List of Dinosauria 2
From EverybodyWiki Bios & Wiki
List of Dinosauria (Dinosauria)
Master Theropoda Field Guide & Catalog
Order: Saurischia (“lizard-hipped” dinosaurs)
Suborder: Theropoda
Infraorder Ceratosauria
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
|---|---|---|---|---|---|---|---|---|---|
| Hollow Form | Coelophysis bauri | Carnivore | Late Triassic (Norian, ~208–201 Ma) | Real World / Walking with Dinosaurs | L: 3 m (9.8 ft)
H: 0.7 m (2.3 ft) |
15–25 kg (33–55 lbs) | Valid
Cope, 1889 |
New Mexico, USA
(Chinle Fm.) |
"A swift and slender shadow from the dawn of the reptilian age. Precision and agility over raw power." |
| Foot Lizard | Podokesaurus holyokensis | Carnivore | Early Jurassic (Pliensbachian–Toarcian, ~190–174 Ma) | Real World | L: 1 m (3.3 ft)
H: 0.3 m (1 ft) |
5–10 kg (11–22 lbs) | Valid
Talbot, 1911 |
Massachusetts, USA
(Portland Fm.) |
"Small, fleet-footed, and bound to history by the single trace it left behind before the flames took its original fossil." |
| Before Elegant Jaw | Procompsognathus triassicus | Carnivore | Late Triassic (Norian, ~210 Ma) | Real World / Jurassic Park (novel) | L: 1 m (3.3 ft)
H: 0.4 m (1.3 ft) |
1–2 kg (2.2–4.4 lbs) | Valid
Fraas, 1913 |
Germany
(Löwenstein Fm.) |
"Do not measure danger purely by stature; in great numbers, even the smallest predator becomes a tide." |
| Horned Lizard | Ceratosaurus nasicornis | Carnivore | Late Jurassic (Kimmeridgian–Tithonian, ~153–148 Ma) | Real World / Fantasia (1940) / JWE | L: 6 m (20 ft)
H: 2 m (6.6 ft) |
600–900 kg (1,300–2,000 lbs) | Valid
Marsh, 1884 |
Colorado, USA
(Morrison Fm.) |
"A prominent horn upon its snout—a grand blade of bone for a true terror of the Jurassic floodplains." |
| Two-Crested Lizard | Dilophosaurus wetherilli | Carnivore | Early Jurassic (Sinemurian–Pliensbachian, ~193 Ma) | Real World / Jurassic Park / JWE | L: 7 m (23 ft)
H: 1.8 m (6 ft) |
400 kg (880 lbs) | Valid
Welles, 1954 |
Arizona, USA
(Kayenta Fm.) |
"Adorned with twin crowns of bone. A distinctive visual signature for an early apex predator." |
| Meat-Eating Bull | Carnotaurus sastrei | Carnivore | Late Cretaceous (Campanian–Maastrichtian, ~72–69 Ma) | Real World / Disney's Dinosaur / JWE | L: 7.8 m (25.6 ft)
H: 2.1 m (6.9 ft) |
1.3–1.5 metric tons | Valid
Bonaparte, 1985 |
Chubut, Argentina
(La Colonia Fm.) |
"Bull-horned and built for sudden, explosive bursts of speed. Its vestigial arms are quite peculiar." |
| Mahajanga Lizard | Majungasaurus crenatissimus | Carnivore | Late Cretaceous (Maastrichtian, ~70–66 Ma) | Real World / JWE | L: 6–7 m (20–23 ft)
H: 2 m (6.6 ft) |
1.1 metric tons | Valid
Depéret, 1896 |
Madagaskar
(Maevarano Fm.) |
"A stocky hunter of the island realm, bearing a single blunt horn centered atop its dome." |
Infraorder Carnosauria
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
| Well-Spined Vertebra | Eustreptospondylus oxoniensis | Carnivore | Middle Jurassic (Callovian, ~163–162 Ma) | Real World / Walking with Dinosaurs | L: 4.6 m (15 ft)
H: 1.5 m (5 ft) |
0.5 metric tons | Valid
Walker, 1964 |
Oxfordshire, England
(Oxford Clay Fm.) |
"An island-dwelling swimmer adept at patrolling ancient European shorelines." |
| Marsh's Lizard | Marshosaurus bicentesimus | Carnivore | Late Jurassic (Kimmeridgian–Tithonian, ~155–150 Ma) | Real World | L: 4.5 m (15 ft)
H: 1.4 m (4.6 ft) |
200 kg (440 lbs) | Valid
Madsen, 1976 |
Utah, USA
(Morrison Fm.) |
"Named to honor Othniel Charles Marsh; a medium-sized predator navigating the shadows of giants." |
| Much-Spine Rib | Poekilopleuron bucklandii | Carnivore | Middle Jurassic (Bathonian, ~168 Ma) | Real World | L: 9 m (30 ft)
H: 2.5 m (8.2 ft) |
1–1.5 metric tons | Valid
Eudes-Deslongchamps, 1838 |
Normandy, France
(Calcaire de Caen) |
"One of the earliest theropods ever named, possessing powerful forelimbs suited for grasping." |
| Savage Lizard | Torvosaurus gurneyi | Carnivore | Late Jurassic (Tithonian, ~150 Ma) | Real World / JWE | L: 10 m (33 ft)
H: 3 m (10 ft) |
4–5 metric tons | Valid
Mateus et al., 2014 |
Portugal
(Lourinhã Fm.) |
"A titan among Jurassic predators, dominating the prehistoric woodlands of ancient Iberia." |
| High-Spined Lizard | Acrocanthosaurus atokensis | Carnivore | Early Cretaceous (Aptian–Albian, ~115–110 Ma) | Real World / JWE | L: 11.5 m (38 ft)
H: 3.5 m (11.5 ft) |
4.4–6.2 metric tons | Valid
Stovall & Langston, 1950 |
Oklahoma/Texas, USA
(Antlers / Twin Mountains Fm.) |
"Tall spines along its back supported massive muscle ridges—built to overpower heavy prey." |
| Giant Southern Lizard | Giganotosaurus carolinii | Carnivore | Late Cretaceous (Cenomanian, ~98–97 Ma) | Real World / Jurassic World Dominion | L: 12.5–13 m (41–43 ft)
H: 3.8 m (12.5 ft) |
6.8–8.5 metric tons | Valid
Coria & Salgado, 1995 |
Neuquén, Argentina
(Candeleros Fm.) |
"A colossal carnivore rivaling the King itself, engineered to hunt long-necked sauropods." |
| Different Lizard | Allosaurus europaeus | Carnivore | Late Jurassic (Kimmeridgian, ~155 Ma) | Real World | L: 12.5 m (40.6 ft)
H: 4.2 m (13.2 ft) |
1–5.5 metric tons | Valid
Mateus et al., 2006 |
Portugal / New Mexico, USA
(Lourinhã / Morrison Fm.) |
"The European cousin of North America's classic lion of the Jurassic." |
| Yangchuan Lizard | Yangchuanosaurus zigongensis | Carnivore | Middle Jurassic (Bathonian–Callovian, ~168–163 Ma) | Real World | L: 8 m (26 ft)
H: 2.5 m (8.2 ft) |
1.5–2 metric tons | Valid
Gao, 1993 |
Sichuan, China
(Xiashaximiao Fm.) |
"A formidable Asian carnosaur featuring a heavily ridged skull and strong jaws." |
| Heavy Claw | Baryonyx walkeri | Piscivore / Carnivore | Early Cretaceous (Barremian, ~130–125 Ma) | Real World / Jurassic World / JWE | L: 8.5–10 m (28–33 ft)
H: 2.5 m (8.2 ft) |
1.7–2 metric tons | Valid
Charig & Milner, 1986 |
Surrey, England
(Weald Clay Fm.) |
"Bearing a massive curved hook on its first digit, designed to snatch fish directly from waterways." |
| Spine Lizard | Spinosaurus aegyptiacus | Piscivore / Carnivore | Late Cretaceous (Cenomanian, ~99–93.5 Ma) | Real World / Jurassic Park III / JWE | L: 14 m (46 ft)
H: 4 m (13 ft) |
7.4–8.8 metric tons | Valid
Stromer, 1915 |
Massif de la Daoura, Morocco / Egypt
(Bahariya / Kem Kem Fm.) |
"The river dragon of antiquity. Its gigantic dorsal sail dominated North Africa's ancient swamps." |
| Crocodile Mimic | Suchomimus tenerensis | Piscivore / Carnivore | Early Cretaceous (Aptian, ~121–113 Ma) | Real World / JWE | L: 9.5–11 m (31–36 ft)
H: 3 m (10 ft) |
2.5–3.8 metric tons | Valid
Sereno et al., 1998 |
Niger
(Elrhaz Fm.) |
"Narrow, conical-toothed jaws adapted to snap up aquatic prey in river systems." |
| Alberta Lizard | Albertosaurus sarcophagus | Carnivore | Late Cretaceous (Early Maastrichtian, ~71–68 Ma) | Real World / JWE | L: 8.6–9 m (28–30 ft)
H: 2.8 m (9.2 ft) |
1.3–2.5 metric tons | Valid
Osborn, 1905 |
Alberta, Canada
(Horseshoe Canyon Fm.) |
"A fleet-footed tyrannosaur known from mass bonebeds, suggesting pack-hunting behavior." |
| Fierce Lizard | Gorgosaurus libratus | Carnivore | Late Cretaceous (Campanian, ~76.6–75.1 Ma) | Real World / Walking with Dinosaurs 3D | L: 8–9 m (26–30 ft)
H: 2.7 m (8.8 ft) |
2.4–2.8 metric tons | Valid
Lambe, 1914 |
Alberta, Canada
(Dinosaur Park Fm.) |
"Sleek, gracile, and terrifyingly swift across the floodplains of Laramidia." |
| Qianzhou Lizard | Qianzhousaurus sinensis | Carnivore | Late Cretaceous (Maastrichtian, ~72–66 Ma) | Real World / JWE | L: 8.5 m (28 ft)
H: 2.2 m (7.2 ft) |
750–1,000 kg | Valid
Lü et al., 2014 |
Ganzhou, China
(Nanx雄/Nanxiong Fm.) |
"Nicknamed 'Pinocchio rex' for its remarkably long, slender snout." |
| Disturbing Lizard | Tarbosaurus bataar | Carnivore | Late Cretaceous (Maastrichtian, ~70 Ma) | Real World | L: 10–12 m (33–40 ft)
H: 3.5 m (11.5 ft) |
4.5–5 metric tons | Valid
Maleev, 1955 |
Nemegt Basin, Mongolia
(Nemegt Fm.) |
"The Asian counterpart to the tyrant king—possessing tiny arms and an immensely rigid skull." |
| Tyrant Lizard King | Tyrannosaurus rex | Carnivore | Late Cretaceous (Maastrichtian, ~68–66 Ma) | Real World / Fantasia (1940) / JP / JWE | L: 12.3–15.5 m (40–50 ft)
H: 3.6–5.5 m (12–17.5 ft) |
8.4–14 metric tons | Valid
Osborn, 1905 |
Montana/Wyoming, USA
(Hell Creek Fm.) |
"The undisputed sovereign of bone-crushing force. Its entry into history remains unmatched." |
Infraorder Coelurosauria
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
| Hollow Tail | Coelurus fragilis | Carnivore | Late Jurassic (Kimmeridgian–Tithonian, ~155–150 Ma) | Real World | L: 2.4 m (7.9 ft)
H: 0.7 m (2.3 ft) |
13–20 kg (28–44 lbs) | Valid
Marsh, 1879 |
Wyoming, USA
(Morrison Fm.) |
"A light, hollow-boned hunter maneuvering through dense brush." |
| Bird Robber | Ornitholestes hermanni | Carnivore | Late Jurassic (Kimmeridgian–Tithonian, ~154 Ma) | Real World / Walking with Dinosaurs | L: 2 m (6.6 ft)
H: 0.6 m (2 ft) |
12.5–15 kg | Valid
Osborn, 1903 |
Wyoming, USA
(Morrison Fm.) |
"Agile and sharp-eyed, built to catch small vertebrates and early mammals." |
| Intrepid Doom | Moros intrepidus | Carnivore | Late Cretaceous (Cenomanian, ~96 Ma) | Real World / Jurassic World Dominion | L: 1.2 m (4 ft)
H: 0.5 m (1.6 ft) |
78 kg (170 lbs) | Valid
Zanno et al., 2019 |
Utah, USA
(Cedar Mountain Fm.) |
"A tiny tyrant harbinger, marking the dawn of the supreme North American predators." |
| Dwarf Tyrant | Nanotyrannus lethaeus | Carnivore | Late Cretaceous (Maastrichtian, ~68–66 Ma) | Real World | L: 5.2 m (17 ft)
H: 1.8 m (6 ft) |
600–900 kg | Valid / Contested
Bakker et al., 1988 |
Montana, USA
(Hell Creek Fm.) |
"A debated identity—whether a distinct slender hunter or a juvenile Tyrannosaurus." |
| Pretty Jaw | Compsognathus longipes | Carnivore | Late Jurassic (Tithonian, ~150 Ma) | Real World / The Lost World: JP | L: 1 m (3.3 ft)
H: 0.3 m (1 ft) |
0.83–3.5 kg | Valid
Wagner, 1859 |
Bavaria, Germany
(Solnhofen Limestone) |
"Small as a hen, yet carrying the unmistakable blueprint of a true theropod predator." |
| Before First Horn | Proceratosaurus bradleyi | Carnivore | Middle Jurassic (Bathonian, ~166 Ma) | Real World / JWE | L: 3 m (9.8 ft)
H: 0.9 m (3 ft) |
40 kg (88 lbs) | Valid
Woodward, 1910 |
Gloucestershire, England
(White Limestone Fm.) |
"An early ancestor of tyrannosauroids sporting a subtle crest atop its snout." |
| Feathered Tyrant | Yutyrannus huali | Carnivore | Early Cretaceous (Aptian, ~125 Ma) | Real World / JWE | L: 9 m (30 ft)
H: 2.7 m (8.8 ft) |
1.4 metric tons | Valid
Xu et al., 2012 |
Liaoning, China
(Yixian Fm.) |
"The largest known direct evidence of a feathered dinosaur, wrapped in dense plumage against the cold." |
| Ancient Bird Mimic | Archaeornithomimus asiaticus | Herbivore / Omnivore | Late Cretaceous (Turonian, ~90 Ma) | Real World / JWE | L: 3.4 m (11 ft)
H: 1.1 m (3.6 ft) |
45–90 kg | Valid
Russell, 1972 |
Inner Mongolia, China
(Iren Dabasu Fm.) |
"An early ostrich-mimic dinosaur demonstrating the transition toward toothless beak structures." |
| Samuel's Emu Mimic | Dromiceiomimus samueli | Herbivore / Omnivore | Late Cretaceous (Campanian, ~76 Ma) | Real World | L: 3.5 m (11.5 ft)
H: 1.2 m (4 ft) |
100–150 kg | Valid / Syn. Ornithomimus | Alberta, Canada
(Dinosaur Park Fm.) |
"Possessing enormous orbits and elongated limbs suited for high-speed evasion." |
| Chicken Mimic | Gallimimus bullatus | Herbivore / Omnivore | Late Cretaceous (Maastrichtian, ~70 Ma) | Real World / Jurassic Park / JWE | L: 6 m (20 ft)
H: 2 m (6.6 ft) |
440–490 kg | Valid
Osmólska et al., 1972 |
Omnogovi, Mongolia
(Nemegt Fm.) |
"They do move in herds. A fleet-footed runner capable of outstripping most pursuers." |
| Bird Mimic | Ornithomimus velox | Herbivore / Omnivore | Late Cretaceous (Maastrichtian, ~66 Ma) | Real World | L: 3.8 m (12.5 ft)
H: 1.4 m (4.6 ft) |
170 kg (370 lbs) | Valid
Marsh, 1890 |
Colorado, USA
(Denver Fm.) |
"Built identically to modern flightless birds, streamlined for ultimate velocity." |
| Ostrich Mimic | Struthiomimus altus | Herbivore / Omnivore | Late Cretaceous (Campanian, ~75 Ma) | Real World / JWE | L: 4.3 m (14 ft)
H: 1.4 m (4.6 ft) |
150 kg (330 lbs) | Valid
Lambe, 1902 |
Alberta, Canada
(Dinosaur Park Fm.) |
"Equipped with powerful hindquarters and a crop mechanism for processing vegetation." |
| Horrible Hand | Deinocheirus mirificus | Omnivore | Late Cretaceous (Maastrichtian, ~70 Ma) | Real World / JWE | L: 11 m (36 ft)
H: 4.4 m (14.4 ft) |
6.4 metric tons | Valid
Osmólska & Roniewicz, 1970 |
Omnogovi, Mongolia
(Nemegt Fm.) |
"Giant eight-foot arms ending in formidable claws, combined with a duck-billed, humped torso." |
| Hand Robber | Chirostenotes pergracilis | Omnivore / Carnivore | Late Cretaceous (Campanian, ~76.5 Ma) | Real World | L: 2 m (6.6 ft)
H: 1 m (3.3 ft) |
50 kg (110 lbs) | Valid
Gilmore, 1924 |
Alberta, Canada
(Dinosaur Park Fm.) |
"Slender hands with delicate digits designed for probing crevices and grasping prey." |
| Egg Seizer | Oviraptor philoceratops | Omnivore | Late Cretaceous (Campanian, ~75 Ma) | Real World | L: 1.6 m (5.2 ft)
H: 0.8 m (2.6 ft) |
33–40 kg | Valid
Osborn, 1924 |
Ömnögovi, Mongolia
(Djadokhta Fm.) |
"Misjudged by history as an egg thief, when in truth it died brooding its own nest with devotion." |
| Wounding Tooth | Troodon formosus | Carnivore / Omnivore | Late Cretaceous (Campanian, ~77 Ma) | Real World / Jurassic Park: The Game | L: 2.4 m (7.9 ft)
H: 1 m (3.3 ft) |
50 kg (110 lbs) | Nomen dubium / Valid
Leidy, 1856 |
Montana, USA
(Judith River Fm.) |
"Possessing an exceptionally high encephalization quotient and large, forward-facing binocular eyes." |
| Scythe Lizard | Therizinosaurus cheloniformis | Herbivore | Late Cretaceous (Maastrichtian, ~70 Ma) | Real World / Jurassic World Dominion | L: 10 m (33 ft)
H: 4.5 m (15 ft) |
5 metric tons | Valid
Maleev, 1954 |
Ömnögovi, Mongolia
(Nemegt Fm.) |
"Yielding meter-long giant claws—not for slaughter, but for harvesting tall vegetation." |
Infraorder Deinonychosauria
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
| Savage Robber | Atrociraptor marshalli | Carnivore | Late Cretaceous (Maastrichtian, ~68.5 Ma) | Real World / Jurassic World Dominion | L: 2 m (6.6 ft)
H: 0.7 m (2.3 ft) |
15 kg (33 lbs) | Valid
Currie & Varricchio, 2004 |
Alberta, Canada
(Horseshoe Canyon Fm.) |
"Deep, stout jaws packed with recurved teeth designed for a crushing bite profile." |
| Terrible Claw | Deinonychus antirrhopus | Carnivore | Early Cretaceous (Aptian–Albian, ~115–108 Ma) | Real World / Inspiration for JP Raptors | L: 3.4 m (11 ft)
H: 1 m (3.3 ft) |
73–100 kg | Valid
Ostrom, 1969 |
Montana/Wyoming, USA
(Cloverly Fm.) |
"The key that unlocked the Dinosaur Renaissance—proving these creatures were warm-blooded and dynamic." |
| Western Claw | Hesperonychus elizabethae | Carnivore | Late Cretaceous (Campanian, ~75 Ma) | Real World | L: 1 m (3.3 ft)
H: 0.3 m (1 ft) |
1.9 kg (4.2 lbs) | Valid
Longrich & Currie, 2009 |
Alberta, Canada
(Dinosaur Park Fm.) |
"One of the smallest known dromaeosaurids in North America, hunting micro-fauna in the undergrowth." |
| Fire Thief | Pyroraptor olympius | Carnivore | Late Cretaceous (Campanian–Maastrichtian, ~70 Ma) | Real World / Jurassic World Dominion | L: 1.6 m (5.2 ft)
H: 0.6 m (2 ft) |
30 kg (66 lbs) | Valid
Allain & Taquet, 2000 |
Provence, France
(Grès à Reptiles Fm.) |
"Discovered following a forest fire in Southern France; compact and fully feathered." |
| Lizard Robber | Saurornitholestes sullivani | Carnivore | Late Cretaceous (Campanian, ~73 Ma) | Real World | L: 1.8 m (6 ft)
H: 0.6 m (2 ft) |
10–15 kg | Valid
Sullivan, 2006 |
New Mexico, USA
(Kirtland Fm.) |
"Equipped with a keen olfactory apparatus for tracking prey across ancient floodplains." |
| Utah's Thief | Utahraptor ostrommaysi | Carnivore | Early Cretaceous (Barremian, ~135–125 Ma) | Real World / JWE | L: 5.5–7 m (18–23 ft)
H: 1.8 m (6 ft) |
500–600 kg | Valid
Kirkland et al., 1993 |
Utah, USA
(Cedar Mountain Fm.) |
"A heavy-built apex dromaeosaur, wielding a 9-inch sickle claw capable of dispatching large prey." |
| Swift Seizer | Velociraptor osmolskae | Carnivore | Late Cretaceous (Campanian, ~75 Ma) | Real World / JWE | L: 2 m (6.6 ft)
H: 0.5 m (1.6 ft) |
15–20 kg | Valid
Godefroit et al., 2008 |
Inner Mongolia, China
(Bayan Mandahu Fm.) |
"Distinguished by its elongated, upturned snout; a quill-bearing predator of the desert dunes." |
| Ancient Wing | Archaeopteryx albersdoerferi | Carnivore / Insectivore | Late Jurassic (Tithonian, ~150 Ma) | Real World | L: 0.5 m (1.6 ft)
H: 0.2 m (0.7 ft) |
0.8–1 kg | Valid
Kundu et al., 2019 |
Bavaria, Germany
(Solnhofen Limestone) |
"The premier transitional icon—bridging reptilian teeth and long tails with avian flight feathers." |
| Alex's Bird | Alexornis antecedens | Insectivore | Late Cretaceous (Campanian, ~73 Ma) | Real World | L: 0.15 m (0.5 ft)
H: 0.1 m (0.3 ft) |
20–50 g | Valid
Brodkorb, 1976 |
Baja California, Mexico
(La Bocana Roja Fm.) |
"An early enantiornithine bird that soared above Late Cretaceous coastal marshes." |
Master Sauropodomorpha Field Guide & Catalog
Order: Saurischia (“lizard-hipped” dinosaurs)
Suborder: Sauropodomorpha
Infraorder Prosauropoda
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
| Herrera's Lizard | Herrerasaurus ischigualastensis | Carnivore | Late Triassic (Carnian, ~231.4 Ma) | Real World / Jurassic Park / JWE | L: 3–6 m (10–20 ft)
H: 1.2–1.5 m (4–5 ft) |
210–350 kg (460–770 lbs) | Valid
Reig, 1963 |
San Juan, Argentina
(Ischigualasto Fm.) |
"An archaic predator standing at the very dawn of dinosaurian domination, balancing speed with formidable grasping claws." |
| Near Lizard | Anchisaurus polyzelus | Herbivore / Omnivore | Early Jurassic (Pliensbachian–Toarcian, ~195–174 Ma) | Real World | L: 2–2.4 m (6.6–8 ft)
H: 0.6–0.8 m (2–2.6 ft) |
27–30 kg (60–66 lbs) | Valid
Hitchcock, 1865 |
Connecticut / Mass., USA
(Portland Fm.) |
"A slender pioneer of the long-necked lineage, capable of rearing onto its hind feet to reach delicate foliage." |
| Efrain's Lizard | Efraasia minor | Herbivore | Late Triassic (Norian, ~210 Ma) | Real World | L: 6 m (20 ft)
H: 1.5 m (5 ft) |
300–500 kg (660–1,100 lbs) | Valid
Galton, 1973 |
Baden-Württemberg, Germany
(Löwenstein Fm.) |
"A basal sauropodomorph displaying the classic light-built body plan prior to the evolution of true gigantism." |
| Smurfette's Charm | Smurfette smurfiness | Herbivore | Fictional / Anachronistic | The Smurfs Franchise | L: 0.2 m (0.6 ft)
H: 0.15 m (0.5 ft) |
0.2 kg (0.4 lbs) | Fictional Entry
(Peyo, 1981) |
Smurf Village Forest
(Fictional Epoch) |
"A whimsical anomaly outside nature's tapestry—small, blue, and distinctly alien to the ancient Triassic strata." |
| Socket-Toothed Lizard | Thecodontosaurus antiquus | Herbivore | Late Triassic (Rhaetian, ~205–201 Ma) | Real World | L: 1.2–2 m (4–6.6 ft)
H: 0.5 m (1.6 ft) |
10–20 kg (22–44 lbs) | Valid
Morris, 1843 |
Bristol, England
(Magnesian Conglomerate) |
"One of the earliest discovered basal sauropodomorphs, revealing teeth set in distinct sockets along slender jaws." |
| Massive Vertebra | Massospondylus kaalae | Herbivore | Early Jurassic (Hettangian–Pliensbachian, ~200–183 Ma) | Real World / JWE | L: 4–6 m (13–20 ft)
H: 1.5 m (5 ft) |
1,000 kg (2,200 lbs) | Valid
Barrett, 2009 |
Free State, South Africa
(Elliot Fm.) |
"Famous for preserving pristine fossilized eggs and embryos, illuminating the nurture of ancient giants." |
| Broad Lizard | Plateosaurus gracilis | Herbivore | Late Triassic (Norian, ~214–204 Ma) | Real World / Walking with Dinosaurs | L: 4.8–10 m (16–33 ft)
H: 2–3 m (6.6–10 ft) |
600–4,000 kg | Valid
von Meyer, 1837 |
Central Europe (Germany, Switz.)
(Trossingen Fm.) |
"The quintessential prosauropod of Central Europe; bipedal, strong-thumbed, and vastly abundant." |
| Rioja Lizard | Riojasaurus incertus | Herbivore | Late Triassic (Norian, ~228–208 Ma) | Real World | L: 6.6–10 m (22–33 ft)
H: 2.5 m (8.2 ft) |
3 metric tons | Valid
Bonaparte, 1969 |
La Rioja, Argentina
(Los Colorados Fm.) |
"A heavy quadrupedal pioneer whose dense limb bones foreshadowed the true giant sauropods to come." |
Infraorder Sauropoda
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
|---|---|---|---|---|---|---|---|---|---|
| Big-Legged Lizard | Barapasaurus tagorei | Herbivore | Early Jurassic (Toarcian–Aalenian, ~178–174 Ma) | Real World | L: 12–14 m (39–46 ft)
H: 3.5–4 m (11.5–13 ft) |
7 metric tons | Valid
Jain et al., 1975 |
Telangana, India
(Kota Fm.) |
"One of the oldest known true sauropods, possessing slender limbs adapted for supporting vast bulk." |
| Arm Lizard | Brachiosaurus altithorax | Herbivore | Late Jurassic (Kimmeridgian–Tithonian, ~154–150 Ma) | Real World / Fantasia / Jurassic Park | L: 18–24 m (59–79 ft)
H: 12–14 m (39–47 ft) |
28–58 metric tons | Valid
Riggs, 1903 |
Colorado, USA / Telangana, India
(Morrison / Kota Fm.) |
"High-shouldered and majestic; a living tower capable of harvesting leaves from the highest forest canopy." |
| Earth God of the Deep | Sauroposeidon proteles | Herbivore | Early Cretaceous (Aptian–Albian, ~112–100 Ma) | Real World | L: 28–34 m (92–111 ft)
H: 17–18 m (56–59 ft) |
40–60 metric tons | Valid
Wedel et al., 2000 |
Oklahoma, USA
(Antlers Fm.) |
"Perhaps the tallest creature to walk the Earth, reaching skies no other terrestrial animal could touch." |
| Chambered Lizard | Camarasaurus supremus | Herbivore | Late Jurassic (Kimmeridgian–Tithonian, ~155–145 Ma) | Real World / JWE | L: 15–23 m (49–75 ft)
H: 6–8 m (20–26 ft) |
15–47 metric tons | Valid
Cope, 1877 |
Colorado, USA
(Morrison Fm.) |
"Recognizable by its boxy head and chisel-like teeth designed for tough, woody vegetation." |
| True Hoop Foot | Euhelopus zdanskyi | Herbivore | Early Cretaceous (Barremian–Aptian, ~129–113 Ma) | Real World | L: 15 m (49 ft)
H: 3.8 m (12.5 ft) |
15–20 metric tons | Valid
Wiman, 1929 |
Shandong, China
(Mengyin Fm.) |
"A distinctive Asian sauropod featuring an unusually elongated neck relative to its body proportions." |
| Hollow Tail Reversed | Opisthocoelicaudia skarzynskii | Herbivore | Late Cretaceous (Maastrichtian, ~70 Ma) | Real World | L: 11.4–13 m (37–43 ft)
H: 3.5 m (11.5 ft) |
8.4–10.5 metric tons | Valid
Borsuk-BiaŁynicka, 1977 |
Omnogovi, Mongolia
(Nemegt Fm.) |
"Possessed ball-and-socket tail vertebrae that created a remarkably rigid posterior support structure." |
| Deceptive Lizard | Apatosaurus ajax | Herbivore | Late Jurassic (Kimmeridgian–Tithonian, ~152–151 Ma) | Real World / Jurassic World / JWE | L: 21–27 m (69–88 ft)
H: 4.5–7.9 m (15–24 ft) |
16–32 metric tons | Valid
Marsh, 1877 |
Colorado, USA
(Morrison Fm.) |
"A broad, heavily built titan with thick neck vertebrae and a whip-like tail capable of breaking the sound barrier." |
| Double Beam | Diplodocus hallorum | Herbivore | Late Jurassic (Kimmeridgian–Tithonian, ~154–152 Ma) | Real World / Fantasia / JP / JWE | L: 29–33 m (95–108 ft)
H: 4–6.5 m (13–22 ft) |
15–25 metric tons | Valid
Gillette, 1991 |
New Mexico, USA
(Morrison Fm.) |
"An extraordinarily elongated profile featuring a low-slung body and an immensely long whip tail." |
| Mamenchi Lizard | Mamenchisaurus sinocanadorum | Herbivore | Late Jurassic (Oxfordian, ~160 Ma) | Real World / The Lost World: JP | L: 26–35 m (85–115 ft)
H: 6–17.5 m (20–55 ft) |
50–75 metric tons | Valid
Russell & Zheng, 1993 |
Xinjiang, China
(Shishugou Fm.) |
"Boasts one of the longest necks in the animal kingdom, comprising nearly half its total length." |
| Super Lizard | Supersaurus vivianae | Herbivore | Late Jurassic (Kimmeridgian–Tithonian, ~153 Ma) | Real World | L: 32–50 m (105–160 ft)
H: 21 m (69.5 ft) |
35–40 metric tons | Valid
Jensen, 1985 |
Colorado, USA
(Morrison Fm.) |
"Among the longest land animals known to science, stretching across vast distances of ancient floodplain." |
| Fearing Nothing | Dreadnoughtus schrani | Herbivore | Late Cretaceous (Campanian–Maastrichtian, ~77 Ma) | Real World / Jurassic World Dominion | L: 26 m (85 ft)
H: 18 m (59 ft) |
49–59 metric tons | Valid
Lacovara et al., 2014 |
Santa Cruz, Argentina
(Cerro Fortaleza Fm.) |
"Named for fearlessness; a remarkably complete titanosaur demonstrating astounding skeletal mass." |
| Patagonian Titan | Patagotitan mayorum | Herbivore | Early Cretaceous (Albian, ~101.6 Ma) | Real World | L: 37 m (121 ft)
H: 12 m (39.4 ft) |
55–57 metric tons | Valid
Carballido et al., 2017 |
Chubut, Argentina
(Cerro Barcino Fm.) |
"A colossal sauropod pushing the extreme biomechanical limits of terrestrial growth." |
| Salta Lizard | Saltasaurus loricatus | Herbivore | Late Cretaceous (Campanian–Maastrichtian, ~70 Ma) | Real World | L: 8.5–12 m (28–39 ft)
H: 2.5–3 m (8–10 ft) |
2.5–7 metric tons | Valid
Bonaparte & Powell, 1980 |
Salta, Argentina
(Lecho Fm.) |
"A heavily armored titanosaur covered in bony osteoderms and plates as protection against carnivores." |
Master Cerapoda Field Guide & Catalog
Order: Ornithischia (“bird-hipped” dinosaurs)
Suborder: Cerapoda
Infraorder Ornithopoda
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
| Lesotho Lizard | Lesothosaurus diagnosticus | Herbivore | Early Jurassic (Hettangian–Sinemurian, ~199–190 Ma) | Real World | L: 2 m (6.6 ft)
H: 0.6 m (2 ft) |
6–10 kg (13–22 lbs) | Valid
Galton, 1978 |
Lesotho & South Africa
(Upper Elliot Fm.) |
"A basal, swift-footed herbivore of the early Jurassic, relying on speed to evade early carnivores." |
| Little Shield Lizard | Scutellosaurus lawleri | Herbivore | Early Jurassic (Hettangian–Sinemurian, ~196 Ma) | Real World | L: 1.2 m (4 ft)
H: 0.5 m (1.6 ft) |
10 kg (22 lbs) | Valid
Colbert, 1981 |
Arizona, USA
(Kayenta Fm.) |
"An early armored ornithischian studded with hundreds of small bony scutes along its back." |
| Spine Tooth | Echinodon becklesii | Herbivore / Omnivore | Early Cretaceous (Berriasian, ~140 Ma) | Real World | L: 0.6 m (2 ft)
H: 0.2 m (0.7 ft) |
0.5–1 kg (1.1–2.2 lbs) | Valid
Owen, 1861 |
Dorset, England
(Lulworth Fm.) |
"A tiny, canine-toothed herbivore representing one of the last surviving heterodontosaurids." |
| Different-Toothed Lizard | Heterodontosaurus tucki | Herbivore / Omnivore | Early Jurassic (Hettangian–Sinemurian, ~200–190 Ma) | Real World | L: 1.18 m (3.9 ft)
H: 0.5 m (1.6 ft) |
2–3 kg (4.4–6.6 lbs) | Valid
Crompton & Charig, 1962 |
Cape Province, South Africa
(Elliot Fm.) |
"Possessed specialized teeth including prominent tusks, perfectly adapted for chewing diverse plant material." |
| Oak Lizard | Dryosaurus elderae | Herbivore | Late Jurassic (Kimmeridgian–Tithonian, ~155–150 Ma) | Real World / JWE | L: 2.5–3 m (8.2–10 ft)
H: 1.2 m (4 ft) |
80–90 kg (176–198 lbs) | Valid
Miles & Westwood, 2014 |
Utah, USA
(Morrison Fm.) |
"A hornless, toothless-beaked runner designed for rapid flight through open coniferous woodlands." |
| High-Ridge Tooth | Hypsilophodon foxii | Herbivore | Early Cretaceous (Barremian, ~130–125 Ma) | Real World / Jurassic Park (novel) | L: 1.8–2 m (6–6.6 ft)
H: 0.8 m (2.6 ft) |
20 kg (44 lbs) | Valid
Huxley, 1869 |
Isle of Wight, UK
(Vectis Fm.) |
"Compact and incredibly agile, once mistakenly thought to have lived in trees due to its long toes." |
| Parks' Lizard | Parksosaurus warreni | Herbivore | Late Cretaceous (Maastrichtian, ~70 Ma) | Real World | L: 2.5 m (8.2 ft)
H: 1 m (3.3 ft) |
45 kg (100 lbs) | Valid
Sternberg, 1937 |
Alberta, Canada
(Horseshoe Canyon Fm.) |
"A small bipedal gazelle of the Late Cretaceous floodplains, navigating underbrush with ease." |
| Tendon Lizard | Tenontosaurus dossi | Herbivore | Early Cretaceous (Aptian–Albian, ~115–108 Ma) | Real World | L: 6–7–8 m (20–26 ft)
H: 2–3 m (6.6–10 ft) |
1–2 metric tons | Valid
Winkler et al., 1997 |
Texas, USA
(Twin Mountains Fm.) |
"Reinforced with heavily ossified tendons along its spine and massive tail; a frequent prey target of packs." |
| God's Lizard | Thescelosaurus garbanii | Herbivore | Late Cretaceous (Maastrichtian, ~68–66 Ma) | Real World | L: 4–4.5 m (13–15 ft)
H: 1.5 m (5 ft) |
200–300 kg | Valid
Morris, 1976 |
California, USA
(Point Loma Fm.) |
"A heavily built, low-slung browser that persisted right up to the end-Cretaceous extinction." |
| Weald Canal Lizard | Valdosaurus canaliculatus | Herbivore | Early Cretaceous (Barremian, ~130–125 Ma) | Real World | L: 4–5 m (13–16.5 ft)
H: 1.5 m (5 ft) |
200 kg (440 lbs) | Valid
Galton, 1977 |
Isle of Wight, UK
(Wessex Fm.) |
"A dryosaurid cursorial herbivore inhabiting ancient European river deltas." |
| Flexible Lizard | Camptosaurus dispar | Herbivore | Late Jurassic (Kimmeridgian–Tithonian, ~156–145 Ma) | Real World / JWE | L: 5–8 m (16–26 ft)
H: 2 m (6.6 ft) |
500–1,000 kg | Valid
Marsh, 1879 |
Wyoming, USA
(Morrison Fm.) |
"A heavily built transitional iguandontian capable of shifting between bipedal browsing and quadrupedal standing." |
| Dragon Horse | Hippodraco scutodens | Herbivore | Early Cretaceous (Barremian, ~125 Ma) | Real World | L: 4.5 m (15 ft)
H: 1.5 m (5 ft) |
400 kg (880 lbs) | Valid
McDonald et al., 2010 |
Utah, USA
(Cedar Mountain Fm.) |
"Features a long, low skull reminiscent of a equine profile, roaming early North American floodplains." |
| Iguana Tooth | Iguanodon bernissartensis | Herbivore | Early Cretaceous (Barremian–Aptian, ~126–122 Ma) | Real World / Disney's Dinosaur / JWE | L: 9–11.8 m (30–39.2 ft)
H: 4.5 m (14 ft) |
3.0–4.5 metric tons | Valid
Boulenger, 1881 |
Bernissart, Belgium
(Sainte-Barbe Clays Fm.) |
"A titan of discovery equipped with rigid thumb spikes for defense and efficient grinding cheek teeth." |
| Muttaburra Lizard | Muttaburrasaurus langdoni | Herbivore | Early Cretaceous (Albian, ~105–100 Ma) | Real World / JWE | L: 8 m (26 ft)
H: 2.5 m (8.2 ft) |
2.8 metric tons | Valid
Bartholomai & Molnar, 1981 |
Queensland, Australia
(Mackunda Fm.) |
"Distinguished by a hollow, inflated muzzle structure likely used for resonance and long-range vocal calls." |
| Brave Lizard | Ouranosaurus nigeriensis | Herbivore | Early Cretaceous (Aptian, ~115–112 Ma) | Real World / JWE | L: 7–8.3 m (23–27 ft)
H: 2.7 m (8.8 ft) |
2.2 metric tons | Valid
Taquet, 1976 |
Agadez, Niger
(Elrhaz Fm.) |
"Bore tall neural spines forming a magnificent sail or hump across its back for thermoregulation or display." |
| Helmet Lizard | Corythosaurus casuarius | Herbivore | Late Cretaceous (Campanian, ~77–75.7 Ma) | Real World / Fantasia / JP III / JWE | L: 8.1–9 m (26.6–30 ft)
H: 3.5 m (11.5 ft) |
3–4 metric tons | Valid
Brown, 1914 |
Alberta, Canada / Wyoming, USA
(Dinosaur Park / Lance Fm.) |
"Crowned with a hollow, helmet-like crest that transformed its breath into low, echoing horn calls." |
| Edmonton Lizard | Edmontosaurus regalis | Herbivore | Late Cretaceous (Campanian, ~73 Ma) | Real World / JWE | L: 12 m (39 ft)
H: 3–4 m (10–13 ft) |
4.0–9.0 metric tons | Valid
Lambe, 1917 |
Alberta, Canada / Wyoming, USA
(Horseshoe Canyon / Lance Fm.) |
"A giant crestless duckbill that traveled in vast migratory herds across ancient Laramidia." |
| Highest Lizard | Hypacrosaurus stebingeri | Herbivore | Late Cretaceous (Campanian, ~75 Ma) | Real World | L: 9.1 m (30 ft)
H: 3.5 m (11.5 ft) |
4 metric tons | Valid
Horner & Currie, 1994 |
Montana, USA
(Two Medicine Fm.) |
"Recognizable by its tall neural spines and rounded cranial crest; extensive nesting sites have been mapped." |
| Lambe's Lizard | Lambeosaurus magnicristatus | Herbivore | Late Cretaceous (Campanian, ~75.5 Ma) | Real World | L: 9–9.5 m (30–31 ft)
H: 3.5 m (11.5 ft) |
3.5–4 metric tons | Valid
Sternberg, 1935 |
Alberta, Canada
(Dinosaur Park Fm.) |
"Bore an immense, forward-scooping hatchet crest that served as a dynamic visual and acoustic ornament." |
| Good Mother Lizard | Maiasaura peeblesorum | Herbivore | Late Cretaceous (Campanian, ~76.7 Ma) | Real World / Jurassic Park (novel) | L: 9 m (30 ft)
H: 2.5 m (8.2 ft) |
3–4 metric tons | Valid
Horner & Makela, 1979 |
Montana, USA
(Two Medicine Fm.) |
"The landmark discovery proving dinosaurs tended their hatchlings in organized, communal nesting colonies." |
| Near Crested Lizard | Parasaurolophus walkeri | Herbivore | Late Cretaceous (Campanian, ~76.5–73 Ma) | Real World / Fantasia / JP / JWE | L: 9.5–10 m (31–33 ft)
H: 2.8 m (9.2 ft) |
2.5–3.5 metric tons | Valid
Parks, 1922 |
Alberta, Canada
(Dinosaur Park Fm.) |
"Features a long, backward-curving tubular crest acting as a natural trombone for resonant herd communication." |
| Lizard Crest | Saurolophus osborni | Herbivore | Late Cretaceous (Early Maastrichtian, ~70 Ma) | Real World | L: 9.8 m (32 ft)
H: 3 m (10 ft) |
3–3.8 metric tons | Valid
Brown, 1912 |
Alberta, Canada
(Horseshoe Canyon Fm.) |
"Sprouted a solid spike crest projecting backward, potentially supporting an inflatable nasal sac." |
| Shantung Lizard | Shantungosaurus giganteus | Herbivore | Late Cretaceous (Campanian, ~73 Ma) | Real World | L: 15–16.6 m (49–54 ft)
H: 4.5–6 m (15–19.8 ft) |
13–16 metric tons | Valid
Hu, 1973 |
Shandong, China
(Xingezhuang Fm.) |
"The largest non-sauropod ornithischian dinosaur ever discovered, rivaling medium sauropods in sheer mass." |
| Qingdao Lizard | Tsintaosaurus spinorhinus | Herbivore | Late Cretaceous (Campanian, ~70 Ma) | Real World / JWE | L: 8.3–10 m (27–33 ft)
H: 3 m (10 ft) |
2.5–3 metric tons | Valid
Young, 1958 |
Shandong, China
(Jingangkou Fm.) |
"Adorned with a distinctive forward-pointing tubular crest atop its snout." |
Infraorder Ceratopia
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
|---|---|---|---|---|---|---|---|---|---|
| Dragon King of Hogwarts | Dracorex hogwartsia | Herbivore | Late Cretaceous (Maastrichtian, ~66 Ma) | Real World / JWE | L: 2.4–3 m (7.9–10 ft)
H: 1 m (3.3 ft) |
193 kg (425 lbs) | Valid / Growth Stage
Bakker et al., 2006 |
South Dakota, USA
(Hell Creek Fm.) |
"A flat-headed pachycephalosaur studded with dragon-like horns; potentially a juvenile form of Pachycephalosaurus." |
| Goyo's Head | Goyocephale lattimorei | Herbivore | Late Cretaceous (Santonian–Campanian, ~80 Ma) | Real World | L: 1.8–2 m (6–6.6 ft)
H: 0.6 m (2 ft) |
10–20 kg | Valid
Perle et al., 1982 |
Ömnögovi, Mongolia
(Bayan Shireh Fm.) |
"A flat-headed bonehead possessing prominent canine-like premaxillary teeth." |
| Even Head | Homalocephale calathocercos | Herbivore | Late Cretaceous (Campanian, ~70 Ma) | Real World / JWE | L: 1.8–2 m (6–6.6 ft)
H: 0.6 m (2 ft) |
43 kg (95 lbs) | Valid
Maryańska & Osmólska, 1974 |
Omnogovi, Mongolia
(Nemegt Fm.) |
"Featuring a broad pelvis and a smooth, flat skull roof lacking a fully thickened dome." |
| Thick-Headed Lizard | Pachycephalosaurus wyomingensis | Herbivore | Late Cretaceous (Maastrichtian, ~70–66 Ma) | Real World / The Lost World: JP / JWE | L: 4.5 m (15 ft)
H: 1.5 m (5 ft) |
450 kg (990 lbs) | Valid
Brown & Schlaikjer, 1943 |
Wyoming, USA
(Hell Creek Fm.) |
"Wore a 10-inch thick solid bone dome bordered by blunt spikes for intra-species head-butting or flank-pushing." |
| Slanted Head | Prenocephale prenes | Herbivore | Late Cretaceous (Campanian–Maastrichtian, ~70 Ma) | Real World | L: 2.4 m (7.9 ft)
H: 0.8 m (2.6 ft) |
130 kg (286 lbs) | Valid
Maryańska & Osmólska, 1974 |
Ömnögovi, Mongolia
(Nemegt Fm.) |
"A complete, high-domed skull lined with a row of small bony tubercles along the back edge." |
| Styx Devil | Stygimoloch spinifer | Herbivore | Late Cretaceous (Maastrichtian, ~66 Ma) | Real World / Jurassic World: Fallen Kingdom | L: 2.3–3 m (7.5–10 ft)
H: 1 m (3.3 ft) |
150–200 kg | Valid / Growth Stage
Galton & Sues, 1983 |
Montana, USA
(Hell Creek Fm.) |
"Features dramatic clusters of long horn spikes jutting from the rear of its skull dome." |
| Wannano Lizard | Wannanosaurus yansiensis | Herbivore | Late Cretaceous (Campanian, ~70 Ma) | Real World | L: 0.6 m (2 ft)
H: 0.2 m (0.7 ft) |
0.5–1 kg | Valid
Lian-Hai, 1977 |
Anhui, China
(Xiaoba Fm.) |
"One of the smallest and most primitive pachycephalosaurs known to science." |
| Parrot Lizard | Psittacosaurus meileyingensis | Herbivore | Early Cretaceous (Aptian, ~123–120 Ma) | Real World | L: 1.5–2 m (5–6.6 ft)
H: 0.6 m (2 ft) |
20–30 kg | Valid
Sereno et al., 1988 |
Liaoning, China
(Jiufotang Fm.) |
"Equipped with a powerful parrot-like beak and quills on its tail; exceptionally abundant across ancient Asia." |
| Dawn Horned Face | Auroraceratops rugosus | Herbivore | Early Cretaceous (Aptian, ~125 Ma) | Real World | L: 1.25–2 m (4–6.6 ft)
H: 0.5 m (1.6 ft) |
15.5 kg (34 lbs) | Valid
You et al., 2005 |
Gansu, China
(Xinminbao Fm.) |
"A small, bipedal basal neoceratopsian with rugose bone texture on its cheeks and jaws." |
| Small Horned Face | Bagaceratops rozhdestvenskyi | Herbivore | Late Cretaceous (Campanian, ~75–70 Ma) | Real World | L: 1 m (3.3 ft)
H: 0.3 m (1 ft) |
22 kg (48 lbs) | Valid
Maryańska & Osmólska, 1975 |
Ömnögovi, Mongolia
(Baruungoyot Fm.) |
"A miniature hornless neoceratopsian possessing a small frill and a beak suited for tough vegetation." |
| Slender Horned Face | Leptoceratops gracilis | Herbivore | Late Cretaceous (Maastrichtian, ~68–66 Ma) | Real World | L: 2 m (6.6 ft)
H: 0.7 m (2.3 ft) |
60–100 kg | Valid
Brown, 1914 |
Alberta, Canada
(Scollard Fm.) |
"A primitive, heavy-jawed neoceratopsian that survived alongside giant ceratopsids at the end of the Cretaceous." |
| Small Horned | Microceratus gobiensis | Herbivore | Late Cretaceous (Santonian, ~85 Ma) | Real World / Jurassic World Dominion | L: 0.6 m (2 ft)
H: 0.25 m (0.8 ft) |
2–5 kg | Valid
Bohlin, 1953 |
Inner Mongolia, China
(Ulansuhai Fm.) |
"An extremely small, bipedal early ceratopsian that relied on swift movement for protection." |
| Montana Horned Face | Montanoceratops cerorhynchus | Herbivore | Late Cretaceous (Maastrichtian, ~70 Ma) | Real World | L: 3 m (10 ft)
H: 1 m (3.3 ft) |
300–400 kg | Valid
Sternberg, 1951 |
Montana, USA
(St. Mary River Fm.) |
"Possessed robust hindlimbs and a short, stout nasal horn structure." |
| First Horned Face | Protoceratops hellenikorhinus | Herbivore | Late Cretaceous (Campanian, ~75–71 Ma) | Real World | L: 1.8–2 m (6–6.6 ft)
H: 0.7 m (2.3 ft) |
60–180 kg | Valid
Lamber et al., 2001 |
Inner Mongolia, China
(Bayan Mandahu Fm.) |
"A sheep-sized herbivore famous for the 'Fighting Dinosaurs' fossil caught in combat with Velociraptor." |
| Pointed Lizard | Centrosaurus apertus | Herbivore | Late Cretaceous (Campanian, ~76.5–75.5 Ma) | Real World / JWE | L: 5–5.5 m (16.5–18 ft)
H: 2 m (6.6 ft) |
1.5–2.3 metric tons | Valid
Lambe, 1904 |
Alberta, Canada
(Dinosaur Park Fm.) |
"Bore a massive single nasal horn curving forward, paired with hooked hooks along the top of its neck frill." |
| Chasm Lizard | Chasmosaurus belli | Herbivore | Late Cretaceous (Campanian, ~76 Ma) | Real World / JWE | L: 4.3–4.8 m (14–16 ft)
H: 1.8 m (6 ft) |
1.5–2 metric tons | Valid
Lambe, 1914 |
Alberta, Canada
(Dinosaur Park Fm.) |
"Features a broad, rectangular frill containing huge open fenestrae to reduce bone weight." |
| Loki's Horned Face | Lokiceratops rangiformis | Herbivore | Late Cretaceous (Campanian, ~78 Ma) | Real World | L: 6.7 m (22 ft)
H: 2 m (6.6 ft) |
5 metric tons | Valid
Lewis et al., 2024 |
Montana, USA
(Judith River Fm.) |
"Adorned with asymmetrical, blade-like curved horns atop its frill, reminiscent of the Norse god's helmet." |
| Large-Nosed Horned Face | Nasutoceratops titusi | Herbivore | Late Cretaceous (Campanian, ~75.5 Ma) | Real World / Battle at Big Rock / JWE | L: 4.5–5 m (15–16.5 ft)
H: 1.5 m (5 ft) |
1.5 metric tons | Valid
Sampson et al., 2013 |
Utah, USA
(Kaiparowits Fm.) |
"Sported long, bull-like brow horns curving forward alongside an enlarged, rounded snout." |
| Thick-Nosed Lizard | Pachyrhinosaurus lakustai | Herbivore | Late Cretaceous (Campanian, ~73.5 Ma) | Real World / Walking with Dinosaurs 3D / JWE | L: 5–8 m (16–26 ft)
H: 2 m (6.6 ft) |
2–4 metric tons | Valid
Fiorillo & Tykoski, 2008 |
Alberta, Canada / Montana, USA
(Wapiti / Hell Creek Fm.) |
"Replaced traditional horns with a massive, flattened bony boss used for battering rivals." |
| Chinese Horned Face | Sinoceratops zhuchengensis | Herbivore | Late Cretaceous (Campanian, ~73 Ma) | Real World / Jurassic World: Fallen Kingdom | L: 6 m (20 ft)
H: 2 m (6.6 ft) |
2 metric tons | Valid
Xu et al., 2010 |
Shandong, China
(Xingezhuang Fm.) |
"A unique Asian centrosaurine bearing a series of forward-curving hornlets along its frill margin." |
| Spiked Lizard | Styracosaurus ovatus | Herbivore | Late Cretaceous (Campanian, ~75 Ma) | Real World / Fantasia / JWE | L: 5.5 m (18 ft)
H: 1.8 m (6 ft) |
2.7 metric tons | Valid
Gilmore, 1930 |
Montana, USA
(Two Medicine Fm.) |
"A striking ceratopsid displaying four to six long, formidable spikes radiating from its neck frill." |
| Perforated Lizard | Torosaurus latus | Herbivore | Late Cretaceous (Maastrichtian, ~68–66 Ma) | Real World / Walking with Dinosaurs / JWE | L: 7.5–9 m (25–30 ft)
H: 2.5 m (8.2 ft) |
4–6 metric tons | Valid
Marsh, 1891 |
Wyoming, USA
(Hell Creek Fm.) |
"Possessed one of the largest skull frills of any known land animal, stretching over 2.6 meters in length." |
| Three-Horned Face | Triceratops horridus | Herbivore | Late Cretaceous (Maastrichtian, ~68–66 Ma) | Real World / Fantasia / JP / JWE | L: 8–9 m (26–30 ft)
H: 2.9–3 m (9.5–10 ft) |
6–12 metric tons | Valid
Marsh, 1889 |
Montana, USA
(Hell Creek Fm.) |
"The classic three-horned defender, wielding solid frill bone and massive brow horns against apex predators." |
Master Thyreophora Field Guide & Catalog
Order: Ornithischia (“bird-hipped” dinosaurs)
Suborder: Thyreophora (“shield bearers”)
Infraorder Stegosauria
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
| Chungking Lizard | Chungkingosaurus jiangbeiensis | Herbivore | Late Jurassic (Oxfordian–Kimmeridgian, ~160–155 Ma) | Real World / JWE | L: 4–5 m (13–16.5 ft)
H: 1.5 m (5 ft) |
1 metric ton | Valid
Dong et al., 1983 |
Chongqing, China
(Upper Shaximiao Fm.) |
"A smaller, early stegosaur sporting sharp, paired thagomizer spikes at the tip of its tail." |
| Giant-Spined Lizard | Gigantspinosaurus sichuanensis | Herbivore | Late Jurassic (Oxfordian, ~160 Ma) | Real World / JWE | L: 4.2–6 m (14–20 ft)
H: 1.6–2 m (5.2–6.6 ft) |
700 kg (1,540 lbs) | Valid
Ouyang, 1992 |
Sichuan, China
(Upper Shaximiao Fm.) |
"Features colossal, shoulder-mounted spines projecting outward like lethal swept-back blades." |
| Spiky Lizard | Kentrosaurus aethiopicus | Herbivore | Late Jurassic (Kimmeridgian, ~155–150 Ma) | Real World / JWE | L: 4.5–5.5 m (15–18 ft)
H: 1.5 m (5 ft) |
1–1.5 metric tons | Valid
Hennig, 1915 |
Lindi Region, Tanzania
(Tendaguru Fm.) |
"Plates along the neck give way to formidable, needle-sharp spikes guarding its rear flank." |
| Miragaia Great Neck | Miragaia longicollum | Herbivore | Late Jurassic (Kimmeridgian–Tithonian, ~150 Ma) | Real World | L: 6–6.5 m (20–21.5 ft)
H: 1.8 m (6 ft) |
2 metric tons | Valid
Mateus et al., 2009 |
Estremadura, Portugal
(Lourinhã Fm.) |
"Possessed an extraordinarily elongated neck formed by 17 vertebrae—unmatched among stegosaurs." |
| Narrow-Faced Roof Lizard | Stegosaurus stenops | Herbivore | Late Jurassic (Kimmeridgian–Tithonian, ~155–150 Ma) | Real World / Fantasia (1940) / JP / JWE | L: 7–10.5 m (23–35 ft)
H: 2.8–5 m (9.2–16.5 ft) |
3.8–5.3 metric tons | Valid
Marsh, 1887 |
Colorado, USA
(Morrison Fm.) |
"The classic roofed lizard; carrying towering alternating plates and a lethal four-spiked tail weapon." |
| Tuo River Lizard | Tuojiangosaurus multispinus | Herbivore | Late Jurassic (Oxfordian–Kimmeridgian, ~160–155 Ma) | Real World / JWE | L: 6.5–7 m (21.5–23 ft)
H: 2 m (6.6 ft) |
2.8 metric tons | Valid
Dong et al., 1977 |
Sichuan, China
(Upper Shaximiao Fm.) |
"Adorned with narrow, tall cone-like plates along its spine and prominent shoulder spines." |
| Limb Lizard | Scelidosaurus harrisonii | Herbivore | Early Jurassic (Sinemurian–Pliensbachian, ~191 Ma) | Real World | L: 4 m (13 ft)
H: 1 m (3.3 ft) |
250 kg (550 lbs) | Valid
Owen, 1859 |
Dorset, England
(Charmouth Mudstone Fm.) |
"An early basal thyreophoran armored with rows of small bony scutes, ancestral to both stegosaurs and ankylosaurs." |
Infraorder Ankylosauria
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
|---|---|---|---|---|---|---|---|---|---|
| Wrinkled Tooth of Edmonton | Edmontonia rugosidens | Herbivore | Late Cretaceous (Campanian, ~76.5–75 Ma) | Real World / JWE | L: 6 m (20 ft)
H: 1.6 m (5.2 ft) |
3 metric tons | Valid
Gilmore, 1930 |
Alberta, Canada
(Dinosaur Park Fm.) |
"A heavy nodosaur featuring forward-pointing shoulder spikes to deter direct frontal attacks." |
| Lorrie McWhinney's Gastonia | Gastonia lorriemcwhinneyae | Herbivore | Early Cretaceous (Barremian, ~125 Ma) | Real World | L: 4.5–5 m (15–16.5 ft)
H: 1.2 m (4 ft) |
1.9 metric tons | Valid
Kinneer et al., 2006 |
Utah, USA
(Cedar Mountain Fm.) |
"Branded with sharp, blade-like pelvic scutes along its flanks to slice at grasping predators." |
| Woven Lizard | Nodosaurus textilis | Herbivore | Late Cretaceous (Cenomanian, ~99–95 Ma) | Real World | L: 4–6 m (13–20 ft)
H: 1.5 m (5 ft) |
1.5 metric tons | Valid
Marsh, 1889 |
Wyoming, USA
(Frontier Fm.) |
"Eponmyous for Nodosauridae; covered in tightly interlocking pebbly armor plates across its back." |
| Edwards' Lizard Shield | Sauropelta edwardsorum | Herbivore | Early Cretaceous (Aptian–Albian, ~115–108 Ma) | Real World / JWE | L: 5.2 m (17 ft)
H: 1.3 m (4.3 ft) |
1.5–2 metric tons | Valid
Ostrom, 1970 |
Montana, USA
(Cloverly Fm.) |
"Distinguished by long neck spines extending outward to form a protective defensive cape." |
| Forest Lizard | Silvisaurus condrayi | Herbivore | Early Cretaceous (Albian, ~110–100 Ma) | Real World | L: 4 m (13 ft)
H: 1 m (3.3 ft) |
1 metric ton | Valid
Eaton, 1960 |
Kansas, USA
(Dakota Fm.) |
"A primitive nodosaur that retained teeth in its upper premaxilla beak region." |
| Ostrich Lizard of Transylvania | Struthiosaurus transylvanicus | Herbivore | Late Cretaceous (Maastrichtian, ~70–66 Ma) | Real World | L: 2–2.2 m (6.6–7.2 ft)
H: 0.7 m (2.3 ft) |
300 kg (660 lbs) | Valid
Nopcsa, 1915 |
Hunedoara, Romania
(Sânpetru Fm.) |
"An insular dwarf nodosaur adapted to the confined habitats of ancient Hateg Island." |
| Fused Lizard | Ankylosaurus magniventris | Herbivore | Late Cretaceous (Maastrichtian, ~68–66 Ma) | Real World / Jurassic Park III / JWE | L: 6–11 m (20–36 ft)
H: 1.7–9 m (5.6–10 ft) |
4.8–8 metric tons | Valid
Brown, 1908 |
Montana, USA
(Hell Creek Fm.) |
"The ultimate living tank; fully encased in heavy osteoderms and wielding a bone-shattering tail club." |
| Well-Armored Head | Euoplocephalus tutus | Herbivore | Late Cretaceous (Campanian, ~76.4–75.6 Ma) | Real World / Jurassic Park (novel) / JWE | L: 5.3–6 m (17.5–20 ft)
H: 1.8 m (6 ft) |
2–2.5 metric tons | Valid
Lambe, 1910 |
Alberta, Canada
(Dinosaur Park Fm.) |
"Possessed armored eyelids and ringed bands of bone shielding its neck and back." |
| Para-Vertebral Minmi | Minmi paravertebral | Herbivore | Early Cretaceous (Aptian, ~120–112 Ma) | Real World / JWE | L: 2–3 m (6.6–10 ft)
H: 0.8 m (2.6 ft) |
300 kg (660 lbs) | Valid
Molnar, 1980 |
Queensland, Australia
(Bungil Fm.) |
"A small Gondwanan ankylosaur featuring unique bony plates reinforcing its belly and spine." |
| Beautiful One | Saichania chulsanensis | Herbivore | Late Cretaceous (Campanian, ~75 Ma) | Real World / JWE | L: 5.2 m (17 ft)
H: 1.5 m (5 ft) |
2 metric tons | Valid
Maryańska, 1977 |
Ömnögovi, Mongolia
(Baruungoyot Fm.) |
"Boasted complex air passages within its reinforced skull to cool air and conserve moisture." |
| Throne Lizard | Scolosaurus thronus | Herbivore | Late Cretaceous (Campanian, ~76.5 Ma) | Real World | L: 6 m (20 ft)
H: 1.5 m (5 ft) |
2 metric tons | Valid
Nopcsa, 1928 |
Alberta, Canada
(Dinosaur Park Fm.) |
"Armed with sharp conical osteoderms along its back and a heavy, clubbed tail tip." |
| Brainy One | Tarchia teresae | Herbivore | Late Cretaceous (Maastrichtian, ~70 Ma) | Real World | L: 5.5–6 m (18–20 ft)
H: 1.8 m (6 ft) |
2.5–3 metric tons | Valid
Penkalski & Tumanova, 2017 |
Ömnögovi, Mongolia
(Nemegt Fm.) |
"One of the largest Asian ankylosaurids, possessing a deeply sculpted skull and massive body armor." |
Master Pterosauria Field Guide & Catalog
Order: Pterosauria ("winged lizards")
Suborder Rhamphorhynchoidea (Basal Long-Tailed Pterosaurs)
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length, Height & Wingspan | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
| Two-Form Tooth | Dimorphodon macronyx | Insectivore / Carnivore | Early Jurassic (Hettangian–Sinemurian, ~195 Ma) | Real World / Jurassic World / JWE | L: 1 m (3.3 ft)
H: 0.4 m (1.3 ft) WS: 1.4 m (4.6 ft) |
1.5–2 kg (3.3–4.4 lbs) | Valid
Owen, 1859 |
Dorset, England
(Blue Lias Fm.) |
"With a oversized, puffin-like skull and contrasting tooth types, it flitted short distances along ancient cliffs." |
| Spear Jaw | Dorygnathus banthensis | Piscivore | Early Jurassic (Toarcian, ~182 Ma) | Real World | L: 1.5 m (5 ft)
H: 0.5 m (1.6 ft) WS: 1.5 m (5 ft) |
2–3 kg (4.4–6.6 lbs) | Valid
Wagner, 1860 |
Baden-Württemberg, Germany
(Posidonia Shale) |
"Armed with long, spear-like front teeth designed to snag slick fish straight out of Jurassic waters." |
| True Two-Form Tooth | Eudimorphodon ranzii | Piscivore / Insectivore | Late Triassic (Norian, ~210 Ma) | Real World | L: 1 m (3.3 ft)
H: 0.3 m (1 ft) WS: 1 m (3.3 ft) |
1 kg (2.2 lbs) | Valid
Zambelli, 1973 |
Lombardy, Italy
(Calcare di Zorzino Fm.) |
"Among the earliest true flying vertebrates, bearing complex multi-cusped teeth designed for crunching prey." |
| Tail-less Jaw | Anurognathus ammoni | Insectivore | Late Jurassic (Tithonian, ~150 Ma) | Real World | L: 9 cm (3.5 in)
H: 5 cm (2 in) WS: 50 cm (20 in) |
40 g (0.09 lbs) | Valid
Döderlein, 1923 |
Bavaria, Germany
(Solnhofen Limestone) |
"A miniature nocturnal flyer with wide, frog-like jaws built for catching insects on the wing." |
| Etches' Beaked Snout | Rhamphorhynchus etchesi | Piscivore | Late Jurassic (Kimmeridgian, ~152 Ma) | Real World / JWE (Genus) | L: 1.2 m (4 ft)
H: 0.4 m (1.3 ft) WS: 1.3 m (4.3 ft) |
2 kg (4.4 lbs) | Valid
O'Sullivan & Martill, 2015 |
Dorset, England
(Kimmeridge Clay Fm.) |
"Featuring forward-pointing needle teeth and a long, rigid tail ending in a diamond-shaped rudder." |
| Tub-Jaw | Scaphognathus crassirostris | Piscivore / Carnivore | Late Jurassic (Kimmeridgian–Tithonian, ~150 Ma) | Real World | L: 0.9 m (3 ft)
H: 0.3 m (1 ft) WS: 0.9 m (3 ft) |
1.2 kg (2.6 lbs) | Valid
Goldfuss, 1831 |
Bavaria, Germany
(Solnhofen Limestone) |
"Distinguished by a broad, blunt snout and relatively large brain structure tailored for acute vision." |
| Hairy / Filamented Fiend | Sordes pilosus | Insectivore / Small Vertebrates | Late Jurassic (Oxfordian–Kimmeridgian, ~160 Ma) | Real World | L: 0.6 m (2 ft)
H: 0.2 m (0.7 ft) WS: 0.6 m (2 ft) |
0.5 kg (1.1 lbs) | Valid
Sharov, 1971 |
Karatau, Kazakhstan
(Karabastau Fm.) |
"A pivotal discovery providing definitive fossilized proof that pterosaurs were covered in thick pycnofibers." |
Suborder Pterodactyloidea (Advanced Short-Tailed Pterosaurs)
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length, Height & Wingspan | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
|---|---|---|---|---|---|---|---|---|---|
| Caiuá Old Wing | Caiuajara dobruskii | Frugivore / Omnivore | Early–Late Cretaceous (Turonian–Coniacian, ~90 Ma) | Real World | L: 1.2 m (4 ft)
H: 0.8 m (2.6 ft) WS: 2.35 m (7.7 ft) |
8 kg (17.6 lbs) | Valid
Manzig et al., 2014 |
Paraná, Brazil
(Goio-Erê Fm.) |
"A sail-crested desert dweller found in dense bonebeds, indicating gregarious colony behavior." |
| Ceará Jaw | Cearadactylus atrox | Piscivore | Early Cretaceous (Aptian–Albian, ~112 Ma) | Real World / Jurassic Park (novel) / JWE | L: 2 m (6.6 ft)
H: 0.9 m (3 ft) WS: 4 m (13 ft) |
15 kg (33 lbs) | Valid
Leonardi & Borgomanero, 1985 |
Ceará, Brazil
(Romualdo Fm.) |
"Armed with an expanded snout tip lined with interlocking, hook-like teeth to snatch slippery fish." |
| George Sternberg's Earth Crest | Geosternbergia sternbergi | Piscivore | Late Cretaceous (Coniacian–Santonian, ~86–83 Ma) | Real World / JWE | L: 3 m (10 ft)
H: 1.8 m (6 ft) WS: 6–7.2 m (20–23.6 ft) |
20–35 kg (44–77 lbs) | Valid
Harksen, 1966 |
Kansas, USA
(Niobrara Chalk Fm.) |
"Famous for its massive, upright bulbous crest that differed dramatically between males and females." |
| Toothless Wing | Pteranodon longiceps | Piscivore | Late Cretaceous (Campanian, ~86–84 Ma) | Real World / Fantasia (1940) / JP III / JWE | L: 2.5–3 m (8.2–10 ft)
H: 1.8 m (6 ft) WS: 5.6–7 m (18.3–23 ft) |
20–50 kg (44–110 lbs) | Valid
Marsh, 1876 |
Kansas, USA
(Niobrara Chalk Fm.) |
"The oceanic soaring icon; toothless with a backward-pointing cranial crest acting as a counter-steer." |
| Lawson's Feathered Serpent | Quetzalcoatlus lawsoni | Carnivore / Generalist | Late Cretaceous (Maastrichtian, ~68–66 Ma) | Real World / JWE (Genus) | L: 13.5 m (44.5 ft)
H: 12.2 m (40.2 ft) WS: 4.5–26 m (15–85.5 ft) |
500,00 kg (110,000 lbs) | Valid
Andres & Langston, 2021 |
Texas, USA
(Javelina Fm.) |
"A smaller cousin to the colossal Q. northropi, adapted for walking terrestrial ground to stalk small prey." |
| Guinainterface Winged South | Pterodaustro guinazui | Filter-Feeder | Early Cretaceous (Aptian, ~122–112 Ma) | Real World / JWE | L: 1.3 m (4.3 ft)
H: 0.5 m (1.6 ft) WS: 2.5 m (8.2 ft) |
5–10 kg (11–22 lbs) | Valid
Bonaparte, 1969 |
San Luis, Argentina
(Lagarcito Fm.) |
"Boasts an upward-curved jaw lined with over a thousand bristle-like teeth used to filter-feed plankton." |
Master Prehistoric Marine Reptiles, Fish & Squamates Catalog
Order Lamniformes & Order Arthrodira
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
| Big Tooth | Otodus megalodon | Carnivore / Macropredator | Early Miocene – Pliocene (~23–3.6 Ma) | Real World / JWE | L: 15–20 m (50–65 ft)
H: 3–4 m (10–13 ft) |
40–60 metric tons | Valid
Agassiz, 1843 |
Worldwide
(Pungo River & Yorktown Fms.) |
"An apex ocean leviathan whose massive serrated teeth could crush through whale bone with absolute ease." |
| Dunkle's Bone | Dunkleosteus amblyodoratus | Carnivore | Late Devonian (Famennian, ~360 Ma) | Real World | L: 4–14.5 m (13–47 ft)
H: 3.2 m (10.2 ft) |
14 metric ton | Valid
Carr & Hlavin, 2010 |
Ohio & Pennsylvania, USA
(Catskill Fm.) |
"An armored placoderm wielding self-sharpening bony plates instead of teeth to shear through prey." |
Order Ichthyosauria
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
| Conybeare's Fish Lizard | Ichthyosaurus conybeari | Piscivore | Early Jurassic (Sinemurian, ~196–190 Ma) | Real World | L: 2–2.5 m (6.6–8.2 ft)
H: 0.6 m (2 ft) |
80–100 kg (176–220 lbs) | Valid
Lydekker, 1888 |
Somerset, England
(Blue Lias Fm.) |
"A streamlined marine swimmer resembling a modern dolphin, perfectly adapted for open-water fish hunts." |
| Huene's Well-Nosed Lizard | Eurhinosaurus huenei | Piscivore | Early Jurassic (Toarcian, ~183–175 Ma) | Real World | L: 6 m (20 ft)
H: 1.2 m (4 ft) |
1 metric ton | Valid
Swinton, 1930 |
Baden-Württemberg, Germany
(Posidonia Shale) |
"Bears an extremely elongated upper jaw reminiscent of a swordfish, lined with needle-like teeth." |
| Eye Lizard of Icenicus | Ophthalmosaurus icenicus | Piscivore | Late Jurassic (Callovian–Tithonian, ~165–150 Ma) | Real World / JWE | L: 4–5 m (13–16.5 ft)
H: 1.2 m (4 ft) |
900–1,000 kg | Valid
Seeley, 1874 |
Peterborough, England
(Oxford Clay Fm.) |
"Equipped with immense, ring-reinforced eyes to track squid in the pitch-black depths of ancient seas." |
Order Plesiosauria
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
| Ribbon Lizard | Elasmosaurus platyurus | Piscivore | Late Cretaceous (Campanian, ~80.5 Ma) | Real World / JWE | L: 10.3–14 m (34–46 ft)
H: 1.5 m (5 ft) |
2–3 metric tons | Valid
Cope, 1868 |
Kansas, USA
(Pierre Shale Fm.) |
"Famous for its absurdly long neck containing 72 vertebrae, which it used to ambush schools of fish." |
| Near Lizard | Plesiosaurus dolichodeirus | Piscivore | Early Jurassic (Sinemurian, ~195 Ma) | Real World / JWE | L: 3.5 m (11.5 ft)
H: 0.8 m (2.6 ft) |
500 kg (1,100 lbs) | Valid
Conybeare, 1824 |
Dorset, England
(Blue Lias Fm.) |
"The foundational paddle-flippered ocean reptile uncovered along the rugged cliffs of Lyme Regis." |
| Kirk's Three-Point Thigh | Trinacromerum kirki | Piscivore | Late Cretaceous (Cenomanian–Turonian, ~93 Ma) | Real World / JWE | L: 3 m (10 ft)
H: 0.7 m (2.3 ft) |
1 metric ton | Valid
Williston, 1906 |
Kansas, USA
(Greenhorn Limestone) |
"A sleek polycotylid built for high-speed underwater sprinting using four powerful, flipper-driven strokes." |
| Attenborough's Lizard | Attenborosaurus conybeari | Piscivore | Early Jurassic (Sinemurian, ~190 Ma) | Real World | L: 5 m (16.5 ft)
H: 1 m (3.3 ft) |
1 metric ton | Valid
Sollas, 1881 / Bakker, 1993 |
Dorset, England
(Charmouth Mudstone Fm.) |
"An early pliosaurid bridging the gap between delicate long-necked swimmers and heavy apex hunters." |
| Queensland's Lizard of Kronos | Kronosaurus queenslandicus | Carnivore / Macropredator | Early Cretaceous (Aptian–Albian, ~120–100 Ma) | Real World / JWE | L: 9–10.5 m (30–34.5 ft)
H: 2 m (6.6 ft) |
10–11 metric tons | Valid
Longman, 1924 |
Queensland, Australia
(Toolebuc Fm.) |
"Named after the titan who devoured his own children; a crushing predator with jaws over two meters long." |
| Smooth-Sided Tooth | Liopleurodon ferox | Carnivore / Macropredator | Middle–Late Jurassic (Callovian–Kimmeridgian, ~166–155 Ma) | Real World / JWE | L: 5–7 m (16.5–23 ft)
H: 1.5 m (5 ft) |
1–1.7 metric tons | Valid
Sauvage, 1873 |
Cambridgeshire, England
(Oxford Clay Fm.) |
"An ambush stalker of Jurassic seas whose four flippers granted unmatched maneuverability." |
Order Squamata (Snakes and Lizards)
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
|---|---|---|---|---|---|---|---|---|---|
| Key Shield | Clidastes propython | Piscivore / Carnivore | Late Cretaceous (Campanian, ~80 Ma) | Real World | L: 2–4 m (6.6–13 ft)
H: 0.5 m (1.6 ft) |
150 kg (330 lbs) | Valid
Cope, 1869 |
Alabama, USA
(Mooreville Chalk Fm.) |
"One of the agile, early mosasaurs that hunted in shallow coastal waterways with undulating tail strokes." |
| Walhalla Midgard Serpent | Jormungandr walhallaensis | Carnivore | Late Cretaceous (Campanian, ~80 Ma) | Real World | L: 7 m (23 ft)
H: 1.2 m (4 ft) |
1 metric ton | Valid
Zietlow et al., 2023 |
North Dakota, USA
(Pierre Shale Fm.) |
"Named after the legendary Norse sea serpent, representing an intermediate evolutionary link in mosasaur lineages." |
| Beauge's Meuse River Lizard | Mosasaurus beaugei | Carnivore / Macropredator | Late Cretaceous (Maastrichtian, ~70–66 Ma) | Real World / JW / JWE (Genus) | L: 10–21 m (33–69.5 ft)
H: 3.8 m (10.8 ft) |
5–8 metric tons | Valid
Arambourg, 1952 |
Khouribga, Morocco
(Ouled Abdoun Basin) |
"A massive top marine squamate whose double-hinged jaw and paddle limbs made it master of Late Cretaceous seas." |
| Ancient Great Roamer | Megalania priscus (Varanus priscus) | Carnivore / Apex Predator | Pleistocene (~50,000–40,000 years ago) | Real World | L: 5.5–7 m (18–23 ft)
H: 1.1–1.3 m (3.6–4.3 ft) |
575–1,940 kg | Valid
Owen, 1859 |
Queensland, Australia
(Darling Downs) |
"A giant relative of the Komodo dragon that terrorized Pleistocene Australia with venomous, serrated bites." |
Master Synapsida & Mammaliaform Catalog
Clade: Synapsids ("stem-mammals" and early mammal relatives)
Order Pelycosauria (Basal Synapsids)
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
| Large Two-Measure Tooth | Dimetrodon grandis | Carnivore / Apex Predator | Early Permian (Artinskian–Kungurian, ~280–270 Ma) | Real World / Fantasia (1940) / Dominion / JWE | L: 3.2–4 m (10.5–13 ft)
H: 1.5–1.8 m (5–6 ft) |
230–250 kg (500–550 lbs) | Valid
Case, 1907 |
Texas & Oklahoma, USA
(Arroyo Fm., Clear Fork Group) |
"Often mistaken for a dinosaur, this sail-backed stem-mammal dominated land long before the age of reptiles." |
Order Therapsida & Order Didelphimorphia (Non-Mammalian Therapsids & Early Metatherians)
| Meaning | Species | Diet | Epoch / Stage / Years | Origin (Franchise) | Est. Length & Height | Weight | Collected / Status | Locality & Formation | Yen Sid's Comments |
| Curved Shovel Lizard | Lystrosaurus curvatus | Herbivore | Late Permian – Early Triassic (Changhsingian–Induan, ~252–251 Ma) | Real World / Dominion / JWE (Genus) | L: 0.9–1.2 m (3–4 ft)
H: 0.5 m (1.6 ft) |
50–90 kg (110–200 lbs) | Valid
Owen, 1876 |
Karoo Basin, South Africa
(Balfour & Katberg Fms.) |
"A tough, tusked burrower that famously survived the Permian mass extinction to dominate the Triassic world." |
| Bulba Lizard (Leaf-Razor) | Bulbasaurus phylloxyron | Herbivore | Late Permian (Wuchiapingian, ~259–254 Ma) | Real World | L: 0.8–1 m (2.6–3.3 ft)
H: 0.35 m (1.1 ft) |
15–25 kg (33–55 lbs) | Valid
Kammerer & Smith, 2017 |
Eastern Cape, South Africa
(Abrahamskraal Fm., Karoo) |
"An early dicynodont boasting bulbous nasal bosses and sharp keratinous beak sheaths." |
| Halley's First Tooth | Alphadon halleyi | Insectivore / Omnivore | Late Cretaceous (Maastrichtian, ~68–66 Ma) | Real World | L: 30 cm (12 in)
H: 8 cm (3.1 in) |
300–500 g (0.7–1.1 lbs) | Valid
Simpson, 1927 |
Alberta, Canada & Montana, USA
(Hell Creek Fm.) |
"A tiny, opossum-like marsupial ancestor that scurried beneath the feet of giant Maastrichtian dinosaurs." |
