rock hairdo!" |
| Dicraeosaurus sattleri | Late Jurassic | Dicraeosauridae | 3 m | 12 m | 4 tons | Herbivore | Tendaguru Beds, Tanzania | Low-level specialized browsing | Clumsy Smurf: "Gosh, a long-neck that's actually short enough for me to talk to without a megaphone!" |
| Brachiosaurus altithorax | Late Jurassic | Brachiosauridae | 14.2 m | 24.5 m | 45 tons | Herbivore | Morrison; Kota Formation, Colorado, USA; India | High-canopy vertical feeding | Helicopter Chorus: "🎶 Browsing the treetops up in the sky, even our rotors can see eye-to-eye! 🎶" |
| Giraffatitan brancai | Late Jurassic | Brachiosauridae | 13 m | 22 m | 40 tons | Herbivore | Tendaguru Beds, Tanzania | Elevated giraffe posture | Winnie the Pooh: "He doesn't need to climb trees to get his lunch. He is already as tall as the tree." |
| Sauroposeidon proteles | Early Cretaceous | Brachiosauridae | 17 m | 34 m | 50 tons | Herbivore | Antlers Fm., Oklahoma, USA | Highest skyscraper neck | Face: "Wow! He can peer right into the windows of a six-story building!" |
| Camarasaurus supremus | Late Jurassic | Camarasauridae | 9 m | 21 m | 28 tons | Herbivore | Morrison Formation, Colorado, USA | Box-skulled powerful bite | Dawn: "That blunt, boxy head looks like it could eat tough branches other sauropods couldn't touch." |
| Euhelopus zdanskyi | Early Cretaceous | Camarasauridae | 4 m | 15 m | 4 tons | Herbivore | Mengyin Formation, China | Spatulate leaf-shearing teeth | Huey, Dewey, & Louie: "Look at those teeth! Perfect for acting like giant garden pruning shears!" |
| Opisthocoelicaudia skarzynskii | Late Cretaceous | Camarasauridae | 3.5 m | 11 m | 10 tons | Herbivore | Nemegt Formation, Mongolia | Tripodal tail bracing | Slimer: "He can stand up on his back legs by balancing on his strong tail! Ultimate reach!" |
| Alamosaurus sanjuanensis | Late Cretaceous | Titanosauridae | 10 m | 30 m | 60 tons | Herbivore | Ojo Alamo Fm., New Mexico, USA | Osteoderm back body armor | Tigger: "A giant long-neck with armor bumps on its back! Talk about a tough customer!" |
| Dreadnoughtus schrani | Late Cretaceous | Titanosauridae | 19 m | 26 m | 49 tons | Herbivore | Cerro Fortaleza Fm., Argentina | Complete skeleton integrity | Sid: "He was named 'Dreadnought' because he feared absolutely nothing. Must be nice!" |
| Patagotitan mayorum | Late Cretaceous | Titanosauridae | 12 m | 37 m | 70 tons | Herbivore | Cerro Barcino Fm., Argentina | Mass-weight record holder | Papa Smurf: "Astounding! One of the largest land animals to ever walk our planet." |
| Puertasaurus reuili | Late Cretaceous | Titanosauridae | 15 m | 30 m | 55 tons | Herbivore | Pari Aike Fm., Argentina | Massive chest cavity breadth | Garfield: "Now that is a wide chest. Finally, someone who understands my body shape." |
| Saltasaurus loricatus | Late Cretaceous | Titanosauridae | 3 m | 8.5 m | 2.5 tons | Herbivore | Lecho Formation, Argentina | Bony armored skin scutes | Baby Kermit: "He's a tiny long-neck covered in bumpy armor plates! Like a giant turtle without a shell!" |
🦖 Dinosaur Chart Tables (Ornithischia: Cerapoda & Thyreophora)
The Cartoon All-Stars take turns sharing their personal, comedic, and character-driven commentary on every dinosaur listed.
1. Infraorder: Ornithopoda (Early & Small Omnivores/Browsers)
- Order: Ornithischia | Suborder: Cerapoda
| SPECIES | TIME | FAMILY | TALL | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Echinodon becklesii | Early Cretaceous | Heterodontosauridae | 0.2 m | 0.6 m | 1 kg | Omnivore | Purbeck Group, England | Spine-like bristles | Hefty Smurf: "A tiny, spiky fellow. He looks like a pincushion that bites!" |
| Heterodontosaurus tucki | Early Jurassic | Heterodontosauridae | 0.5 m | 1.2 m | 3.4 kg | Omnivore | Elliot Formation, South Africa | Differentiated fangs | Garfield: "Fangs for a plant-eater? Now that’s a guy who wants to look tough at the dinner table." |
| Lesothosaurus diagnosticus | Early Jurassic | Fabrosauridae | 0.4 m | 2 m | 8 kg | Herbivore | Upper Elliot Fm., Lesotho | Agile sprint running | Alvin Seville: "Fast, skinny, and always on the move. I bet he could dodge a net as fast as me!" |
| Pisanosaurus mertii | Late Triassic | Fabrosauridae | 0.3 m | 1 m | 5 kg | Herbivore | Ischigualasto Fm., Argentina | Primitive jaw chewing | Simon: "One of the most foundational and earliest known ornithischians in the fossil record." |
| Scutellosaurus lawleri | Early Jurassic | Fabrosauridae | 0.5 m | 1.2 m | 3 kg | Herbivore | Kayenta Formation, Arizona, USA | Bony armor studs | Teodora: "A tiny lizard covered in miniature armor beads. Absolutely adorable fashion!" |
| Callovosaurus leedsi | Middle Jurassic | Hypsilophodontidae | 0.8 m | 2.5 m | 25 kg | Herbivore | Oxford Clay, England | Swift low browsing | Theodore: "He looks so gentle and fragile. I hope the big meat-eaters don't see him." |
| Dryosaurus elderae | Late Jurassic | Hypsilophodontidae | 1.5 m | 3 m | 100 kg | Herbivore | Morrison Formation, Utah, USA | High-velocity evasion | Winnie the Pooh: "A very fast friend who eats leaves. I don't think he would care for honey." |
| Hypsilophodon foxii | Early Cretaceous | Hypsilophodontidae | 0.6 m | 1.8 m | 20 kg | Herbivore | Wessex Formation, Isle of Wight | Sharp horny beak | Bugs Bunny: "They used to think this doc lived in trees! Turns out he's strictly a ground runner, folks." |
| Nanosaurus agilis | Late Jurassic | Hypsilophodontidae | 0.6 m | 2 m | 10 kg | Herbivore | Morrison Formation, Colorado, USA | Ultra-lightweight leaping | Baby Kermit: "He's super small and super springy! Boing, boing, boing!" |
| Orodromeus makelai | Late Cretaceous | Hypsilophodontidae | 0.7 m | 2.5 m | 20 kg | Herbivore | Two Medicine Fm., Montana, USA | Subterranean burrowing | Slimer: "He digs tunnels underground! I wonder if he ever finds buried snacks down there?" |
| Parksosaurus warreni | Late Cretaceous | Hypsilophodontidae | 1 m | 2.5 m | 45 kg | Herbivore | Horseshoe Canyon, Canada | Stiff balance tail | Tigger: "His tail stays completely stiff when he hops around! That's a neat bouncing trick!" |
| Thescelosaurus garbanii | Late Cretaceous | Hypsilophodontidae | 1.2 m | 3.5 m | 300 kg | Herbivore | Hell Creek, Montana, USA | Heavily built running | Daffy Duck: "A plant-eater living right under T-Rex's nose? Now that is a stressful lifestyle!" |
2. Infraorder: Ornithopoda (Iguanodonts & Hadrosaurs / "Duck-Billed" Dinosaurs)
- Order: Ornithischia | Suborder: Cerapoda
| SPECIES | TIME | FAMILY | TALL | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Camptosaurus dispar | Late Jurassic | Iguanodontidae | 2 m | 6 m | 800 kg | Herbivore | Morrison Formation, Wyoming, USA | Beaked plant slicing | Dawn: "He can walk on two legs or four! Talk about a versatile traveler." |
| Iguanodon bernissartensis | Early Cretaceous | Iguanodontidae | 4.2 m | 11.8 m | 4.5 tons | Herbivore | Bernissart, Belgium | Dagger-like thumb spikes | Optimus Prime: "A peaceful herbivore equipped with a built-in blade for defense. Excellent design." |
| Muttaburrasaurus langdoni | Early Cretaceous | Iguanodontidae | 2.5 m | 8 m | 2.8 tons | Herbivore | Mackunda Fm., Queensland, Australia | Inflatable nasal chamber | Michelangelo: "Whoa, this dude has a huge hollow nose! He could honk louder than a car horn!" |
| Ouranosaurus nigeriensis | Early Cretaceous | Iguanodontidae | 3 m | 7 m | 2.2 tons | Herbivore | Elrhaz Formation, Niger | Sail-backed ridge display | Ripjaws: "A huge fin on its back! It looks like a giant river-dwelling fish on legs!" |
| Tenontosaurus dossi | Early Cretaceous | Iguanodontidae | 2 m | 6.5 m | 1 ton | Herbivore | Twin Mountains Fm., Texas, USA | Ultra-long whip tail | Sid: "That tail is more than half its body length! Talk about carrying a lot of extra baggage." |
| Bactrosaurus johnsoni | Late Cretaceous | Hadrosauridae | 2 m | 6 m | 1.5 tons | Herbivore | Iren Dabasu Fm., Inner Mongolia | Club-like spinal ridges | Papa Smurf: "An early, primitive ancestor of the magnificent duck-billed family." |
| Corythosaurus casuarius | Late Cretaceous | Hadrosauridae | 4 m | 9 m | 3.8 tons | Herbivore | Dinosaur Park; Lance Fm., Canada; Wyoming, USA | Helmet-crest acoustics | Face: "Hooray! His head looks exactly like a giant round helmet!" |
| Edmontosaurus regalis | Late Cretaceous | Hadrosauridae | 4.5 m | 12 m | 4 tons | Herbivore | Horseshoe Canyon; Lance, Canada; Wyoming, USA | Massive flat-billed browse | Brainy Smurf: "Fossils show this massive duck-bill actually had a fleshy, rooster-like comb on its head!" |
| Hadrosaurus foulkii | Late Cretaceous | Hadrosauridae | 3.5 m | 8 m | 3 tons | Herbivore | Woodbury Formation, New Jersey, USA | Historic benchmark skull | Bugs Bunny: "The first dinosaur skeleton ever put on display in the whole wide world, folks!" |
| Hypacrosaurus stebingeri | Late Cretaceous | Hadrosauridae | 4 m | 9 m | 4 tons | Herbivore | Two Medicine Fm., Montana, USA | High-spined back crest | Baby Miss Piggy: "He has a fancy high ridge along his back. It makes him look very tall and dramatic!" |
| Kritosaurus navajovius | Late Cretaceous | Hadrosauridae | 3.5 m | 9 m | 3.5 tons | Herbivore | Kirtland Formation, New Mexico | Hook-nosed skull ridge | ALF: "Now that is a magnificent snout! We could be distant relatives from Melmac." |
| Lambeosaurus magnicristatus | Late Cretaceous | Hadrosauridae | 4 m | 9.5 m | 4 tons | Herbivore | Dinosaur Park Fm., Canada | Hatchet-shaped hollow crest | Huey, Dewey, & Louie: "His head crest looks like a big backward axe! That is crazy!" |
| Maiasaura peeblesorum | Late Cretaceous | Hadrosauridae | 3 m | 9 m | 3 tons | Herbivore | Two Medicine Fm., Montana, USA | Communal nesting care | Baby Gonzo: "The 'Good Mother Lizard'! She raised her babies in huge colonies, just like a big family!" |
| Olorotitan arharensis | Late Cretaceous | Hadrosauridae | 4.5 m | 12 m | 5 tons | Herbivore | Tsagayan Fm., Amur Region, Russia | Fan-shaped hatchet crest | Tee Zeng: "A giant from Russia with a fan on his head. He's ready for a performance!" |
| Parasaurolophus walkeri | Late Cretaceous | Hadrosauridae | 4 m | 10 m | 2.5 tons | Herbivore | Kaiparowits Fm., Utah, USA | 6-foot trombone tube crest | Helicopter Chorus: "🎶 Honking loud through the forest trees, making music on the evening breeze! 🎶" |
| Prosaurolophus maximus | Late Cretaceous | Hadrosauridae | 3.5 m | 9 m | 3 tons | Herbivore | Dinosaur Park Fm., Canada | Small solid crest bump | Clumsy Smurf: "Golly, his horn is small. He must not bump into as many things as I do." |
| Saurolophus osborni | Late Cretaceous | Hadrosauridae | 4 m | 9.8 m | 3 tons | Herbivore | Horseshoe Canyon, Canada | Spike-like backward crest | Alvin: "A built-in megaphone spike on the back of his head! Let's start a rock band!" |
| Shantungosaurus giganteus | Late Cretaceous | Hadrosauridae | 7 m | 18.8 m | 16 tons | Herbivore | Wangshi Group, Shandong, China | Colossal body scaling | Garfield: "The biggest non-sauropod dinosaur ever. Think of how much salad this guy cleared out." |
| Tsintaosaurus spinorhinus | Late Cretaceous | Hadrosauridae | 3.5 m | 10 m | 3 tons | Herbivore | Wangshi Group, Shandong, China | Forward-pointing horn | Daffy Duck: "A unicorn dinosaur! Outrageous! He's stealing my spotlight with that headpiece!" |
3. Infraorder: Ceratopia (Pachycephalosaurs / "Bone-Headed" Dinosaurs)
- Order: Ornithischia | Suborder: Cerapoda
| SPECIES | TIME | FAMILY | TALL | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Dracorex hogwartsia | Late Cretaceous | Pachycephalosauridae | 1.3 m | 3 m | 180 kg | Herbivore | Hell Creek, South Dakota, USA | Dragon-like skull spikes | Teodora: "Named after Hogwarts! It looks exactly like a fairy-tale dragon, but without wings." |
| Homalocephale calathocercos | Late Cretaceous | Pachycephalosauridae | 0.6 m | 1.8 m | 43 kg | Herbivore | Nemegt Formation, Mongolia | Flat-topped dense skull | Simon: "Unlike its dome-headed relatives, this genus retained a completely flat skull roof." |
| Pachycephalosaurus wyomingensis | Late Cretaceous | Pachycephalosauridae | 2 m | 4.5 m | 450 kg | Herbivore | Hell Creek, Montana, USA | 10-inch thick solid bone dome | Hefty Smurf: "This guy is the ultimate headbutter! Ten inches of solid bone on his noggin!" |
| Prenocephale prenes | Late Cretaceous | Pachycephalosauridae | 1 m | 2.4 m | 130 kg | Herbivore | Nemegt Formation, Mongolia | Fully rounded bone dome | Brainy Smurf: "Its name means 'sloping head'. A magnificent specimen of Late Cretaceous fauna." |
| Stegoceras validum | Late Cretaceous | Pachycephalosauridae | 0.7 m | 2 m | 40 kg | Herbivore | Dinosaur Park Fm., Canada | Domed skull display | Theodore: "He's about my size, but I wouldn't want to get in a bumping match with him!" |
| Stygimoloch spinifer | Late Cretaceous | Pachycephalosauridae | 1.5 m | 3 m | 200 kg | Herbivore | Hell Creek, Montana, USA | Long rear head spikes | Michelangelo: "Whoa, dudes! It looks like a heavy-metal dinosaur with all those crazy horns on the back!" |
4. Infraorder: Ceratopia (Psittacosaurids & Horned / Frilled Dinosaurs)
- Order: Ornithischia | Suborder: Cerapoda
| SPECIES | TIME | FAMILY | TALL | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Psittacosaurus meileyingensis | Early Cretaceous | Psittacosauridae | 0.8 m | 2 m | 30 kg | Herbivore | Jiufotang Formation, China | Parrot-beak plant crushing | Baby Kermit: "The 'Parrot Lizard'! He has a funny beak just like a giant bird!" |
| Bagaceratops rozhdestvenskyi | Late Cretaceous | Protoceratopidae | 0.5 m | 1 m | 22 kg | Herbivore | Djadochta Formation, Mongolia | Miniature hornless frill | Winnie the Pooh: "A very small, bumpy dinosaur. He looks like a little scaly piglet." |
| Leptoceratops gracilis | Late Cretaceous | Protoceratopidae | 0.8 m | 2 m | 100 kg | Herbivore | Scollard Formation, Canada | Deep jaw cropping | Clumsy Smurf: "Whoops! He doesn't have any horns, so at least I won't get poked!" |
| Montanoceratops cerorhynchus | Late Cretaceous | Protoceratopidae | 1 m | 3 m | 170 kg | Herbivore | St. Mary River Fm., Montana, USA | Nasal horn core | Dawn: "He's like a mini triceratops without the big brow horns. Still looks pretty tough." |
| Protoceratops hellenikorhinus | Late Cretaceous | Protoceratopidae | 0.8 m | 2.5 m | 180 kg | Herbivore | Bayan Mandahu, Inner Mongolia | Flaired display frill | Bugs Bunny: "The famous anchor of the Gobi desert, doc. Velociraptor's favorite wrestling partner!" |
| Brachyceratops montanensis | Late Cretaceous | Ceratopidae | 1 m | 3 m | 300 kg | Herbivore | Two Medicine Fm., Montana, USA | Juvenile horn structures | Baby Gonzo: "A pint-sized horned dinosaur! He's weird and small, just like me!" |
| Centrosaurus apertus | Late Cretaceous | Ceratopidae | 2.5 m | 6 m | 2.7 tons | Herbivore | Dinosaur Park Fm., Canada | Single curved nasal horn | Tigger: "Look at that hook on his nose! Perfect for bouncing through the prehistoric brush!" |
| Chasmosaurus belli | Late Cretaceous | Ceratopidae | 2 m | 5 m | 2 tons | Herbivore | Dinosaur Park Fm., Canada | Large rectangular frill | Slimer: "That giant frill looks like a big dinner tray! Imagine how many burgers could fit on there!" |
| Lokiceratops rangiformis | Late Cretaceous | Ceratopidae | 2.5 m | 6.7 m | 5 tons | Herbivore | Judith River Fm., Montana, USA | Giant curved frill hooks | Optimus Prime: "Named after a Norse god of mischief. Its massive frill blades are truly formidable." |
| Nasutoceratops titusi | Late Cretaceous | Ceratopidae | 2.5 m | 4.5 m | 1.5 tons | Herbivore | Kaiparowits Fm., Utah, USA | Bull-like curved horns | ALF: "Horns shaped like a cow? Does he produce prehistoric milk? Probably not." |
| Pachyrhinosaurus lakustai | Late Cretaceous | Ceratopidae | 2.5 m | 6 m | 3 tons | Herbivore | Wapiti; Hell Creek Formation, Alberta, Canada; Montana | Massive bony nose boss | Face: "Ouch! Instead of a horn, he has a big flat bone cushion on his snout!" |
| Pentaceratops sternbergii | Late Cretaceous | Ceratopidae | 4.2 m | 6.5 m | 5 tons | Herbivore | Kirtland Formation, New Mexico | Five-horned head shield | Tee Zeng: "Five horns and a giant shield. This guy is built like an ancient general." |
| Sinoceratops zhuchengensis | Late Cretaceous | Ceratopidae | 2.5 m | 6 m | 2 tons | Herbivore | Xingezhuang Fm., Shandong, China | Hooked frill ornaments | Alvin: "A horned dinosaur from China with a ring of hooks on his collar! Total rockstar style!" |
| Styracosaurus ovatus | Late Cretaceous | Ceratopidae | 2.5 m | 5.5 m | 2.7 tons | Herbivore | Dinosaur Park Fm., Canada | Long frill spike array | Daffy Duck: "He's wearing a crown of giant spikes! Talk about an attention-seeker!" |
| Triceratops horridus | Late Cretaceous | Ceratopidae | 3 m | 9 m | 9 tons | Herbivore | Hell Creek, Montana, USA | 3-horned defense shield | Papa Smurf: "The iconic three-horned face. A magnificent defender capable of standing up to the Tyrant King." |
5. Infraorder: Stegosauria (Plated Dinosaurs)
- Order: Ornithischia | Suborder: Thyreophora
| SPECIES | TIME | FAMILY | TALL | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Chungkingosaurus jiangbeiensis | Late Jurassic | Stegosauridae | 1.5 m | 4 m | 1 ton | Herbivore | Shaximiao Fm., Chongqing, China | Multi-spike thagomizer | Tee Zeng: "A smaller plated cousin, but that spiked tail looks incredibly dangerous." |
| Gigantspinosaurus sichuanensis | Late Jurassic | Stegosauridae | 1.5 m | 4.2 m | 700 kg | Herbivore | Shaximiao Formation, China | Giant shoulder spikes | Michelangelo: "Whoa, check out those massive shoulder swords! Radical defense, dude!" |
| Kentrosaurus aethiopicus | Late Jurassic | Stegosauridae | 1.5 m | 4.5 m | 1.1 tons | Herbivore | Tendaguru Beds, Tanzania | Long rear spine spikes | Hefty Smurf: "Plates in the front, giant needles in the back. This guy is 100% muscle and spikes!" |
| Stegosaurus stenops | Late Jurassic | Stegosauridae | 4 m | 9 m | 5 tons | Herbivore | Morrison Formation, Colorado, USA | Alternating back plates | Papa Smurf: "A classic marvel of nature. Those magnificent plates helped regulate its body heat." |
| Tuojiangosaurus multispinus | Late Jurassic | Stegosauridae | 2 m | 7 m | 2.8 tons | Herbivore | Shaximiao Formation, China | Cone-shaped plates | Simon: "Fossil evidence suggests its pointed back plates were highly effective at deterring predators." |
| Wuerhosaurus ordosensis | Early Cretaceous | Stegosauridae | 2 m | 7 m | 4 tons | Herbivore | Lianmuqin Formation, Wuerho, China | Flat, rectangular plates | Baby Miss Piggy: "His back plates are completely flat and wide! They look like beautiful fans." |
| Scelidosaurus harrisonii | Early Jurassic | Scelidosauridae | 1.2 m | 4 m | 270 kg | Herbivore | Charmouth, Dorset, England | Early armored scaling | Bugs Bunny: "An early ancestor of both the plated and armored dinosaurs, doc. A true evolutionary hybrid!" |
6. Infraorder: Ankylosauria (Armored & Club-Tailed Dinosaurs)
- Order: Ornithischia | Suborder: Thyreophora
| SPECIES | TIME | FAMILY | TALL | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Hylaeosaurus armatus | Early Cretaceous | Nodosauridae | 1.2 m | 5 m | 2 tons | Herbivore | Wealden Group, West Sussex, UK | Large neck spines | Dawn: "He doesn't have a tail club, but those giant shoulder spikes make him look like a moving fortress." |
| Nodosaurus textilis | Late Cretaceous | Nodosauridae | 1.5 m | 5.5 m | 2.5 tons | Herbivore | Frontier Formation, Wyoming, USA | Woven pebble armor | Garfield: "A bumpy, textured back. Looks like a walking waffle iron. Pass the syrup." |
| Panoplosaurus mirus | Late Cretaceous | Nodosauridae | 2 m | 6 m | 3.5 tons | Herbivore | Dinosaur Park Fm., Canada | Heavy overlapping skull plates | Optimus Prime: "An exceptional display of defensive engineering. Its skull is entirely reinforced with heavy armor." |
| Sauropelta edwardsorum | Early Cretaceous | Nodosauridae | 1.5 m | 5.2 m | 2.5 tons | Herbivore | Cloverly Formation, Montana, USA | Massive forward neck spikes | Ripjaws: "Good luck biting through that neck! It's covered in giant bony spikes!" |
| Silvisaurus condrayi | Early Cretaceous | Nodosauridae | 1 m | 4 m | 1 ton | Herbivore | Dakota Formation, Kansas, USA | Hollow nasal cavities | ALF: "An armored dino with a big hollow nose from Kansas. Sounds like a party animal." |
| Struthiosaurus transilvanicus | Late Cretaceous | Nodosauridae | 0.8 m | 2.5 m | 300 kg | Herbivore | Sânpetru Fm., Romania | Dwarf armored scaling | Clumsy Smurf: "He's small and covered in bumps! He fits right in with us Smurfs." |
| Ankylosaurus magniventris | Late Cretaceous | Ankylosauridae | 3.7 m | 10.8 m | 6 tons | Herbivore | Hell Creek, Montana, USA | Heavy bone tail club | Helicopter Chorus: "🎶 Swinging his tail with a heavy smash, keeping the predators back in a flash! 🎶" |
| Euoplocephalus tutus | Late Cretaceous | Ankylosauridae | 1.8 m | 5.5 m | 2.5 tons | Herbivore | Dinosaur Park Fm., Canada | Armored eyelids | Slimer: "Even his eyelids are made of solid bone! He can blink away attacks!" |
| Pinacosaurus grangeri | Late Cretaceous | Ankylosauridae | 1.4 m | 5 m | 1.9 tons | Herbivore | Djadochta Formation, Mongolia | Multi-hole respiratory system | Winnie the Pooh: "A very bumpy friend who lives in the dusty sand. He has extra holes in his nose to breathe easy." |
| Tarchia teresae | Late Cretaceous | Ankylosauridae | 2 m | 5.5 m | 2.5 tons | Herbivore | Barun Goyot Fm., Mongolia | Heavy-bulbed tail mallet | Alvin: "Look at that giant tail club mallet! He's ready to smash some drums!" |
🌊 Prehistoric Marine Reptiles ("Sea Monsters")
- Class: Reptilia | Orders: Mesosauria, Plesiosauria, Nothosauria, Ichthyosauria, Squamata
| SPECIES | TIME | ORDER / FAMILY | TALL / DEPTH | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Hylonomus latidens | Late Carboniferous | Protorothyrididae | 0.05 m | 0.2 m | 200 g | Insectivore | Joggins Fossil Cliffs, Nova Scotia, Canada | Agile climbing | Bugs Bunny: "The earliest known true reptile, doc! Basically the great-grandpa of every lizard on this list." |
| Mesosaurus tenuidens | Early Permian | Mesosauria / Mesosauridae | 0.2 m | 1 m | 2 kg | Piscivore / Crustaceans | Irati Formation, Brazil | Paddle-tail propulsion | Simon: "An essential anatomical indicator used by Alfred Wegener to corroborate his theory of continental drift." |
| Plesiosaurus dolichodeirus | Early Jurassic | Plesiosauria / Plesiosauridae | 1 m | 3.5 m | 400 kg | Piscivore | Blue Lias, Dorset, England | Interlocking tooth trap | Baby Kermit: "He's got a super long neck like a snake, but he's swimming like a big sea turtle! Yay!" |
| Cryptoclidus richardsoni | Late Jurassic | Plesiosauria / Cryptocleididae | 1.2 m | 4 m | 800 kg | Piscivore / Cephalopods | Oxford Clay, England | Needle-like fish sieving | Hefty Smurf: "Look at those overlapping thin teeth. Once a fish gets in there, it’s not smurfing out!" |
| Elasmosaurus platyurus | Late Cretaceous | Plesiosauria / Elasmosauridae | 2 m | 10.3 m | 2 tons | Piscivore | Pierre Shale, Kansas, USA | 72 neck vertebrae reach | Helicopter Chorus: "🎶 Dipping his head deep under the wave, looking for fishy snacks to crave! 🎶" |
| Attenborosaurus conybeari | Early Jurassic | Plesiosauria / Pliosauridae | 1.5 m | 5 m | 1 ton | Piscivore | Charmouth, Dorset, England | High-speed underwater cruise | Teodora: "Named after Sir David Attenborough! Now that is what I call legendary scientific fashion." |
| Kronosaurus queenslandicus | Early Cretaceous | Plesiosauria / Pliosauridae | 2.5 m | 10.5 m | 11 tons | Apex Carnivore | Toolebuc Formation, Australia | Crocodile-shattering bite | Ripjaws: "Massive skull, giant crushing jaws, and built like an underwater tank. This guy rules the deep!" |
| Liopleurodon ferox | Callovian (Jurassic) | Plesiosauria / Pliosauridae | 2.2 m | 6.4 m | 3 tons | Apex Carnivore | Oxford Clay, England | Directional smell tracking | Michelangelo: "Whoa, a magical Liopleurodon! This dude has nostrils that can smell exactly where dinner is hiding!" |
| Nothosaurus giganteus | Middle Triassic | Nothosauria / Nothosauridae | 1 m | 5.5 m | 800 kg | Piscivore | Muschelkalk, Germany | Amphibious beach hauling | Sid: "He hunts in the water but lounges on the rocks. Finally, a reptile who appreciates the art of sunbathing." |
| Ichthyosaurus conybeari | Early Jurassic | Ichthyosauria / Ichthyosauridae | 0.6 m | 2 m | 90 kg | Piscivore / Skuids | Blue Lias, Dorset, England | Deep dive respiration | Dawn: "He looks exactly like a prehistoric dolphin! But my books say he's 100% reptile." |
| Mosasaurus beaugei | Late Cretaceous | Squamata / Mosasauridae | 4.5 m | 50 m | 500 tons | Apex Carnivore | Oulad Abdoun Basin, Morocco | Pterygoid double-row teeth | Slimer: "He has an extra row of teeth in the top of his mouth! Think of how fast he can swallow a whole buffet!" |
| Tylosaurus bernardi | Late Cretaceous | Squamata / Mosasauridae | 3 m | 13 m | 8 tons | Apex Carnivore | Niobrara Chalk, Kansas, USA | Battering-ram snout | Optimus Prime: "A tactical predator utilizing a hardened, bone-reinforced snout to ram and incapacitate its targets." |
🦤 Pterosaurs (Flying Reptiles)
- Class: Reptilia | Order: Pterosauria
| SPECIES | TIME | SUBORDER / FAMILY | WINGSPAN | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Dimorphodon macronyx | Early Jurassic | Rhamphorhynchoidea / Dimorphodontidae | 1.4 m | 1 m | 2 kg | Piscivore / Insects | Blue Lias, Dorset, England | Dual-profile puffin teeth | Daffy Duck: "Look at that oversized skull! He’s trying to steal my look. Pure plagiarism!" |
| Eudimorphodon ranzii | Late Triassic | Rhamphorhynchoidea / Eudimorphodontidae | 1 m | 0.5 m | 1 kg | Piscivore | Cene, Lombardy, Italy | Multi-cusped crushing teeth | Brainy Smurf: "Fossil stomach contents explicitly prove this Triassic flyer was an expert fish hunter." |
| Anurognathus ammoni | Late Jurassic | Rhamphorhynchoidea / Rhamphorhynchidae | 0.5 m | 0.1 m | 40 g | Insectivore | Solnhofen Limestone, Germany | Nocturnal radar flight | Alvin: "A tiny, bug-eyed flying bat-lizard! He looks like he drank too much soda!" |
| Rhamphorhynchus etchesi | Late Jurassic | Rhamphorhynchoidea / Rhamphorhynchidae | 1.2 m | 0.5 m | 1.5 kg | Piscivore | Kimmeridge Clay, Dorset, UK | Diamond-rudder tail | Theodore: "His long tail has a little leaf shape at the end to help him steer through the air." |
| Scaphognathus crassirostris | Late Jurassic | Rhamphorhynchoidea / Rhamphorhynchidae | 0.9 m | 0.5 m | 1.2 kg | Omnivore / Small Vertebrates | Solnhofen, Germany | Rigid bone beak strike | Papa Smurf: "A stout-beaked flyer. This species played an important role in early pterosaur studies." |
| Sordes pilosus | Late Jurassic | Rhamphorhynchoidea / Rhamphorhynchidae | 0.6 m | 0.3 m | 200 g | Insectivore / Amphibians | Karabastau Fm., Kazakhstan | Pycnofiber fur insulation | Winnie the Pooh: "A very furry little flying friend. He looks like he’s wearing a warm winter sweater." |
| Dsungaripterus weii | Early Cretaceous | Pterodactyloidea / Dsungaripteridae | 3 m | 1.2 m | 15 kg | Durophage (Shellfish) | Lianmuqin Formation, China | Upturned shell-cracking beak | Garfield: "An upturned beak made for crushing clams. Wake me up when he finds a lasagna bed." |
| Caiuajara dobruskii | Early Cretaceous | Pterodactyloidea / Tapejaridae | 2.3 m | 0.8 m | 8 kg | Frugivore | Goio-Erê Formation, Brazil | Shark-fin skull crest | Tigger: "That giant sail on his head makes him look like a colorful bouncy kite! TTFN!" |
| Tapejara wellnhoferi | Early Cretaceous | Pterodactyloidea / Tapejaridae | 3.5 m | 1.1 m | 12 kg | Frugivore / Omnivore | Santana Formation, Brazil | Low-altitude rudder steering | Face: "Look at that giant sail! It’s shaped exactly like a sailboat fin!" |
| Pterodaustro guinazui | Early Cretaceous | Pterodactyloidea / Pterodaustriidae | 2.5 m | 1.2 m | 10 kg | Filter Feeder (Plankton) | Lagarcito Formation, Argentina | 1,000+ bristle teeth baleen | Baby Miss Piggy: "A flamingo-pterosaur! He strains his food through his teeth. How beautifully delicate." |
| Cearadactylus atrox | Early Cretaceous | Pterodactyloidea / Pterodactylidae | 4 m | 1.5 m | 15 kg | Piscivore | Romualdo Formation, Brazil | Kinked interlocking fish trap | Hefty Smurf: "Those crooked front teeth look like a pair of absolute combat pliers!" |
| Pterodactylus antiquus | Late Jurassic | Pterodactyloidea / Pterodactylidae | 1 m | 0.3 m | 1 kg | Piscivore / Invertebrates | Solnhofen, Germany | Straight-beak target strike | Clumsy Smurf: "Whoops! Watch out for that long pointy beak, I don't want it popping my hat!" |
| Pteranodon sternbergi | Late Cretaceous | Pterodactyloidea / Ornithocheiridae | 6 m | 2 m | 25 kg | Piscivore | Niobrara Chalk, Kansas, USA | Backward-curved crest counterweight | Baby Gonzo: "Look at that magnificent crested skull structure! Now that is a beautifully weird bird." |
| Quetzalcoatlus lawsoni | Late Cretaceous | Pterodactyloidea / Ornithocheiridae | 25.5 m | 12.2 m | 500,000 kg | Carnivore / Scavenger | Javelina Formation, Texas, USA | Terrestrial stork stalking | ALF: "A flying reptile the size of a horse that walks around on its wings? Talk about a bad dream." |
🐀 Non-Reptiles & Synapsids ("Prehistoric Mammal Cousins")
- Class: Mammalia / Synapsida
| SPECIES | TIME | ORDER / FAMILY | TALL | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Alphadon halleyi | Late Cretaceous | Marsupialia / Alphadontidae | 0.1 m | 0.3 m | 400 g | Omnivore / Insects | Hell Creek, Montana, USA | Arboreal branch grasping | Simon: "An early metatherian mammal that successfully coexisted directly beneath the massive dinosaurs." |
| Bulbasaurus phylloxyron | Late Permian | Dicynodontia / Geikiidae | 0.3 m | 0.8 m | 15 kg | Herbivore | Balfour Formation, South Africa | Bulbous nasal razor beak | Tee Zeng: "Its name literally means 'Leaf Razor'! Sounds like a pocket monster is hiding in the Permian!" |
| Dimetrodon grandis | Early Permian | Pelycosauria / Sphenacodontidae | 1.8 m | 3.5 m | 250 kg | Apex Carnivore | Texas Red Beds, USA | Sail-back thermal management | Bugs Bunny: "People always call this doc a dinosaur, but he's actually more related to us mammals!" |
| Lystrosaurus curvatus | Late Permian / Early Triassic | Dicynodontia / Lystrosauridae | 0.4 m | 1 m | 90 kg | Herbivore | Beaufort Group, South Africa | Extinction burrow survival | Sid: "A shovel-faced survivor that made it through the biggest mass extinction ever. Modern sloths approve." |
🦈 Prehistoric Fish & Ancient Sharks
- Class: Placodermi / Chondrichthyes
| SPECIES | TIME | ORDER / FAMILY | DEPTH | SIZE | WEIGHT | DIET | LOCATION / DIGSITE | SPECIAL SKILLS | CARTOON ALL-STARS'S COMMENTS |
|---|---|---|---|---|---|---|---|---|---|
| Dunkleosteus amblyodoratus | Late Devonian | Arthrodira / Dinichthyidae | 4 m | 14 m | 6 tons | Apex Carnivore | Cleveland Shale, Ohio, USA | Self-sharpening jaw plates | Michelangelo: "No teeth, just solid armor-plated blades for a mouth! Talk about a radical buzzsaw bite!" |
| Otodus megalodon | Miocene / Pliocene | Lamniformes / Otodontidae | 4.5 m | 15 m | 50 tons | Apex Carnivore | Calvert Formation, Maryland, USA | 40,000-pound bite pressure | Huey, Dewey, & Louie: "The absolute king of the oceans! Even a Tyrannosaurus rex wouldn't want to swim with this guy!" |
If you want to keep expanding this world guide, let me know if you would like to:
- Look into the Cenozoic Ice Age megafauna (Mammoths, Sabertooths) with Sid and the team.
- Deep dive into a specific creature's fossil discovery history.
- Craft short scripts of these characters interacting directly with one of these sea or air monsters
Dinosaur Facts and Figures
Early Theropoda Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Hip Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Herrerasaurus ischigualastensis (Holotype: PVL 2566) | Late Triassic (Carnian, ~231.4 Ma) | Height: ~0.5 m
Length: ~3.0–6.0 m Mass: ~200–350 kg |
Formation: Ischigualasto Formation, Argentina | "Ale, look at those flexible lower jaw joints! This hyper-carnivorous basal beast shows that early predators were already mastering primitive kinetic skulls long before the Jurassic giants ever walked the valley." |
| Staurikosaurus pricei (Holotype: MCZ 4139) | Late Triassic (Carnian, ~233.2 Ma) | Height: ~0.8 m
Length: ~2.25 m Mass: ~30 kg |
Formation: Santa Maria Formation, Brazil | "Such a slender, agile hunter! Its short body and long tail tell me it relied entirely on quick, bounding strikes rather than brute force to catch prey in those ancient floodplains." |
| Abelisaurus comahuensis (Holotype: MCV 878) | Late Cretaceous (Campanian, ~80 Ma) | Height: ~2.5 m
Length: ~7.0–9.0 m Mass: ~1.4–2.0 metric tons |
Formation: Allen Formation, Argentina | "Look at the rugged skull ornamentation without horns! Even though we are missing most of its skeleton, its skull geometry screams specialized apex ambush predator." |
| Carnotaurus sastrei (Holotype: MACN-CH 894) | Late Cretaceous (Campanian–Maastrichtian, ~72 Ma) | Height: ~3.0 m
Length: ~7.5–8.0 m Mass: ~1.3–2.1 metric tons |
Formation: La Colonia Formation, Argentina | "The meat-eating bull with actual horns! And those ridiculously stubby arms make my archaeological tools look oversized. Still, its rigid, deep snout was built for high-speed slash-and-grab attacks!" |
| Ceratosaurus nasicornis (Holotype: USNM 4735) | Late Jurassic (Kimmeridgian–Tithonian, ~152 Ma) | Height: ~1.8 m
Length: ~5.3–7.0 m Mass: ~500–980 kg |
Formation: Morrison Formation, USA | "That prominent nasal horn and the osteoderms running down its back give it such a striking, dragon-like silhouette. A true classic of the Late Jurassic predator guild!" |
| Coelophysis bauri (Lectotype: AMNH 7224) | Late Triassic (Norian, ~208–201 Ma) | Height: ~0.5 m
Length: ~3.0 m Mass: ~15–25 kg |
Formation: Chinle Formation, USA | "Swarming bonebeds like Ghost Ranch prove these slender coelophysids hunted in packs! Those razor-sharp, serrated teeth were engineered for lightning-fast insect and small vertebrate snags." |
| Dilophosaurus wetherilli (Holotype: UCMP 37302) | Early Jurassic (Sinemurian, ~193 Ma) | Height: ~1.7 m
Length: ~6.0–7.0 m Mass: ~400 kg |
Formation: Kayenta Formation, USA | "Forget the fictional movie spitting venom—this crested apex predator of the Early Jurassic had a delicate, notched upper jaw that hints it might have specialized in fish or smaller, agile prey!" |
| Liliensternus liliensterni (Lectotype: MB.R.2175) | Late Triassic (Norian, ~210–201 Ma) | Height: ~1.0 m
Length: ~5.15 m Mass: ~127 kg |
Formation: Trossingen Formation, Germany | "A magnificent European basal neotheropod! Its pneumatic vertebrae and hollow limb bones show just how early evolutionary experimentation with lightweight, agile frames began." |
| Majungasaurus crenatissimus (Holotype: MNHN 1931-3) | Late Cretaceous (Maastrichtian, ~70–66 Ma) | Height: ~2.1 m
Length: ~6.0–8.0 m Mass: ~1.1 metric tons |
Formation: Maevarano Formation, Madagascar | "Cannibalism confirmed through deep tooth marks on its own kind! This short-snouted, dome-headed abelisaurid proves that Late Cretaceous island ecosystems were utterly brutal." |
Tetanurae Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Hip Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Eustreptospondylus oxoniensis
(Holotype: OUMNH J.13558) |
Middle Jurassic (Callovian, ~165 Ma) | Height: ~1.5 m
Length: ~4.6–6.0 m Mass: ~200–300 kg |
Formation: Oxford Clay Formation, England | "A classic coastal dweller! Finding its lone skeleton washed up in marine clays suggests this megalosaurid might have scavenged along ancient shorelines or floated out to sea." |
| Marshosaurus bicentesimus
(Holotype: UU VP 6389) |
Late Jurassic (Kimmeridgian, ~155 Ma) | Height: ~1.0 m
Length: ~5.0–6.0 m Mass: ~140–200 kg |
Formation: Morrison Formation, USA | "Named in honor of Othniel Charles Marsh during the American bicentennial, this slender middle-tier predator quietly shared the Morrison landscape with giants like Allosaurus." |
| Metriacanthosaurus parkeri
(Holotype: OUMNH J.12144) |
Late Jurassic (Oxfordian, ~160 Ma) | Height: ~2.0 m
Length: ~8.0 m Mass: ~1.0 metric ton |
Formation: Oxford Clay Formation, England | "Look at those unusually tall neural spines on its back! They aren't quite a full sail like Spinosaurus, but they definitely gave it a striking, high-backed profile in the Jurassic mist." |
| Cryolophosaurus ellioti
(Holotype: FMNH PR1821) |
Early Jurassic (Pliensbachian, ~194 Ma) | Height: ~2.0 m
Length: ~6.5 m Mass: ~465 kg |
Formation: Hanson Formation, Antarctica | "The frozen crest of Antarctica! Finding a carnivorous theropod with a bizarre, transverse 'Elvis pompadour' crest right near the South Pole proves these dinosaurs adapted to polar darkness and seasonal chill." |
| Poekilopleuron bucklandii
(Holotype: Destroyed in WWII) |
Middle Jurassic (Bathonian, ~167 Ma) | Height: ~1.5 m
Length: ~6.0 m Mass: ~300–400 kg |
Formation: Marnes de Dives Formation, France | "One of the earliest named French dinosaurs! Even though the original holotype was lost to history during World War II, its legacy in early tetanuran taxonomy remains monumental." |
| Torvosaurus gurneyi
(Holotype: ML 1100) |
Late Jurassic (Kimmeridgian–Tithonian, ~150 Ma) | Height: ~2.5 m
Length: ~10.0 m Mass: ~2.0 metric tons |
Formation: Lourinhã Formation, Portugal | "The savage lion of Late Jurassic Europe! Its immensely thick teeth and massive arms meant it could easily contest kills with anything else roaming the Iberian floodplains." |
| Acrocanthosaurus atokensis
(Holotype: SMU 74677) |
Early Cretaceous (Aptian–Albian, ~113–110 Ma) | Height: ~3.0 m
Length: ~11.5 m Mass: ~5.6–6.2 metric tons |
Formation: Antlers Formation, USA | "That muscular ridge running down its spine wasn't a fragile sail—it anchored powerful muscle sheets for a devastating strike. A true apex terror of the early Cretaceous!" |
| Carcharodontosaurus iguidensis
(Holotype: MNHN GDF 512) |
Late Cretaceous (Cenomanian, ~95 Ma) | Height: ~3.5 m
Length: ~10.0–12.0 m Mass: ~4.0 metric tons |
Formation: Echkar Formation, Niger | "Shark-toothed terror of the Sahara! Those serrated blades were custom-built to slice deep chunks of flesh out of massive titanosaur prey in North African river systems." |
| Giganotosaurus carolinii
(Holotype: MUCPv-Ch1) |
Late Cretaceous (Cenomanian, ~97–96 Ma) | Height: ~3.7 m
Length: ~12.2–13.2 m Mass: ~6.5–8.0 metric tons |
Formation: Candeleros Formation, Argentina | "Bigger than T. rex by length, with a skull built like an absolute crushing machine. South America's supreme apex predator was a masterpiece of specialized carnivory!" |
| Allosaurus europaeus
(Holotype: ML 415) |
Late Jurassic (Kimmeridgian, ~152 Ma) | Height: ~2.9 m
Length: ~12.0 m Mass: ~4.5 metric tons |
Formation: Lourinhã Formation, Portugal / Morrison Formation, USA | "The European cousin of the classic American Allosaurus! Proving that this genus was a wildly successful trans-Atlantic hunter across varied Jurassic archipelagos." |
| Yangchuanosaurus zigongensis
(Holotype: CV 00101) |
Middle to Late Jurassic (Callovian–Oxfordian, ~165 Ma) | Height: ~2.2 m
Length: ~8.0–11.0 m Mass: ~2.4 metric tons |
Formation: Shaximiao Formation, China | "Asia's answer to Allosaurus! With a rugged nose horn and a heavily armored skull structure, it dominated the lush Jurassic ecosystems of Sichuan province." |
| Baryonyx walkeri
(Holotype: NHMUK VP R9951) |
Early Cretaceous (Barremian, ~125 Ma) | Height: ~2.0 m
Length: ~7.5–8.5 m Mass: ~1.2–1.7 metric tons |
Formation: Weald Clay Group, England | "That enormous, sickle-shaped thumb claw and crocodile-like snout make it unmistakably piscivorous. Scales of fossilized fish inside its ribcage give us a direct window into its diet!" |
| Spinosaurus aegyptiacus
(Neotype: FSAC-CK 114) |
Late Cretaceous (Cenomanian, ~95–93 Ma) | Height: ~4.0 m
Length: ~14.0 m Mass: ~6.0–7.5 metric tons |
Formation: Kem Kem Group, Morocco | "The ultimate river monster! With a paddle-like tail, dense bones for ballast, and a gigantic dorsal sail, it traded dry-land speed to become a fully aquatic ambush predator." |
| Suchomimus tenerensis
(Holotype: MNHN GDF 500) |
Early Cretaceous (Aptian–Albian, ~112 Ma) | Height: ~2.5 m
Length: ~10.0–11.0 m Mass: ~3.5–5.2 metric tons |
Formation: Elrhaz Formation, Niger | "The crocodile mimic of the African desert! Its long, slender jaws and powerful forelimbs were expertly engineered to pluck giant prehistoric coelacanths straight out of river channels." |
| Albertosaurus sarcophagus
(Holotype: UAM Z-1) |
Late Cretaceous (Maastrichtian, ~70 Ma) | Height: ~2.4 m
Length: ~8.0–9.0 m Mass: ~1.7–2.0 metric tons |
Formation: Horseshoe Canyon Formation, Canada | "A slender, lightning-fast tyrannosaurid! Bonebed discoveries up in Alberta suggest these sleek hunters may have lived and hunted in coordinated family groups." |
| Alioramus altai
(Holotype: IGM 100/1844) |
Late Cretaceous (Maastrichtian, ~70 Ma) | Height: ~1.2 m
Length: ~5.0–6.0 m Mass: ~350 kg |
Formation: Nemegt Formation, Mongolia | "Look at that low, slender snout covered in distinctive hornlets! It was like a miniature, hyper-agile cousin to Tarbosaurus, dodging the massive apex predators of the Gobi." |
| Daspletosaurus horneri
(Holotype: MOR 590) |
Late Cretaceous (Campanian, ~77–75 Ma) | Height: ~2.5 m
Length: ~9.0 m Mass: ~2.5 metric tons |
Formation: Two Medicine Formation, USA | "Fossil skin impressions show it lacked lips and instead had armored, crocodile-like facial scales filled with sensory nerves. Talk about an intimidating tactical hunter!" |
| Dryptosaurus aquilunguis
(Holotype: ANSP 9995) |
Late Cretaceous (Maastrichtian, ~66 Ma) | Height: ~2.0 m
Length: ~7.5 m Mass: ~1.2 metric tons |
Formation: Marshalltown Formation, USA | "An eastern North American oddity! Long before tyrannosaurs grew to colossal size, Dryptosaurus rocked bizarrely massive, hand-cleaving claws that set it apart from standard tyrannosauroids." |
| Gorgosaurus libratus
(Holotype: NMC 2120) |
Late Cretaceous (Campanian, ~76–75 Ma) | Height: ~2.4 m
Length: ~8.5–9.0 m Mass: ~2.0–2.8 metric tons |
Formation: Dinosaur Park Formation, Canada | "Slightly smaller and sleeker than T. rex, this apex predator shared the bustling Late Cretaceous Canadian floodplains with a staggering diversity of horned dinosaurs." |
| Moros intrepidus
(Holotype: NCSM 33392) |
Late Cretaceous (Cenomanian, ~96 Ma) | Height: ~0.4 m
Length: ~1.2 m Mass: ~11 kg |
Formation: Cedar Mountain Formation, USA | "The tiny harbinger of doom! This delicate, chicken-sized tyrannosauroid shows how small these apex rulers started before global climates shifted and allowed them to take over." |
| Nanotyrannus lethaeus
(Holotype: CMNH 7541) |
Late Cretaceous (Maastrichtian, ~66 Ma) | Height: ~1.5 m
Length: ~5.0–6.5 m Mass: ~350–900 kg |
Formation: Hell Creek Formation, USA | "Whether it's a valid pygmy tyrannosaurid or just an adolescent T. rex, those slender jaws and blade-like teeth are sleek enough to spark endless paleo-debates!" |
| Qianzhousaurus sinensis
(Holotype: GMV V2153) |
Late Cretaceous (Maastrichtian, ~66 Ma) | Height: ~2.0 m
Length: ~6.3 m Mass: ~750 kg |
Formation: Nanxiong Formation, China | "Pinocchio rex! Its extraordinarily long, slender snout proves that tyrannosaurids experimented with different feeding niches, hunting faster, more agile prey in Cretaceous Asia." |
| Tarbosaurus bataar
(Holotype: PIN 551-1) |
Late Cretaceous (Maastrichtian, ~70–66 Ma) | Height: ~3.2 m
Length: ~10.0–12.0 m Mass: ~4.0–5.0 metric tons |
Formation: Nemegt Formation, Mongolia | "The Asiatic king! Its rigid skull structure was custom-evolved to absorb massive impact forces while wrestling giant, neck-stretching sauropods in the Mongolian dust." |
| Tromerosaurus solumons
(Hypothetical / Reference Taxon) |
Late Cretaceous (Maastrichtian, ~66 Ma) | Height: ~2.8 m
Length: ~9.5 m Mass: ~2.5 metric tons |
Formation: Hell Creek Formation, USA | "A fascinating lesser-known entry in the tyrannosauroid record, representing the complex mosaic of mid-to-large theropods occupying the shrinking Cretaceous margins." |
| Tyrannosaurus rex
(Holotype: FMNH PR2081 / Sue) |
Late Cretaceous (Maastrichtian, ~68–66 Ma) | Height: ~3.6–5.0 m
Length: ~12.3–15.0 m Mass: ~8.4–10.5 metric tons |
Formation: Hell Creek Formation, USA / Frenchman Formation, Canada | "The undisputed tyrant lizard king! With a bite force capable of crushing solid bone and binocular vision sharper than a hawk's, it remains the ultimate icon of prehistory." |
Coelurosauria Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Hip Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Coelurus fragilis
(Holotype: YPM 2010) |
Late Jurassic (Kimmeridgian, ~155 Ma) | Height: ~0.6 m
Length: ~2.0 m Mass: ~13–20 kg |
Formation: Morrison Formation, USA | "Such a graceful, slender little hunter! Othniel Charles Marsh named it for its hollow, fragile vertebrae, proving that early coelurosaurs were built like lightning-fast avian athletes." |
| Ornitholestes hermanni
(Holotype: AMNH 619) |
Late Jurassic (Kimmeridgian, ~154 Ma) | Height: ~0.7 m
Length: ~2.0 m Mass: ~12–15 kg |
Formation: Morrison Formation, USA | "That slight bump or possible nasal horn on its snout always sparked debate—was it for display? Either way, this bird-robber was darting through the Morrison ferns with incredible agility." |
| Compsognathus longipes
(Holotype: BSP AS I 563) |
Late Jurassic (Tithonian, ~150 Ma) | Height: ~0.25 m
Length: ~1.0 m Mass: ~0.83–3.5 kg |
Formation: Solnhofen Limestone, Germany | "The classic 'dainty jaw'! Famous for being preserved in fine German limestone with a tiny lizard trapped inside its belly. It shatters the myth that all dinosaurs were house-sized monsters." |
| Sinosauropteryx lingyuanensis
(Holotype: NIGP 127587) |
Early Cretaceous (Barremian, ~125 Ma) | Height: ~0.3 m
Length: ~0.68–1.07 m Mass: ~0.55 kg |
Formation: Yixian Formation, China | "The very first dinosaur found with preserved primitive feather filaments! Melanosome traces even let us know it rocked a reddish-brown coat with a striped tail." |
| Proceratosaurus bradleyi
(Holotype: NHMUK R4860) |
Middle Jurassic (Bathonian, ~167 Ma) | Height: ~0.6 m
Length: ~3.0 m Mass: ~40 kg |
Formation: Great Oolite Group, England | "Long before giant tyrannosaurs ruled, this little English predator was already sporting the early version of a midline nasal crest. A true ancestral pioneer!" |
| Yutyrannus huali
(Holotype: ZCDM V5000) |
Early Cretaceous (Aptian, ~125 Ma) | Height: ~2.5 m
Length: ~9.0 m Mass: ~1.4 metric tons |
Formation: Yixian Formation, China | "Feathered tyrannosauroids the size of a bear! Finding 30-foot apex predators covered in broad, filamentous 'dusted' feathers completely changed how we picture cold-climate hunters." |
| Archaeornithomimus asiaticus
(Holotype: PIN 31-1) |
Late Cretaceous (Campanian, ~75 Ma) | Height: ~1.3 m
Length: ~3.3 m Mass: ~50 kg |
Formation: Iren Dabasu Formation, China | "An ancient ostrich-mimic from the deserts of Inner Mongolia! Built for sheer speed, with long stride lengths that left modern roadrunners in the dust." |
| Deinocheirus mirificus
(Holotype: MPC-D 100/127) |
Late Cretaceous (Maastrichtian, ~70–69 Ma) | Height: ~6.0 m
Length: ~15.0 m Mass: ~6.3–7.0 metric tons |
Formation: Nemegt Formation, Mongolia | "The ultimate paleo-mystery solved! What started as just a pair of enormous 8-foot-long arms turned out to be a humped, duck-billed, mega-sized omnivore. Truly 'horrible hands'!" |
| Dromiceiomimus samueli
(Holotype: UALVP 52631) |
Late Cretaceous (Campanian, ~76 Ma) | Height: ~1.5 m
Length: ~3.5 m Mass: ~100 kg |
Formation: Dinosaur Park Formation, Canada | "Named for its striking resemblance to the modern emu! Its large eyes and sleek, toothless beak indicate it was a keen-sighted forager on the Canadian floodplains." |
| Gallimimus bullatus
(Holotype: GI SPS 100/11) |
Late Cretaceous (Maastrichtian, ~70 Ma) | Height: ~2.0 m
Length: ~6.0 m Mass: ~440 kg |
Formation: Nemegt Formation, Mongolia | "The chicken-mimic that stole the show in Jurassic Park! These massive flocking speedsters could outpace almost any predator in the Nemegt basin." |
| Ornithomimus velox
(Holotype: YPM 542) |
Late Cretaceous (Campanian, ~75 Ma) | Height: ~1.4 m
Length: ~3.5–3.8 m Mass: ~100–150 kg |
Formation: Dinosaur Park Formation, Canada | "One of North America's premier ostrich dinosaurs. Fossil quill knobs on its arms confirm it had a full fan of wing feathers used for display or brooding!" |
| Struthiomimus altus
(Holotype: AMNH 5339) |
Late Cretaceous (Campanian, ~76 Ma) | Height: ~1.4 m
Length: ~4.3 m Mass: ~150 kg |
Formation: Dinosaur Park Formation, Canada | "The ostrich mimic par excellence! With long, slender grasping hands and a specialized keratinous beak, it swept up plants, insects, and small critters with ease." |
| Avimimus nemegtensis
(Holotype: PIN 3907/1) |
Late Cretaceous (Campanian–Maastrichtian, ~70 Ma) | Height: ~0.5 m
Length: ~1.5 m Mass: ~15 kg |
Formation: Nemegt Formation, Mongolia | "Bird mimic supreme! Short-faced, toothless, and sporting a pygostyle tail, it looked remarkably like a ground-dwelling modern bird millions of years before its time." |
| Chirostenotes pergracilis
(Holotype: NMC 8538) |
Late Cretaceous (Campanian, ~75 Ma) | Height: ~0.9 m
Length: ~2.8 m Mass: |
Formation: Dinosaur Park Formation, Canada | "A bizarre caenagnathid oviraptorosaur with a toothless jaw, deep mandible, and weirdly fused claw bones. Every new bone we find adds to its puzzle!" |
| Conchoraptor gracilis
(Holotype: GI SPS 100/20) |
Late Cretaceous (Campanian, ~70 Ma) | Height: ~0.4 m
Length: ~1.0–1.4 m Mass: ~20 kg |
Formation: Djadokhta Formation, Mongolia | "Named after conch shells because scientists originally wondered if it crushed mollusks with its deep beak. Its light, pneumatic skull is a marvel of evolutionary engineering." |
| Elmisaurus rarus
(Holotype: ZPAL MgD-I/17) |
Late Cretaceous (Maastrichtian, ~70 Ma) | Height: ~0.8 m
Length: ~2.0 m Mass: ~30 kg |
Formation: Nemegt Formation, Mongolia | "Known famously from slender hand and foot bones, this rare oviraptorosaurian cousin glided silently through the ancient Asian forests." |
| Oviraptor philoceratops
(Holotype: AMNH 6517) |
Late Cretaceous (Campanian, ~75 Ma) | Height: ~0.5 m
Length: ~1.6 m Mass: ~33–40 kg |
Formation: Djadokhta Formation, Mongolia | "Framed unfairly as an 'egg thief' because its fossils were found near nests—which we later discovered were actually its own nests! A dedicated, brooding parent of the Gobi." |
| Protarchaeopteryx robusta
(Holotype: IVPP V9653) |
Early Cretaceous (Barremian, ~125 Ma) | Height: ~0.3 m
Length: ~1.0 m Mass: ~1.5–2.0 kg |
Formation: Yixian Formation, China | "Symmetrical pennaceous feathers on its tail and arms! It couldn't truly fly, but its display plumage was a dazzling preview of the avian revolution." |
Advanced Theropods & Avialae Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Hip Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Erlikosaurus andrewsi
(Holotype: GI SPS 100/111) |
Late Cretaceous (Cenomanian–Turonian, ~90 Ma) | Height: ~2.0 m
Length: ~4.5–6.0 m Mass: ~500 kg |
Formation: Bayan Shireh Formation, Mongolia | "Look at those leaf-shaped teeth and tiny beak! This herbivorous therizinosaur used its pot-belly to ferment plants, completely defying what a meat-eater's family tree looks like." |
| Segnosaurus galbinensis
(Holotype: GI SPS 100/82) |
Late Cretaceous (Cenomanian–Turonian, ~93–89 Ma) | Height: ~2.5 m
Length: ~6.0–7.0 m Mass: ~1.3 metric tons |
Formation: Bayan Shireh Formation, Mongolia | "When scientists first found its weird pelvic bones and turtle-like lower jaws, they had no idea what it was. A bizarre, slow-moving browser of Cretaceous river basins!" |
| Therizinosaurus cheloniformis
(Holotype: PIN 551-483) |
Late Cretaceous (Maastrichtian, ~70 Ma) | Height: ~4.5–5.0 m
Length: ~10.0 m Mass: ~5.0 metric tons |
Formation: Nemegt Formation, Mongolia | "Those three-foot-long scythe claws look like a horror movie prop, but they were actually used to pull down high branches and foliage. The ultimate gentle giant of the Asian forests!" |
| Saurornithoides mongoliensis
(Holotype: AMNH 6516) |
Late Cretaceous (Campanian, ~75 Ma) | Height: ~0.6 m
Length: ~2.0–3.0 m Mass: ~20–30 kg |
Formation: Djadokhta Formation, Mongolia | "Lizard-bird of the Gobi! With an enlarged braincase and binocular vision, its hunting intelligence was leagues ahead of standard primitive predators." |
| Stenonychosaurus inequalis
(Holotype: UCMZ 12) |
Late Cretaceous (Campanian, ~76 Ma) | Height: ~0.9 m
Length: ~2.4 m Mass: ~35–50 kg |
Formation: Dinosaur Park Formation, Canada | "North America's stealthy nocturnal hunter! Those massive, pivoting eyes meant it could track down small mammals under the dim canopy of the Late Cretaceous." |
| Troodon formosus
(Holotype: YPM 1903) |
Late Cretaceous (Campanian, ~77–74 Ma) | Height: ~0.9 m
Length: ~2.4 m Mass: ~45–50 kg |
Formation: Judith River Group, USA | "Starting out life known from just a single, strangely serrated tooth, this iconic troodontid sparked decades of debate about dinosaur intelligence and sensory prowess." |
| Bambiraptor feinbergi
(Holotype: AMNH FR 30556) |
Late Cretaceous (Campanian, ~72 Ma) | Height: ~0.3 m
Length: ~0.7–1.0 m Mass: ~2–3 kg |
Formation: Two Medicine Formation, Canada / USA | "Named after the famous deer! This juvenile dromaeosaurid specimen gave us an incredible look at bird-like brain expansions and agile forest leaping." |
| Dakotaraptor steini
(Holotype: PBMNH P.10.113.T) |
Late Cretaceous (Maastrichtian, ~66 Ma) | Height: ~1.8 m
Length: ~5.5 m Mass: ~250–350 kg |
Formation: Hell Creek Formation, USA | "A giant, heavyweight raptor sharing the very same turf as T. rex! Those 9.5-inch quill knobs on its forearms prove it rocked full, majestic wings." |
| Deinonychus antirrhopus
(Holotype: YPM 5205) |
Early Cretaceous (Aptian, ~115–108 Ma) | Height: ~1.0 m
Length: ~3.4 m Mass: ~73–100 kg |
Formation: Cloverly Formation, USA | "The dinosaur that sparked the 'Renaissance'! Its lethal sickle claw and active posture completely revolutionized how the world viewed warm-blooded, dynamic dinosaurs." |
| Dromaeosaurus albertensis
(Holotype: NMC 5711) |
Late Cretaceous (Campanian, ~76 Ma) | Height: ~0.7 m
Length: ~2.0 m Mass: ~15–20 kg |
Formation: Dinosaur Park Formation, Canada | "The robust trailblazer of the Canadian badlands! Shorter-snouted and built with a heavier bite force than its sleeker raptor cousins." |
| Saurornitholestes sullivani
(Holotype: SMP VP-1270) |
Late Cretaceous (Campanian, ~75 Ma) | Height: ~0.5 m
Length: ~1.8 m Mass: ~10 kg |
Formation: Kirtland Formation, USA | "An agile, cat-sized hunter dashing through southwestern floodplains. Its exceptionally sharp senses made it a master of catching elusive prey." |
| Velociraptor osmolskae
(Holotype: MPC-D 100/985) |
Late Cretaceous (Campanian, ~75–71 Ma) | Height: ~0.5 m
Length: ~2.0 m Mass: ~15 kg |
Formation: Bayan Mandahu Formation, China | "The Asian counterpart to V. mongoliensis! Proof that these lightning-fast pack hunters ruled the dunes across multiple regions of the Gobi desert." |
| Microraptor gui
(Holotype: IVPP V13352) |
Early Cretaceous (Aptian, ~120 Ma) | Height: ~0.2 m
Length: ~0.77–0.8 m Mass: ~1 kg |
Formation: Jiufotang Formation, China | "The four-winged glider! With long, asymmetrical feathers on both its arms and its hind legs, it drifted gracefully from tree to tree in prehistoric Liaoning." |
| Archaeopteryx albersdoerferi
(Holotype / Specimen: Bürgermeister-Müller Museum) |
Late Jurassic (Tithonian, ~150 Ma) | Height: ~0.3 m
Length: ~0.5 m Mass: ~0.8–1.0 kg |
Formation: Solnhofen Limestone, Germany | "The ultimate transitional icon! Featuring teeth, a long bony tail, and full flight feathers, it bridges the gap between terrifying theropod dinosaurs and modern birds with absolute grace." |
Sauropodomorpha (Prosauropoda) Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Hip Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Anchisaurus polyzelus
(Holotype: YPM 1883) |
Early Jurassic (Hettangian–Sinemurian, ~200–188 Ma) | Height: ~0.7 m
Length: ~2.0–2.5 m Mass: ~27–50 kg |
Formation: Portland Formation, USA | "One of the earliest dinosaur fossils ever found in North America! It could walk on two legs or four, showing the evolutionary transition toward true browsing giants." |
| Efraasia minor
(Holotype: SMNS 12667) |
Late Triassic (Norian, ~210 Ma) | Height: ~0.8 m
Length: ~4.0–6.5 m Mass: ~100–130 kg |
Formation: Löwenstein Formation, Germany | "A slender German prosauropod with long, grasping hands! Perfect for stripping down early Triassic vegetation before the super-sauropods took over." |
| Eoraptor lunensis
(Holotype: PVSJ 512) |
Late Triassic (Carnian, ~231 Ma) | Height: ~0.4 m
Length: ~1.0–1.7 m Mass: ~10–17 kg |
Formation: Ischigualasto Formation, Argentina | "The dawn plunderer! Sitting right at the root of the dinosaur family tree, showing us how small and nimble the common ancestor of both theropods and sauropods really was." |
| Massospondylus kaalae
(Holotype: BP/1/4779) |
Early Jurassic (Sinemurian, ~200–183 Ma) | Height: ~1.0 m
Length: ~4.0–5.0 m Mass: ~150–300 kg |
Formation: Elliot Formation, South Africa | "A classic South African long-neck! Its thumb claws were built like curved daggers, likely used for defense or gathering food down in ancient river valleys." |
| Melanorosaurus readi
(Holotype: SAM-PK-3449) |
Late Triassic to Early Jurassic (Norian–Sinemurian, ~216–200 Ma) | Height: ~2.5 m
Length: ~8.0–12.0 m Mass: ~1.0–3.3 metric tons |
Formation: Lower Elliot Formation, South Africa | "Look at that heavy, pillar-like limb structure! It represents the exact moment prosauropods started bulking up into true, quadrupedal sauropod titans." |
| Mussaurus patagonicus
(Holotype: PVL 4097) |
Late Triassic (Norian, ~215 Ma) | Height: ~0.3 m (Adults: ~1.5 m)
Length: ~1.5 m (Adults: ~6.0 m) Mass: ~1.0 kg (Adults: ~1.0 metric ton) |
Formation: El Tranquil Formation, Argentina | "The 'mouse lizard'! Famous for finding exquisite fossilized hatchlings nested together in Argentina, showing how these giants started life tiny." |
| Plateosaurus gracilis
(Holotype: SMNS 13200) |
Late Triassic (Norian, ~214–204 Ma) | Height: ~2.0 m
Length: ~5.0–8.0 m Mass: ~600–700 kg |
Formation: Trossingen Formation, Germany | "The great German swamp-dweller! Bonebeds packed with dozens of individuals prove they roamed in large herds across central Europe long before the Jurassic." |
| Riojasaurus incertus
(Holotype: PVL 3808) |
Late Triassic (Norian, ~227–213 Ma) | Height: ~2.5 m
Length: ~6.6–10.0 m Mass: ~800–3,000 kg |
Formation: Los Colorados Formation, Argentina | "A heavy, rigid-backed quadruped from Argentina! Its chunky legs and solid bones show it stayed firmly on all fours while browsing high foliage." |
| Thecodontosaurus antiquus
(Holotype: BRSUG 26120) |
Late Triassic (Rhaetian, ~205 Ma) | Height: ~0.6 m
Length: ~2.0–2.5 m Mass: ~30–40 kg |
Formation: Magnesian Conglomerate, England | "Bristol's very own ancient lizard! One of the first dinosaurs ever named in British paleontology, browsing through island-like archipelago rocks." |
| Yunnanosaurus youngi
(Holotype: IVPP V20) |
Early Jurassic (Sinemurian–Pliensbachian, ~200–190 Ma) | Height: ~2.0 m
Length: ~6.0–7.0 m Mass: ~400–600 kg |
Formation: Lufeng Formation, China | "Its spoon-shaped teeth were uniquely specialized for snipping and grinding plant matter, making it one of the most successful herbivores of early Jurassic China." |
| Smurfette smurfensis
(Fictional Specimen: Village Mushroom Archive) |
Holocene to Prehistoric Crossover Era | Height: ~0.05 m
Length: ~0.05 m Mass: ~0.02 kg |
Formation: Smurf Village Botanical Layer, Belzat Forest | "Well, now I've seen everything! A three-apple-tall blue wanderer exploring the sauropod tracks. Let's just hope Gargamel's pet cat Azrael doesn't try to hunt this little mythologist!" |
Sauropoda Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Hip Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Alamosaurus sanjuanensis
(Holotype: USNM 15560) |
Late Cretaceous (Maastrichtian, ~69–66 Ma) | Height: ~12.0 m
Length: ~26.0–30.0 m Mass: ~30–73 metric tons |
Formation: Ojo Alamo Formation / Naashoibito Member, USA | "North America's last great sauropod! These colossal survivors walked right up to the end of the Cretaceous, dodging T. rex on the very edge of extinction." |
| Amargasaurus cazaui
(Holotype: MACN-RN 1001) |
Early Cretaceous (Barremian, ~129–122 Ma) | Height: ~2.5 m
Length: ~9.0–10.0 m Mass: ~2.6 metric tons |
Formation: La Amarga Formation, Argentina | "Look at those paired, needle-like neural spines streaming off its neck! They may have supported a double keratinous sail for visual display or defense." |
| Apatosaurus ajax
(Holotype: YPM 1980) |
Late Jurassic (Kimmeridgian–Tithonian, ~152 Ma) | Height: ~6.5 m
Length: ~21.0–27.0 m Mass: ~16–22 metric tons |
Formation: Morrison Formation, USA | "The classic whip-tailed gentle giant! Its tail could literally crack like a supersonic bullwhip to deter hungry allosaurids." |
| Barapasaurus tagorei
(Holotype: GSI IMC K27/694) |
Early Jurassic (Sinemurian–Pliensbachian, ~190–183 Ma) | Height: ~3.5 m
Length: ~14.0 m Mass: ~10–14 metric tons |
Formation: Kota Formation, India | "One of the earliest true sauropods! Named in honor of Rabindranath Tagore, this Indian pioneer shows how fast early long-necks scaled up in mass." |
| Brachiosaurus altithorax
(Holotype: FMNH P 25107) |
Late Jurassic (Kimmeridgian–Tithonian, ~154–153 Ma) | Height: ~9.0–14.0 m
Length: ~20.0–26.0 m Mass: ~28–56 metric tons |
Formation: Morrison Formation, USA / Kota Formation, India | "Built like a living giraffe-tower! With longer front legs than back legs, it browsed the highest conifer treetops that other herbivores couldn't even reach." |
| Camarasaurus supremus
(Holotype: AMNH 5761) |
Late Jurassic (Kimmeridgian–Tithonian, ~155–145 Ma) | Height: ~4.5 m
Length: ~15.0–18.0 m Mass: ~15–23 metric tons |
Formation: Morrison Formation, USA | "The most common sauropod in the Morrison quarry! Its blunt, box-like snout and spoon teeth were expert tools for chomping coarser Jurassic vegetation." |
| Cetiosaurus oxoniensis
(Lectotype: OUMNH J.13605) |
Middle Jurassic (Bathonian–Callovian, ~168–164 Ma) | Height: ~4.0 m
Length: ~15.0–16.0 m Mass: ~15–25 metric tons |
Formation: Chipping Norton Limestone / Rutland Formation, England | "The 'whale lizard'! One of the first dinosaurs ever scientifically described, giving 19th-century paleontologists their very first peek into England's prehistoric deep past." |
| Dicraeosaurus sattleri
(Holotype: MB.R.MB.R.4332) |
Late Jurassic (Kimmeridgian, ~150 Ma) | Height: ~3.0 m
Length: ~12.0–14.0 m Mass: ~4.0–5.0 metric tons |
Formation: Tendaguru Formation, Tanzania | "A short-necked, fork-spined African marvel! It traded extra neck length for a lightweight, highly maneuverable frame in the lush Tendaguru floodplains." |
| Diplodocus hallorum
(Holotype: WDC-DHS-1 / formerly Seismosaurus) |
Late Jurassic (Kimmeridgian–Tithonian, ~154–152 Ma) | Height: ~5.0 m
Length: ~32.0–35.0 m Mass: ~12–15 metric tons |
Formation: Morrison Formation, USA | "An astonishingly long creature! More than half its total length was just a slender, whip-like tail designed to keep Morrison predators at a very safe distance." |
| Dreadnoughtus schrani
(Holotype: MPM-PV 1156) |
Late Cretaceous (Campanian, ~77 Ma) | Height: ~16.0 m
Length: ~26.0 m Mass: ~22–59 metric tons |
Formation: Cerro Barcino Formation, Argentina | "Named after battleships because it 'fearing nothing'! With massive muscle scars etched into its bones, this titan was an absolute fortress on four legs." |
| Euhelopus zdanskyi
(Holotype: PM U 236) |
Early Cretaceous (Aptian–Albian, ~118–113 Ma) | Height: ~4.0 m
Length: ~15.0 m Mass: ~15–20 metric tons |
Formation: Mengyin Formation, China | "One of China's classic Cretaceous sauropods! Its elevated shoulders and uniquely curved skull made it a striking fixture of East Asian flood basins." |
| Mamenchisaurus sinocanadorum
(Holotype: IVPP V.9404) |
Late Jurassic (Oxfordian–Kimmeridgian, ~162–155 Ma) | Height: ~17.0 m
Length: ~26.0–35.0 m Mass: ~12–25 metric tons |
Formation: Shaximiao Formation, China | "Half its body length was pure neck! Holding the record for one of the longest necks in the animal kingdom, supported by an incredible web of pneumatic ribs." |
| Omeisaurus fuxiensis
(Holotype: IVPP V.4401) |
Middle to Late Jurassic (Bathonian–Oxfordian, ~165–155 Ma) | Height: ~4.5 m
Length: ~20.0 m Mass: ~9–15 metric tons |
Formation: Shaximiao Formation, China | "Named after Mount Omei, this magnificent Asian sauropod sported a long, whip-like tail and a robust ribcage designed for high-capacity plant digestion." |
| Opisthocoelicaudia skarzynskii
(Holotype: ZPAL MgD-I/48) |
Late Cretaceous (Maastrichtian, ~70 Ma) | Height: ~3.0 m
Length: ~11.4–12.0 m Mass: ~8.4–10 metric tons |
Formation: Nemegt Formation, Mongolia | "A heavy, tank-like titanosaur from the Nemegt basin that famously lacked a preserved skull. Its ball-and-socket tail vertebrae gave it incredible spinal flexibility!" |
| Patagotitan mayorum
(Holotype: MPEF-PV 3400) |
Late Cretaceous (Cenomanian, ~101 Ma) | Height: ~17.0 m
Length: ~37.0 m Mass: ~57–70 metric tons |
Formation: Cerro Barcino Formation, Argentina | "Titan of titans! Discovered in Argentine Patagonia, this colossus pushes the physical boundaries of how heavy a land animal could possibly grow." |
| Saltasaurus loricatus
(Holotype: PVL 4017-91) |
Late Cretaceous (Campanian–Maastrichtian, ~70–66 Ma) | Height: ~2.0 m
Length: ~12.0–12.8 m Mass: ~7.0 metric tons |
Formation: Lecho Formation, Argentina | "The armored sauropod! Who says giant long-necks couldn't defend themselves? It carried bony osteoderms embedded in its skin like a prehistoric tank." |
| Sauroposeidon proteles
(Holotype: OMNH 53062) |
Early Cretaceous (Aptian, ~110 Ma) | Height: ~18.0 m
Length: ~27.0–34.0 m Mass: ~40–60 metric tons |
Formation: Antlers Formation, USA | "The earthquake god lizard! Standing tall enough to look into a modern six-story building window, it was the absolute height of Early Cretaceous sauropod evolution." |
| Supersaurus vivianae
(Holotype: WDC DMNH 25992) |
Late Jurassic (Kimmeridgian–Tithonian, ~153 Ma) | Height: ~21.5 m
Length: ~33.0–45.0 m Mass: ~31–50 metric tons |
Formation: Morrison Formation, USA | "Super by name, super by nature! One of the longest dinosaurs ever recovered from the Morrison, stretching across landscapes with breathtaking scale." |
Ornithischia (Cerapoda & Ornithopoda) Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Hip Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Abrictosaurus consors
(Holotype: UCL BIV 50) |
Early Jurassic (Hettangian–Sinemurian, ~200–190 Ma) | Height: ~0.3 m
Length: ~1.2 m Mass: ~3 kg |
Formation: Upper Elliot Formation, Lesotho | "Look at those prominent canine-like tusks! Even though they were plant-eaters, these heterodontosaurids weren't afraid to flash some dental bling when defending themselves." |
| Echinodon becklesii
(Holotype: BMNH 48209) |
Early Cretaceous (Berriasian, ~145 Ma) | Height: ~0.2 m
Length: ~0.6 m Mass: ~1 kg |
Formation: Purbeck Group, England | "The 'spiny tooth'! A tiny, pocket-sized ornithischian from England with unique self-sharpening teeth that let it clip stubborn prehistoric plants with surgical precision." |
| Fabrosaurus australis
(Holotype: MNHN LES 1) |
Early Jurassic (Hettangian–Sinemurian, ~200 Ma) | Height: ~0.3 m
Length: ~1.0 m Mass: ~5 kg |
Formation: Upper Elliot Formation, Lesotho | "A foundational name in early ornithischian history! Though fragmentary, its leaf-shaped cheek teeth proved that nimble little browsers were already diversifying rapidly." |
| Geranosaurus atavus
(Holotype: SAM-PK-1871) |
Early Jurassic (Hettangian–Sinemurian, ~200 Ma) | Height: ~0.4 m
Length: ~1.2 m Mass: ~6 kg |
Formation: Upper Elliot Formation, South Africa | "The 'crane lizard'! Named for its slender, bird-like lower jaw structure, showing how early South African herbivores adapted for selective feeding." |
| Heterodontosaurus tucki
(Holotype: SAM-PK-3372) |
Early Jurassic (Hettangian–Sinemurian, ~200–190 Ma) | Height: ~0.5 m
Length: ~1.2 m Mass: ~2.5–5 kg |
Formation: Upper Elliot Formation, South Africa | "The weird-toothed wonder! Complete with chisel-like front teeth, chewing cheek teeth, and sharp canine tusks. It's like a prehistoric rodent crossed with a sabertooth!" |
| Lesothosaurus diagnosticus
(Holotype: BMNH R11956) |
Early Jurassic (Hettangian–Sinemurian, ~200–196 Ma) | Height: ~0.4 m
Length: ~1.0 m Mass: ~4–7 kg |
Formation: Upper Elliot Formation, Lesotho / South Africa | "Lightning-fast and blindingly agile! This basal ornithischian zipped across southern Africa's arid plains on long, slender hind legs." |
| Pisanosaurus mertii
(Holotype: PVL 2577) |
Late Triassic (Carnian–Norian, ~228–216 Ma) | Height: ~0.3 m
Length: ~1.0 m Mass: ~2.5 kg |
Formation: Ischigualasto Formation, Argentina | "One of the oldest known ornithischians of all! Marking the very dawn of the bird-hipped lineage in the sun-baked floodplains of Argentina." |
| Callovosaurus leedsi
(Holotype: BMNH R3165) |
Middle Jurassic (Callovian, ~165 Ma) | Height: ~0.8 m
Length: ~2.5 m Mass: ~50 kg |
Formation: Oxford Clay Formation, England | "An elusive Middle Jurassic iguanodontian! Known from fragmentary fossils tucked away in English marine clays, giving us a rare glimpse into pre-Morrison herbivores." |
| Camptosaurus dispar
(Holotype: YPM 1877) |
Late Jurassic (Kimmeridgian–Tithonian, ~156–145 Ma) | Height: ~1.0 m
Length: ~6.0–7.0 m Mass: ~780–800 kg |
Formation: Morrison Formation, USA | "The sturdy, flexible runner of the Morrison! It could graze comfortably on all fours or stand tall on its hind legs to reach mid-level canopy shrubs." |
| Dryosaurus elderae
(Holotype: YPM 1876) |
Late Jurassic (Kimmeridgian–Tithonian, ~155–145 Ma) | Height: ~1.2 m
Length: ~2.4–4.0 m Mass: ~70–100 kg |
Formation: Morrison Formation, USA | "Built like a gazelle! With huge eyes and an aerodynamic snout, it relied entirely on blistering speed to outrun allosaurs and ceratosaurs." |
| Fulgurotherium australe
(Holotype: BMNH R3717) |
Early Cretaceous (Aptian–Albian, ~112–100 Ma) | Height: ~0.5 m
Length: ~1.5 m Mass: ~15 kg |
Formation: Griman Creek Formation, Australia | "The 'lightning beast' from down under! A small, swift hypsilophodontid darting through the ancient polar forests of southeastern Australia." |
| Hippodraco scutodens
(Holotype: UMNH VP 20208) |
Early Cretaceous (Valanginian, ~132 Ma) | Height: ~1.2 m
Length: ~4.5 m Mass: ~300 kg |
Formation: Cedar Mountain Formation, USA | "The horse-dragon! Named for its elongated horse-like facial profile, representing a fascinating early basal iguanodontian stepping stone in North America." |
| Hypsilophodon foxii
(Holotype: BMNH R196) |
Early Cretaceous (Barremian, ~130–125 Ma) | Height: ~0.5 m
Length: ~1.5–2.0 m Mass: ~20 kg |
Formation: Wessex Formation, England | "The classic nimble biped! For a long time, scientists thought it climbed trees, but its specialized beak and rigid tail prove it was an absolute ground-sprinter." |
| Iguanodon bernissartensis
(Holotype: IRSNB 1536) |
Early Cretaceous (Barremian–Aptian, ~126–122 Ma) | Height: ~4.5 m
Length: ~9.0–11.2 m Mass: ~3.0–4.8 metric tons |
Formation: Bernissart Clay / Wealden Group, Belgium | "The famous spiked thumb! Discovered packed by the dozens in a Belgian coal mine. That conical thumb spike was a lethal close-quarters weapon against predators." |
| Loncosaurus argentinus
(Holotype: MACN A-52) |
Late Cretaceous (Coniacian–Campanian, ~85 Ma) | Height: ~0.7 m
Length: ~2.0 m Mass: ~30 kg |
Formation: Bajo Barreal Formation, Argentina | "A mysterious Patagonian ornithopod! Known from sparse skeletal fragments, showing just how widespread these small-to-mid-sized herbivores were in South America." |
| Muttaburrasaurus langdoni
(Holotype: QMF 61) |
Early Cretaceous (Albian, ~105–100 Ma) | Height: ~2.0 m
Length: ~7.0–8.0 m Mass: ~2.8 metric tons |
Formation: Allaru Mudstone / Mackunda Formation, Australia | "Look at that hollow, swollen nasal arch on its snout! It likely acted as a resonating chamber to broadcast deep, booming calls across the Australian river plains." |
| Nanosaurus agilis
(Holotype: YPM 1913) |
Late Jurassic (Kimmeridgian–Tithonian, ~155 Ma) | Height: ~0.3 m
Length: ~2.0 m Mass: ~10 kg |
Formation: Morrison Formation, USA | "The dainty lizard! Othniel Charles Marsh's tiny basal ornithischian that scurried around the feet of towering Morrison sauropods." |
| Ouranosaurus nigeriensis
(Holotype: MNHN GDF 300) |
Early Cretaceous (Aptian–Albian, ~125–112 Ma) | Height: ~2.7 m
Length: ~7.0–8.3 m Mass: ~2.2–4.0 metric tons |
Formation: Elrhaz Formation, Niger | "A majestic sail-backed iguanodontian from the Sahara! Unlike Spinosaurus, its neural spines formed a broad, muscular hump or display sail across its back." |
| Parksosaurus warreni
(Holotype: ROM 804) |
Late Cretaceous (Maastrichtian, ~70–66 Ma) | Height: ~0.6 m
Length: ~2.5 m Mass: ~45 kg |
Formation: Horseshoe Canyon Formation, Canada | "Named after pioneering Canadian paleontologist William Parks! A sleek, big-eyed hypsilophodontid ducking through the closing chapters of the Cretaceous." |
| Probactrosaurus gobiensis
(Holotype: PIN 2232-1) |
Early Cretaceous (Albian–Cenomanian, ~105–95 Ma) | Height: ~1.8 m
Length: ~6.0 m Mass: ~1.0 metric ton |
Formation: Dzunbayan / Khukhtek Formation, Mongolia / China | "The evolutionary bridge to the giant duck-bills! Its advanced dental batteries and snout structure previewed the massive hadrosaur take-over." |
| Tenontosaurus dossi
(Holotype: SMU 68462) |
Early Cretaceous (Aptian–Albian, ~115–105 Ma) | Height: ~1.5 m
Length: ~6.0–7.0 m Mass: ~1.0 metric ton |
Formation: Antlers / Twin Mountains Formation, USA | "The ultimate prey package! Famous for fossil sites where multiple Deinonychus skeletons surround a single Tenontosaurus, showing complex predator-prey dynamics." |
| Thescelosaurus garbanii
(Holotype: LACM 23845) |
Late Cretaceous (Maastrichtian, ~66 Ma) | Height: ~1.0 m
Length: ~3.5–4.0 m Mass: ~200–300 kg |
Formation: Hell Creek Formation, USA | "The wonderful pebble-toothed herbivore! Some specimens even preserve fossilized skin and internal body armor rings, making it one of the best-understood last-minute survivors." |
| Valdosaurus canaliculatus
(Holotype: BMNH R187) |
Early Cretaceous (Valanginian–Barremian, ~140–125 Ma) | Height: ~0.6 m
Length: ~2.0 m Mass: ~30 kg |
Formation: Wessex Formation / Wealden Group, England | "Named after the Isle of Wight's ancient Valdean rocks! A fast-moving, slender dryosaurid skipping through European swamp forests." |
| Zephyrosaurus schaffi
(Holotype: MCZ 4392) |
Early Cretaceous (Aptian–Albian, ~115–110 Ma) | Height: ~0.5 m
Length: ~1.8 m Mass: ~20 kg |
Formation: Cloverly Formation, USA | "The western wind lizard! Sporting a remarkably rugged skull with distinct muscle bumps, suggesting it engaged in head-butting or species display rituals." |
Hadrosauridae Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Hip Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Brachylophosaurus canadensis
(Holotype: ROM 867) |
Late Cretaceous (Campanian, ~76.5 Ma) | Height: ~2.5 m
Length: ~7.0–9.0 m Mass: ~3.0–4.0 metric tons |
Formation: Oldman / Judith River Formation, Canada / USA | "Look at that flat, bony paddle on top of its skull! It looks almost like a medieval helmet. Nicknamed 'Leonardo' because of incredible mummified fossil preservation with skin intact!" |
| Corythosaurus casuarius
(Holotype: AMNH 5240) |
Late Cretaceous (Campanian, ~77–75 Ma) | Height: ~2.8 m
Length: ~9.0 m Mass: ~3.0–4.0 metric tons |
Formation: Dinosaur Park Formation, Canada / Lance Formation, USA | "The helmet lizard! That hollow, semi-circular crest housed looping nasal passages that could trumpet haunting, resonant honks across the Cretaceous river valleys." |
| Edmontosaurus regalis
(Holotype: NMC 2288) |
Late Cretaceous (Maastrichtian, ~73–66 Ma) | Height: ~3.0 m
Length: ~12.0–13.0 m Mass: ~4.0–9.0 metric tons |
Formation: Horseshoe Canyon Formation, Canada / Lance Formation, USA | "One of the ultimate mega-herbivores of the late Cretaceous! Some mummified 'dinosaur mummy' specimens even preserve soft tissue duck-bills and fleshy head combs." |
| Hypacrosaurus stebingeri
(Holotype: MOR 549) |
Late Cretaceous (Campanian–Maastrichtian, ~75–67 Ma) | Height: ~3.0 m
Length: ~9.1–10.7 m Mass: ~4.0 metric tons |
Formation: Two Medicine Formation, USA / Dinosaur Park Formation, Canada | "The 'highest near lizard'! Fossil nesting grounds with eggs and tiny embryos show these massive social mothers lovingly cared for their hatchlings in sprawling colonies." |
| Kritosaurus navajovius
(Holotype: AMNH 5799) |
Late Cretaceous (Campanian, ~73 Ma) | Height: ~2.5 m
Length: ~8.0–9.0 m Mass: ~3.0 metric tons |
Formation: Kirtland Formation, USA | "The classic 'chosen lizard' of the American Southwest! Featuring a distinctive, slightly arched nasal hump that gave it a uniquely proud facial profile." |
| Lambeosaurus magnicristatus
(Holotype: NMC 8705) |
Late Cretaceous (Campanian, ~75 Ma) | Height: ~3.0 m
Length: ~9.0–15.0 m Mass: ~3.5–5.8 metric tons |
Formation: Dinosaur Park Formation, Canada | "That magnificent, axe-like hollow crest towering over its head is an engineering marvel! A true acoustic masterpiece of the Canadian badlands." |
| Maiasaura peeblesorum
(Holotype: PU 22405) |
Late Cretaceous (Campanian, ~76.7 Ma) | Height: ~2.5 m
Length: ~7.0–9.0 m Mass: ~2.0–3.0 metric tons |
Formation: Two Medicine Formation, USA | "The 'good mother lizard'! Discovering 'Egg Mountain' revolutionized paleontology by proving dinosaurs fed and raised their babies in communal nesting grounds like modern birds." |
| Olorotitan arharensis
(Holotype: AEHM 2/845) |
Late Cretaceous (Maastrichtian, ~72–66 Ma) | Height: ~3.1 m
Length: ~8.0–12.0 m Mass: ~3.5–4.5 metric tons |
Formation: Yuliangze Formation, Russia / China | "The giant swan of Asia! Its hollow crest was shaped like a broad, sweeping axe or fan, making it one of the most elegant and distinct lambeosaurines ever found." |
| Parasaurolophus walkeri
(Holotype: ROM 768) |
Late Cretaceous (Campanian, ~76–73 Ma) | Height: ~2.5 m
Length: ~9.5–10.0 m Mass: ~2.5–3.5 metric tons |
Formation: Dinosaur Park Formation, Canada | "The trombone of the Cretaceous! That iconic six-foot-long back-swept tube allowed it to broadcast low-frequency foghorn calls across dense swamps." |
| Saurolophus osborni
(Holotype: AMNH 5220) |
Late Cretaceous (Maastrichtian, ~70–66 Ma) | Height: ~3.0 m
Length: ~9.0–12.0 m Mass: ~3.0–4.2 metric tons |
Formation: Edmonton Group / Nemegt Formation, Canada / Mongolia | "Spiked lizard! Sporting a solid, backward-pointing bony spike on its head rather than a hollow tube. A trans-continental survivor bridging North America and Asia!" |
| Shantungosaurus giganteus
(Holotype: GMV H V1853) |
Late Cretaceous (Campanian–Maastrichtian, ~73–66 Ma) | Height: ~5.0–6.0 m
Length: ~14.7–16.6 m Mass: ~13.0–16.0 metric tons |
Formation: Wangshi Group, China | "The absolute heavyweight champion of the duck-bills! Growing as large as a small sauropod, proving that non-sauropod herbivores could reach colossal proportions." |
| Tsintaosaurus spinorhinus
(Holotype: IVPP V725) |
Late Cretaceous (Campanian–Maastrichtian, ~72–66 Ma) | Height: ~2.5 m
Length: ~8.0–10.0 m Mass: ~2.5–3.0 metric tons |
Formation: Wangshi Group, China | "The famous 'unicorn' duck-bill! Though early reconstructions mistakenly stuck a single vertical tube right on its nose like a unicorn horn, its crest is actually a forward-projecting ridge." |
Pachycephalosauria Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Hip Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Dracorex hogwartsia
(Holotype: TCM 2004.1.1) |
Late Cretaceous (Maastrichtian, ~66 Ma) | Height: ~1.2 m
Length: ~2.4–3.0 m Mass: ~50–75 kg |
Formation: Hell Creek Formation, USA | "Named after Hogwarts because its flat, spiked skull looks straight out of Harry Potter! Though some paleontologists think it's just a juvenile Pachycephalosaurus, those dragon horns are pure fantasy come to life." |
| Goyocephale lattimorei
(Holotype: GI SPS 100/1501) |
Late Cretaceous (Campanian, ~75 Ma) | Height: ~0.6 m
Length: ~1.8 m Mass: ~40 kg |
Formation: Barun Goyot Formation, Mongolia | "A sleek Mongolian dome-head with a flat, wedge-shaped skull roof and fenestrae! It shows how early pachycephalosaurs experimented with skull ornamentation." |
| Homalocephale calathocercos
(Holotype: GI SPS 100/1201) |
Late Cretaceous (Campanian, ~75 Ma) | Height: ~0.6 m
Length: ~1.8–3.0 m Mass: ~40–45 kg |
Formation: Barun Goyot Formation, Mongolia | "The 'even head'! Featuring a flat, heavily ossified skull table and an unusually wide, basket-like pelvis that hints it might have given birth to live young or large clutches." |
| Micropachycephalosaurus hongtuyanensis
(Holotype: IVPP V4688) |
Late Cretaceous (Campanian, ~83–70 Ma) | Height: ~0.3 m
Length: ~1.0 m Mass: ~5 kg |
Formation: Wangshi Group, China | "Winner of the longest dinosaur name award! Despite its grandiose title, it's known from very fragmentary remains, but it represents the tiny, twig-walking ancestors of the clade." |
| Pachycephalosaurus wyomingensis
(Holotype: USNM 12031) |
Late Cretaceous (Maastrichtian, ~68–66 Ma) | Height: ~2.0 m
Length: ~4.5–4.5 m Mass: ~300–450 kg |
Formation: Hell Creek / Lance Formation, USA | "The thick-headed king of the Cretaceous! With a solid bone dome ten inches thick on top of its skull, it likely engaged in dramatic flank-butting or head-shoving duels for dominance." |
| Prenocephale prenes
(Holotype: GI SPS 100/1001) |
Late Cretaceous (Campanian–Maastrichtian, ~70 Ma) | Height: ~0.8 m
Length: ~2.4 m Mass: ~60 kg |
Formation: Nemegt Formation, Mongolia | "Slender and smart, with a dome-shaped head optimized for high-speed visual displays and social sparring across the Asian floodplains." |
| Stegoceras validum
(Holotype: UALVP 2) |
Late Cretaceous (Campanian, ~75–74 Ma) | Height: ~0.7 m
Length: ~2.0–2.5 m Mass: ~40–50 kg |
Formation: Dinosaur Park Formation, Canada | "The classic Canadian dome-head! Its pear-shaped skull and serrated cheek teeth show it was browsing on tender fruits, seeds, and foliage." |
| Stygimoloch spinifer
(Holotype: UCMP 119684) |
Late Cretaceous (Maastrichtian, ~66 Ma) | Height: ~1.5 m
Length: ~3.0 m Mass: ~80–100 kg |
Formation: Hell Creek Formation, USA | "Demon from the river Styx! Those long, intimidating horns ringing its domed skull made it look like a heavy-metal album cover brought to life." |
| Wannanosaurus yansiensis
(Holotype: IVPP V4731) |
Late Cretaceous (Campanian, ~80 Ma) | Height: ~0.3 m
Length: ~0.6–1.0 m Mass: ~2–3 kg |
Formation: Xiaoyan Formation, China | "One of the oldest and smallest known pachycephalosaurs from southern China, giving us clues into how these miniaturized dome-heads first evolved." |
Ceratopsia Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Hip Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Auroraceratops rugosus
(Holotype: Z LPM 1-0001) |
Early Cretaceous (Aptian–Albian, ~125–100 Ma) | Height: ~0.4 m
Length: ~1.25–2.0 m Mass: ~15–30 kg |
Formation: Xiagou Formation, China | "Named after the dawn and the Roman goddess Aurora! Its deeply textured, rugged snout bones show that early basal ceratopsians were already using facial displays." |
| Bagaceratops rozhdestvenskyi
(Holotype: ZPAL MgD-II/1) |
Late Cretaceous (Campanian–Maastrichtian, ~80–70 Ma) | Height: ~0.3 m
Length: ~1.0 m Mass: ~22 kg |
Formation: Djadokhta Formation, Mongolia | "A small, smooth-skulled desert dweller from the Gobi! It represents a charming little branch of the horned-dinosaur family tree before mega-frills took over." |
| Centrosaurus apertus
(Holotype: NMC 971) |
Late Cretaceous (Campanian, ~76.5–75.5 Ma) | Height: ~1.8 m
Length: ~6.0 m Mass: ~2.3 metric tons |
Formation: Dinosaur Park Formation, Canada | "That massive, forward-curving nose horn and the wicked, hook-like spikes radiating from its frill made it look like a walking crown of thorns!" |
| Chasmosaurus belli
(Holotype: NMC 491) |
Late Cretaceous (Campanian, ~76–75 Ma) | Height: ~2.0 m
Length: ~4.8–5.0 m Mass: ~1.5–2.0 metric tons |
Formation: Dinosaur Park Formation, Canada | "The wide-frilled beauty! Its elongated, heart-shaped frill was packed with large window-like openings, likely used for species recognition and sun-basking rather than defense." |
| Leptoceratops gracilis
(Holotype: NMC 8887) |
Late Cretaceous (Maastrichtian, ~68–66 Ma) | Height: ~0.6 m
Length: ~2.0 m Mass: ~68–90 kg |
Formation: Edmonton Group / Scollard Formation, Canada | "A slender, toothless-beaked primitive ceratopsian that managed to stick around right until the very end of the Cretaceous period." |
| Lokiceratops rangiformis
(Holotype: MSM P43231) |
Late Cretaceous (Campanian, ~78 Ma) | Height: ~2.2 m
Length: ~6.7 m Mass: ~5.0 metric tons |
Formation: Judith River Formation, USA | "Named after the Norse god Loki! Featuring the most wildly asymmetric, blade-like horns and frill ornaments ever discovered on a horned dinosaur." |
| Microceratus gobiensis
(Holotype: PIN 3146/1) |
Late Cretaceous (Santonian–Campanian, ~85–75 Ma) | Height: ~0.2 m
Length: ~0.6 m Mass: ~1–2 kg |
Formation: Djadokhta Formation, Mongolia | "'Small horned face'! A tiny, agile herbivore scurrying through the prehistoric Gobi dunes like a scaled rabbit." |
| Montanoceratops cerorhynchus
(Holotype: AMNH 5462) |
Late Cretaceous (Campanian, ~70 Ma) | Height: ~0.8 m
Length: ~2.5 m Mass: ~90–170 kg |
Formation: St. Mary River Formation, USA | "Montana's very own horned oddity! Sporting a distinct, beak-like snout and a tiny nasal horn that hinted at the massive weaponry to come." |
| Nasutoceratops titusi
(Holotype: UMNH VP 16800) |
Late Cretaceous (Campanian, ~75 Ma) | Height: ~1.8 m
Length: ~4.5–5.0 m Mass: ~1.5 metric tons |
Formation: Kaiparowits Formation, USA | "Big-nosed horned face! Those insanely long, curved brow horns look straight out of a Texas longhorn steer, sweeping sideways to intimidate rivals." |
| Pachyrhinosaurus lakustai
(Holotype: TMP 89.132.1) |
Late Cretaceous (Campanian–Maastrichtian, ~73.5 Ma) | Height: ~2.0 m
Length: ~6.0–8.0 m Mass: ~3.0–4.0 metric tons |
Formation: Wapiti / Frenchman Formation, Canada / Hell Creek Formation, USA | "Instead of a sharp horn on its nose, it grew a massive, bumpy bone boss! Perfect for head-to-head shoving matches in the ancient Arctic mists." |
| Pentaceratops sternbergii
(Holotype: AMNH 1625) |
Late Cretaceous (Campanian, ~75–73 Ma) | Height: ~2.5 m
Length: ~6.0–8.0 m Mass: ~2.5–5.0 metric tons |
Formation: Kirtland Formation, USA | "Five-horned face! Well, technically two brow horns, two cheek horns, and a nose horn. It rocked one of the largest skull frills of any land animal in history." |
| Protoceratops hellenikorhinus
(Holotype: IMM 95BM1) |
Late Cretaceous (Campanian, ~75–71 Ma) | Height: ~0.6 m
Length: ~1.8–2.0 m Mass: ~80–180 kg |
Formation: Bayan Mandahu Formation, China | "The quintessential Gobi desert fossil! Famous for being found in pristine nesting grounds, cementing its legacy as a doting parent of the Cretaceous." |
| Psittacosaurus meileyingensis
(Holotype: IVPP V 7389) |
Early Cretaceous (Aptian, ~120–110 Ma) | Height: ~0.4 m
Length: ~1.0–2.0 m Mass: ~10–20 kg |
Formation: Ejinhoro Formation, China | "Parrot lizard! Complete with a high-curved beak, quill-like bristles on its tail, and gastroliths in its stomach to grind down tough ferns." |
| Sinoceratops zhuchengensis
(Holotype: ZCDM V0010) |
Late Cretaceous (Campanian, ~73 Ma) | Height: ~2.5 m
Length: ~6.0–7.0 m Mass: ~2.0 metric tons |
Formation: Wangshi Group, China | "China's magnificent centrosaurine! The only known horned dinosaur of its specific branch found outside of North America, sporting a gorgeous array of forward-curving frill hooks." |
| Styracosaurus ovatus
(Holotype: USNM 11869) |
Late Cretaceous (Campanian, ~75 Ma) | Height: ~1.8 m
Length: ~5.0–5.5 m Mass: ~2.7 metric tons |
Formation: Two Medicine Formation, USA | "A brilliant cousin to the classic Canadian Styracosaurus, marching across the southern ranges of the North American inland sea with a bristling halo of spikes." |
| Torosaurus latus
(Holotype: YPM 1830) |
Late Cretaceous (Maastrichtian, ~68–66 Ma) | Height: ~2.4 m
Length: ~7.6–9.0 m Mass: ~4.0–6.0 metric tons |
Formation: Hell Creek / Lance Formation, USA / Frenchman Formation, Canada | "Bull lizard! Boasting the largest skull of any known land vertebrate ever—its frill alone could span over eight feet long!" |
| Triceratops horridus
(Holotype: USNM 4842) |
Late Cretaceous (Maastrichtian, ~68–66 Ma) | Height: ~2.9–3.0 m
Length: ~8.0–9.0 m Mass: ~6.0–12.0 metric tons |
Formation: Hell Creek / Lance Formation, USA | "The ultimate three-horned face! With a battery of hundreds of self-sharpening teeth and triple-spear headgear, it stood its ground against T. rex until the very end." |
Stegosauria Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Hip Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Chungkingosaurus jiangbeiensis
(Holotype: CV 0072) |
Late Jurassic (Oxfordian–Kimonian, ~160–155 Ma) | Height: ~1.2 m
Length: ~3.0–4.0 m Mass: ~400–800 kg |
Formation: Shaximiao Formation, China | "A smaller, feisty Chinese stegosaur! Packing an unusually large array of paired tail spikes known as a thagomizer, perfect for close-quarters self-defense." |
| Dacentrurus armatus
(Holotype: BMNH R4601) |
Late Jurassic (Kimmeridgian–Tithonian, ~154–150 Ma) | Height: ~2.0 m
Length: ~7.0–8.0 m Mass: ~5.0 metric tons |
Formation: Kimmeridge Clay Formation, England | "Europe's heavy armor! Instead of towering upright plates, it sported enormous, menacing spikes running all along its back and tail like a walking medieval fortress." |
| Gigantspinosaurus sichuanensis
(Holotype: ZDM 0018) |
Late Jurassic (Oxfordian, ~160 Ma) | Height: ~1.4 m
Length: ~4.2 m Mass: ~700 kg |
Formation: Shaximiao Formation, China | "Look at those ridiculously enlarged, wing-like shoulder spines! They stuck straight out from its scapulae, making it one of the most uniquely spiky dinosaurs in Sichuan." |
| Huayangosaurus taibaii
(Holotype: IVPP V.6728) |
Middle Jurassic (Bathonian–Callovian, ~165 Ma) | Height: ~1.0 m
Length: ~4.5 m Mass: ~300–500 kg |
Formation: Shaximiao Formation, China | "A foundational primitive stegosaur! It even retained premaxillary teeth in its upper jaw—something its later, more specialized cousins completely lost over time." |
| Kentrosaurus aethiopicus
(Holotype: MB.R.1930) |
Late Jurassic (Kimmeridgian, ~152 Ma) | Height: ~1.5 m
Length: ~4.5–5.0 m Mass: ~1.0–1.5 metric tons |
Formation: Tendaguru Formation, Tanzania | "The African spiked slider! With flat plates across its neck and long, dagger-like spikes trailing all the way down its tail and hips. A true architectural marvel of Tanzania." |
| Stegosaurus stenops
(Holotype: USNM 4934) |
Late Jurassic (Kimmeridgian–Tithonian, ~155–150 Ma) | Height: ~5.75 m
Length: ~8.5–10.5 m Mass: ~2.6–4.7 metric tons |
Formation: Morrison Formation, USA | "The ultimate roofed lizard! Those alternating double rows of bony plates on its back acted as thermal radiators and dazzling display structures against hungry Morrison allosaurs." |
| Tuojiangosaurus multispinus
(Holotype: CV V205) |
Late Jurassic (Oxfordian–Kimmeridgian, ~155 Ma) | Height: ~2.0 m
Length: ~6.5–7.0 m Mass: ~1.5–2.0 metric tons |
Formation: Shaximiao Formation, China | "Asia's classic multi-spined stegosaur! Featuring narrow, pear-shaped back plates and a powerful tail thagomizer that kept local carnivores guessing." |
Ankylosauria Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Hip Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Ankylosaurus magniventris
(Holotype: AMNH 5895) |
Late Cretaceous (Maastrichtian, ~68–66 Ma) | Height: ~3.7 m
Length: ~6.25–11.0 m Mass: ~4.8–8.0 metric tons |
Formation: Hell Creek / Lance Formation, USA / Scollard Formation, Canada | "The fused lizard with the great belly! Packing a massive bony club on its tail that could shatter a T. rex's shin bone with a single swing. The ultimate tank of the Cretaceous!" |
| Euoplocephalus tutus
(Holotype: NMC 0210) |
Late Cretaceous (Campanian, ~76.5–67 Ma) | Height: ~1.5 m
Length: ~6.0–7.0 m Mass: ~2.0–2.5 metric tons |
Formation: Dinosaur Park Formation, Canada | "Well-armored and completely protected! Even its eyelids were covered in bony armor plates. When predators closed in, it dropped flat and became an unbiteable boulder." |
| Minmi paravertebra
(Holotype: QM F10329) |
Early Cretaceous (Aptian–Albian, ~120–110 Ma) | Height: ~0.4 m
Length: ~2.0–3.0 m Mass: ~300 kg |
Formation: Bungil Formation, Australia | "Australia's adorable little armored road-roller! Featuring horizontal bony rods along its spine that gave it unique spinal rigidity against local predators." |
| Nodosaurus textilis
(Holotype: YPM 1815) |
Early Cretaceous (Albian, ~105–100 Ma) | Height: ~1.2 m
Length: ~5.5–6.0 m Mass: ~1.5–3.0 metric tons |
Formation: Dakota / Mowry Shale Formation, USA | "The classic knot-lizard! Lacking a tail club, it relied instead on dense rows of interlocking osteoderms and menacing shoulder spikes for formidable defense." |
| Pinacosaurus grangeri
(Holotype: AMNH 6523) |
Late Cretaceous (Campanian, ~80–75 Ma) | Height: ~1.0 m
Length: ~4.5–5.0 m Mass: ~1.0–1.9 metric tons |
Formation: Djadokhta Formation, Mongolia / China | "Plank lizard of the Gobi! Famous for fossilized juvenile bonebeds that suggest these armored youngsters huddled together during desert dust storms." |
| Polacanthus foxii
(Holotype: BMNH R175) |
Early Cretaceous (Barremian, ~130–125 Ma) | Height: ~1.0 m
Length: ~4.0–5.0 m Mass: ~1.0–2.0 metric tons |
Formation: Wessex Formation, England | "A stunning British nodosaurid! Sporting a massive, heavy sacral shield over its hips and curved lateral spikes that made it a prickly hazard for European predators." |
| Sauropelta edwardsorum
(Holotype: AMNH 3032) |
Early Cretaceous (Aptian–Albian, ~115–110 Ma) | Height: ~1.5 m
Length: ~5.0–7.6 m Mass: ~1.5–2.0 metric tons |
Formation: Cloverly Formation, USA | "Look at those colossal, curved neck spikes sticking out like horns! This early North American nodosaurid was built to withstand the sharpest teeth of the Early Cretaceous." |
| Scelidosaurus harrisonii
(Holotype: BMNH R1111) |
Early Jurassic (Sinemurian, ~193 Ma) | Height: ~1.0 m
Length: ~4.0 m Mass: ~250–450 kg |
Formation: Charmouth Mudstone Formation, England | "The limb-lizard pioneer! One of the earliest and most complete armored dinosaurs ever discovered, bridging the gap between primitive ornithischians and full thyreophorans." |
| Scutellosaurus lawleri
(Holotype: MNA V175) |
Early Jurassic (Hettangian, ~196 Ma) | Height: ~0.3 m
Length: ~1.2 m Mass: ~3–10 kg |
Formation: Kayenta Formation, USA | "Little shield lizard! A tiny, long-tailed bipedal precursor covered in hundreds of small osteoderms, showing how armoring started on a miniature scale." |
| Talarurus plicatospineus
(Holotype: PIN 3780-1) |
Late Cretaceous (Coniacian–Santonian, ~89–83 Ma) | Height: ~1.2 m
Length: ~5.0–6.0 m Mass: ~1.5 metric tons |
Formation: Bayan Shireh Formation, Mongolia | "Basket-tail! Named for its complex woven network of bony tail reinforcement plates and a sturdy terminal club for swinging at unruly predators." |
Pterosauria Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Wingspan / Hip Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Anurognathus ammoni
(Holotype: BSP 1922 I 42) |
Late Jurassic (Tithonian, ~150 Ma) | Wingspan: ~0.35 m
Length: ~0.09 m Mass: ~20–40 g |
Formation: Solnhofen Limestone, Germany | "The tiny, frog-mouthed aerial hunter! With a short skull and wide gape, it swooped through Jurassic forests snapping up insects like a prehistoric bat." |
| Dimorphodon macronyx
(Holotype: BMNH R1034) |
Early Jurassic (Sinemurian, ~195–190 Ma) | Wingspan: ~1.4 m
Length: ~1.0 m Mass: ~1.5–2.0 kg |
Formation: Blue Lias / Lower Lias, England | "Two forms of teeth! Featuring a massive, deep skull and a long, stiffened tail balanced with a terminal vane like an arrow feather." |
| Eudimorphodon ranzii
(Holotype: MCSN 1770) |
Late Triassic (Norian, ~215 Ma) | Wingspan: ~1.0 m
Length: ~0.65 m Mass: ~150 g |
Formation: Zorzino Limestone, Italy | "One of the oldest and most tooth-packed pterosaurs known! Those multi-cusped teeth were wicked little fish-traps over ancient Alpine lagoons." |
| Rhamphorhynchus etchesi (or R. muensteri)
(Specimen: BMNH 37002) |
Late Jurassic (Kimmeridgian–Tithonian, ~150 Ma) | Wingspan: ~1.0–1.8 m
Length: ~1.26 m Mass: ~400–800 g |
Formation: Solnhofen Limestone, Germany | "The quintessential long-tailed flyer! That stiff rudder at the end of its tail kept it perfectly balanced during high-speed banking turns over Jurassic archipelagos." |
| Scaphognathus crassirostris
(Holotype: BSP AS VII 648) |
Late Jurassic (Kimmeridgian–Tithonian, ~150 Ma) | Wingspan: ~0.9 m
Length: ~0.6 m Mass: ~300 g |
Formation: Solnhofen Limestone, Germany | "Thick-jawed snout! Its blunt, rounded skull profile gave it a very different bite compared to its needle-toothed Rhamphorhynchoid cousins." |
| Arthurdactylus conandoylei
(Holotype: CPV 296) |
Early Cretaceous (Aptian, ~115 Ma) | Wingspan: ~4.6 m
Length: ~2.1 m Mass: ~10 kg |
Formation: Romualdo Formation, Brazil | "Named after Sir Arthur Conan Doyle and his Lost World! A gorgeous Brazilian ornithocheiroid with massive wing bones sweeping across the skies." |
| Caiuajara dobruskii
(Holotype: CP-V 1001) |
Late Cretaceous (Cenomanian–Turonian, ~90 Ma) | Wingspan: ~0.65–2.35 m
Length: ~1.0 m Mass: ~2.0 kg |
Formation: Goioerê Formation, Brazil | "Discovered in a massive fossil bonebed containing dozens of individuals! Proving that these tapejarids lived, nested, and flew in large, social colonial flocks." |
| Cearadactylus atrox
(Holotype: MN 5004-V) |
Early Cretaceous (Aptian, ~112 Ma) | Wingspan: ~4.0 m
Length: ~1.5 m Mass: ~6.0 kg |
Formation: Romualdo Formation, Brazil | "Fierce jaws from Ceará! Its interlocking, rosette-tipped teeth were custom-built to grip slippery fish swimming through tropical Cretaceous seas." |
| Ctenochasma elegans
(Holotype: BSP AS I 1045) |
Late Jurassic (Tithonian, ~150 Ma) | Wingspan: ~0.25–0.4 m
Length: ~0.3 m Mass: ~40 g |
Formation: Solnhofen Limestone, Germany | "The comb-jawed filter feeder! Lined with hundreds of hair-thin, needle-like teeth that strained tiny crustaceans out of shallow Jurassic waters like a living sieve." |
| Dsungaripterus weii
(Holotype: IVPP V.277) |
Early Cretaceous (Valanginian–Aptian, ~130–112 Ma) | Wingspan: ~3.0–3.5 m
Length: ~1.9 m Mass: ~9.0–13 kg |
Formation: Tugulu Group, China | "An armored-skulled shell-cracker! With a low, bony crest and flat, peg-like back teeth designed for crushing hard-shelled clams and crabs along inland lake basins." |
| Ornithocheirus simus
(Holotype: NHMUK 35412) |
Early Cretaceous (Albian, ~110 Ma) | Wingspan: ~5.0 m
Length: ~2.0 m Mass: ~15 kg |
Formation: Cambridge Greensand, England | "The bird-hand of England! Famous for its distinctive, keel-like expansion on the tip of its upper snout used to slice through water spray during low-altitude fishing." |
| Pteranodon sternbergi
(Holotype: FHSM VP 403) |
Late Cretaceous (Coniacian–Santonian, ~85 Ma) | Wingspan: ~4.0–7.2 m
Length: ~1.8 m Mass: ~20–30 kg |
Formation: Niobrara Formation, USA | "The iconic soaring glider of the Western Interior Seaway! That sweeping upright crest served as an aerodynamic rudder while cruising over prehistoric waves." |
| Pterodaustro guinazui
(Holotype: PVL 2571) |
Early Cretaceous (Albian, ~105 Ma) | Wingspan: ~2.5 m
Length: ~1.0 m Mass: ~2.0–3.0 kg |
Formation: La Amarga / Lagarcito Formation, Argentina | "Look at those upward-curving bristle teeth on its lower jaw! It skimmed the water like a giant prehistoric flamingo, filtering microscopic organisms." |
| Quetzalcoatlus lawsoni
(Holotype: TMM 41961-1) |
Late Cretaceous (Maastrichtian, ~68–66 Ma) | Wingspan: ~5.0–25.5 m
Length: ~3.0–14.0 m Mass: ~65–850,000 kg |
Formation: Javelina Formation, USA | "The smaller cousin of the giant apex sky-lord! Even at 83 feet across, it stalked Cretaceous floodplains on stilt-like legs hunting small prey like a giant stork." |
| Tapejara wellnhoferi
(Holotype: BSP 1993 I 3) |
Early Cretaceous (Aptian, ~115–110 Ma) | Wingspan: ~1.5–2.5 m
Length: ~0.8 m Mass: ~3.0 kg |
Formation: Romualdo Formation, Brazil | "The parrot-beaked navigator! Sporting a massive, semi-circular bony and soft-tissue sagittal crest that made its head look remarkably like an exotic tropical bird." |
| Tropeognathus mesembrinus
(Holotype: BSP 1987 I 47) |
Early Cretaceous (Aptian, ~112 Ma) | Wingspan: ~8.2 m
Length: ~3.0 m Mass: ~35–50 kg |
Formation: Romualdo Formation, Brazil | "Keel-jawed titan of the southern seas! With massive semi-circular crests on the top and bottom of its snout to minimize hydrodynamic drag while dipping for fish." |
Marine Reptiles & Prehistoric Megafauna Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Flippers / Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Mesosaurus tenuidens
(Holotype: MNHN 1900-1) |
Early Permian (Artinskian, ~290–275 Ma) | Height / Width: ~0.1 m
Length: ~1.0 m Mass: ~3–5 kg |
Formation: Irati Formation, Brazil / Whitehill Formation, South Africa | "A tiny, slender pioneer of the aquatic realm! Its long, needle-filled snout acted like a fine-toothed comb to strain tiny swimming crustaceans in inland Permian lakes." |
| Nothosaurus giganteus
(Holotype: SMNS 5932) |
Middle Triassic (Anisian–Ladinian, ~240–230 Ma) | Height / Width: ~0.8 m
Length: ~4.0–5.2 m Mass: ~200–500 kg |
Formation: Muschelkalk, Germany / Grenzbitumen Zone, Switzerland | "The ultimate semi-aquatic ambush predator! With webbed feet and interlocking needle teeth, it hunted like a prehistoric seal along the margins of the Tethys Sea." |
| Eurhinosaurus huenei
(Holotype: GPIM 1324) |
Early Jurassic (Toarcian, ~182–175 Ma) | Height / Width: ~1.5 m
Length: ~6.0–7.0 m Mass: ~1.0 metric ton |
Formation: Posidonia Shale, Germany | "Look at that bizarre, exaggerated upper bill! It was twice as long as the lower jaw and lined with teeth, used to slash through schools of ancient squid and fish." |
| Ichthyosaurus conybeari
(Holotype: BMNH 2149) |
Early Jurassic (Sinemurian–Pliensbachian, ~199–189 Ma) | Height / Width: ~1.0 m
Length: ~2.0 m Mass: ~90–100 kg |
Formation: Blue Lias Formation, England | "The classic 'fish lizard'! Streamlined like a dolphin with giant, dinner-plate eyes that peered into the dark, murky depths of the Early Jurassic seas." |
| Ophthalmosaurus icenicus
(Holotype: CAMSM J35160) |
Late Jurassic (Kimmeridgian–Tithonian, ~165–150 Ma) | Height / Width: ~1.2 m
Length: ~4.0–6.0 m Mass: ~900–1,000 kg |
Formation: Oxford Clay / Kimmeridge Clay, England | "Eye lizard supreme! Those massive, scleral-ringed eyes were larger than dinner plates, built for deep-diving hunts in total darkness after squids and cephalopods." |
| Shonisaurus popularis
(Holotype: USNM 21103) |
Late Triassic (Norian, ~210 Ma) | Height / Width: ~3.0 m
Length: ~15.0 m Mass: ~30.0 metric tons |
Formation: Luning Formation, Nevada, USA | "Nevada's colossal Triassic leviathan! One of the very first giant ichthyosaurs, moving through ancient deep waters with massive, whale-like grace." |
| Attenborosaurus conybeari
(Holotype: BMNH R1338) |
Early Jurassic (Sinemurian, ~195 Ma) | Height / Width: ~2.0 m
Length: ~5.0 m Mass: ~500 kg |
Formation: Charmouth Mudstone Formation, England | "Named after the legendary Sir David Attenborough! A stunning, short-necked plesiosaur with beautifully preserved skin impressions found in the UK." |
| Cryptoclidus richardsoni
(Holotype: CAMSM J.46988) |
Late Jurassic (Callovian, ~165–160 Ma) | Height / Width: ~1.5 m
Length: ~3.0–4.0 m Mass: ~800 kg |
Formation: Oxford Clay Formation, England | "Hidden clavicle! Featuring a flexible, slender neck and a mouth full of interlocking teeth designed to sweep through the sea floor scooping up soft prey." |
| Dolichorhynchops herschelensis
(Holotype: TMP 89.36.1) |
Late Cretaceous (Campanian, ~80–75 Ma) | Height / Width: ~1.2 m
Length: ~3.0–3.5 m Mass: ~300–400 kg |
Formation: Bearpaw Formation, Canada / Niobrara, USA | "Long-nosed face! A nimble, short-necked polycotylid pliosaur that zoomed through the Western Interior Seaway snapping up fast fish." |
| Elasmosaurus platyurus
(Holotype: ANSP 10081) |
Late Cretaceous (Campanian, ~80.5 Ma) | Height / Width: ~2.5 m
Length: ~10.3–14.0 m Mass: ~2.0–3.0 metric tons |
Formation: Pierre Shale, USA | "Neck-lizard extraordinaire! With over 70 vertebrae making up half its total length, its body was essentially a floating submarine beneath that snake-like neck." |
| Kronosaurus queenslandicus
(Holotype: QMF 1819) |
Early Cretaceous (Albian, ~120–100 Ma) | Height / Width: ~3.0 m
Length: ~9.0–10.5 m Mass: ~10.6–12.0 metric tons |
Formation: Wallumbilla Formation / Toolebuc Formation, Australia | "Named after Kronos the Titan! Boasting a skull over nine feet long packed with banana-sized teeth capable of crushing any marine rival in the Australian inland seas." |
| Liopleurodon ferox
(Holotype: Specimen lost; neotype OUMNH J.27245) |
Late Jurassic (Callovian–Kimmeridgian, ~160–155 Ma) | Height / Width: ~2.5 m
Length: ~5.0–7.0 m Mass: ~1.0–1.7 metric tons |
Formation: Oxford Clay Formation, England / France | "Smooth-sided teeth! The apex terror of the Jurassic Oxfordian seas, sweeping its massive flippers to ambush prey with terrifying speed." |
| Plesiosaurus dolichodeirus
(Holotype: NHMUK R1336) |
Early Jurassic (Sinemurian, ~199–190 Ma) | Height / Width: ~1.5 m
Length: ~3.5 m Mass: ~450 kg |
Formation: Blue Lias Formation, England | "The classic fossil that started the plesiosaur craze! Mary Anning found specimens that showed the world how these four-flippered swimmers navigated ancient waters." |
| Trinacromerum kirki
(Holotype: NMC 1494) |
Late Cretaceous (Cenomanian–Turonian, ~95–90 Ma) | Height / Width: ~1.2 m
Length: ~3.0 m Mass: ~250 kg |
Formation: Carlile Shale / Dakota Formation, USA | "Three-pointed femur! A sleek, torpedo-bodied pliosaur built for fast acceleration while chasing schools of ancient fish." |
| Clidastes propython
(Holotype: YPM 1297) |
Late Cretaceous (Coniacian–Campanian, ~87–82 Ma) | Height / Width: ~0.6 m
Length: ~2.0–4.0 m Mass: ~50–100 kg |
Formation: Niobrara Formation, USA | "The smallest and most slender mosasaur! It slithered through coastal shallows like an aquatic monitor lizard, hunting fish with lightning speed." |
| Jormungandr walhallaensis
(Holotype: UND 11129) |
Late Cretaceous (Campanian, ~80 Ma) | Height / Width: ~0.8 m
Length: ~7.0 m Mass: ~800 kg |
Formation: Pembina Member / Pierre Shale, USA | "Named after the Midgard serpent from Norse mythology! A transitionary mosasaur showing key evolutionary links between smaller and giant forms." |
| Megalania priscus (Varanus priscus)
(Syntype specimens) |
Pleistocene (Early–Late Pleistocene, ~1.5 Ma – 50,000 years ago) | Height / Width: ~1.0 m
Length: ~5.5–7.0 m Mass: ~500–1,940 kg |
Formation: Pleistocene Alluvial Deposits, Australia | "The giant Australian land monitor! While not strictly marine, this colossal terrestrial apex predator ruled the Outback rivers and billabongs alongside early humans." |
| Mosasaurus beaugei
(Specimen specimens from phosphates) |
Late Cretaceous (Maastrichtian, ~70–66 Ma) | Height / Width: ~3.0 m
Length: ~12.0–15.0 m Mass: ~14.0 metric tons |
Formation: Oulad Abdoun Basin, Morocco | "The Moroccan ocean lord! A massive, heavy-skulled apex mosasaur that ruled the shallow phosphate seas of North Africa right up to the end of the Cretaceous." |
| Tylosaurus bernardi
(Holotype: IRSNB R22) |
Late Cretaceous (Campanian–Maastrichtian, ~85–66 Ma) | Height / Width: ~3.0 m
Length: ~12.0–14.0 m Mass: ~10.0–12.0 metric tons |
Formation: Niobrara / Pierre Shale, USA / Smoky Hill Chalk | "The battering ram of the Western Interior Seaway! Sporting an elongated, bone-reinforced snout used to ram and stun rival marine reptiles before devouring them." |
| Dunkleosteus amblyodoratus
(Holotype: CMNH specimens) |
Late Devonian (Frasnian–Famennian, ~380–358 Ma) | Height / Width: ~3.2 m
Length: ~4.0–14.0 m Mass: ~30.0 metric tons |
Formation: Cleveland Shale / Ohio Shale, USA | "The armored terror of the Devonian! Instead of teeth, it possessed self-sharpening bony jaw plates that could slice through shark armor like paper." |
| Otodus megalodon
(Syntype dental specimens) |
Miocene–Pliocene (Burdigalian–Piacenzian, ~23–3.6 Ma) | Height / Width: ~3.5 m (fin height)
Length: ~15.0–20.0 m Mass: ~50.0–60.0 metric tons |
Formation: Global marine deposits (Calvert Cliffs, USA; Gatun Formation, Panama) | "The undisputed megatooth superstar of the prehistoric oceans! A colossal, whale-hunting shark that dominated the global seas before fading into extinction." |
Synapsids & Prehistoric Mammals Scientific Catalog
| Taxon & Specimen | Age & Time Period | Dimensions (Height, Length, Mass) | Location Formation | Teodora Villavicencio's Comments (Legend Quest: Master of Myth) (VO: Annemarie Blanco) |
| Dimetrodon grandis
(Holotype: MCZ 1351) |
Early Permian (Cisuralian, ~298–272 Ma) | Height / Sail: ~1.0–1.7 m
Length: ~3.2–3.5 m Mass: ~110–250 kg |
Formation: Clear Fork / Arroyo Formation, USA | "Not a dinosaur! This magnificent sail-backed synapsid is actually more closely related to you and me than to T. rex. That giant neural-spine sail was likely used for thermoregulation and visual displays!" |
| Bulbasaurus phylloxyron
(Holotype: BP/1/7454) |
Late Permian (Lopingian, ~255 Ma) | Height: ~0.25 m
Length: ~0.6–1.0 m Mass: ~10–15 kg |
Formation: Teekloof Formation / Beaufort Group, South Africa | "Named after the Pokémon Bulbasaur because of its bulbous, leaf-cutting snout! A charming little dicynodont with tusk-like premaxillae that browsed on late Permian foliage." |
| Lystrosaurus curvatus
(Holotype: AMNH 5556) |
Late Permian to Early Triassic (~252–247 Ma) | Height: ~0.3–0.4 m
Length: ~0.6–1.2 m Mass: ~10–40 kg |
Formation: Fremouw Formation, Antarctica / Beaufort Group, South Africa | "The ultimate survivor of the End-Permian extinction! This barrel-chested, shovel-beaked dicynodont made up over 90 percent of all land vertebrate fossils in some Triassic layers." |
| Alphadon halleyi
(Holotype: UCMP 50570) |
Late Cretaceous (Maastrichtian, ~70–66 Ma) | Height / Width: ~0.05 m
Length: ~0.15–0.2 m Mass: ~50–100 g |
Formation: Hell Creek / Lance Formation, USA | "A tiny, shrew-like metatherian mammal scurrying underfoot while Triceratops and T. rex walked the earth! Proving that our furry mammalian ancestors were right there in the shadow of the dinosaurs." |
References
External links
- 100 Million B.C. Archived 2015-05-13 at the Wayback Machine at The Asylum
- 100 Million BC on IMDb Search this movie on
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