Pterosauria

This is a basic classification of pterosaurs, which were flying reptiles of the Mesozoic era. Here's a quick breakdown:

Suborder Rhamphorhynchoidea (Primitive, Long-Tailed Pterosaurs)

These were earlier pterosaurs, typically smaller, with long tails and toothed jaws.
Dimorphodontidae: Dimorphodon – A small, robust pterosaur with a short face and large head.
Eudimorphodontidae: Eudimorphodon – Among the earliest known pterosaurs.
Rhamphorhynchidae:
- Anurognathus – A short-faced insectivore.
- Rhamphorhynchus – A well-known long-tailed pterosaur with a diamond-shaped tail vane.
- Scaphognathus – A small pterosaur with a broad skull.
- Sordes – A pterosaur that showed evidence of a furry body covering (pycnofibers).

Suborder Pterodactyloidea (Advanced, Short-Tailed Pterosaurs)

These had shorter tails, larger wingspans, and often toothless beaks.
Dsungaripteridae: Dsungaripterus – A robust, land-walking pterosaur with strong jaws.
Pterodaustriidae: Pterodaustro – A filter-feeding pterosaur with bristle-like teeth.
Pterodactylidae:
- Cearadactylus – A crested pterosaur from Brazil.
- Pterodactylus – One of the first pterosaurs discovered and named.
Ornithocheiridae:
- Pteranodon – A large, mostly toothless pterosaur with a distinctive crest.
- Quetzalcoatlus – One of the largest known flying animals, possibly capable of ground hunting.

Saurischia

This classification covers Coelurosauria, a diverse group of theropod dinosaurs known for being generally lighter, faster, and more bird-like than other theropods. Here’s a breakdown of the families listed:

Infraorder Coelurosauria (Light, Fast Theropods)

Family Podokesauridae (Early, Small Theropods)}}

Coelophysis – One of the earliest known theropods, a slender, fast predator.
Procompsognathus – A small, lightly built carnivore.
Saltopus – A tiny, primitive dinosaur-like reptile, possibly more closely related to early dinosaurs than true theropods.

Family Coeluridae (Small, Bipedal Predators)

Coelurus – A lightly built, long-limbed theropod from the Late Jurassic.
Moros – One of the smallest known relatives of Tyrannosaurus, an early Cretaceous coelurosaur.

Family Compsognathidae (Tiny, Fast Hunters)

Compsognathus – A small, chicken-sized theropod, one of the best-known from complete fossils.

Family Ornithomimidae ("Ostrich-Mimic" Dinosaurs)

Dromiceiomimus – A swift, ostrich-like dinosaur from North America.
Elaphrosaurus – A lightly built, long-necked theropod from the Late Jurassic.
Gallimimus – One of the largest ornithomimids, known from Mongolia.
Ornithomimus – A classic example of an ostrich-mimic dinosaur.
Struthiomimus – Similar to Ornithomimus, with adaptations for fast running.

Family Deinocheiridae (Giant, Weird Ornithomimosaurs)

Deinocheirus – A bizarre, hump-backed dinosaur with huge arms and a diet likely including plants and small animals.

Family Oviraptoridae (Beaked, Possibly Omnivorous Theropods)

Oviraptor – A small theropod once thought to steal eggs but later found to be a protective parent.

Family Saurornithoididae (Troodontids, Small, Smart Predators)

Saurornithoides – A small, bird-like, possibly intelligent theropod.
Stenonychosaurus – Sometimes considered the same as Troodon, a theropod known for its large brain-to-body ratio.

Family Therizinosauridae (Strange, Clawed Herbivores)

Therizinosaurus – A massive, slow-moving herbivore with enormous claws, likely used for defense or feeding.

Infraorder Deinonychosauria (Raptor-like Dinosaurs with Sickle Claws)

Deinonychosaurs were a group of bird-like theropods known for their distinctive sickle-shaped claws on their second toes, which were likely used for hunting and grasping prey.

Family Dromaeosauridae (True Raptors)

Deinonychus – One of the most famous dromaeosaurs, this North American predator played a key role in reshaping the image of dinosaurs as active, intelligent, and possibly feathered.
Saurornitholestes – A smaller, fast-moving dromaeosaur from the Late Cretaceous of North America, closely related to Velociraptor.
Utahraptor – The largest known dromaeosaur, reaching up to 7 meters (23 feet) in length. It lived during the Early Cretaceous and was an apex predator.
Velociraptor – One of the most well-known dinosaurs, made famous by Jurassic Park. It was a small but intelligent predator, likely covered in feathers.

Infraorder Ceratosauria

Ceratosaurs were a group of theropod dinosaurs that were generally more primitive than later theropods like allosaurs and tyrannosaurs. They often had distinctive cranial ornamentation, such as horns or crests, and were common in the Jurassic and Cretaceous periods.

Family Ceratosauridae (Horned Theropods)

Ceratosaurus – A medium-sized theropod from the Late Jurassic, distinguished by its prominent nasal horn and rows of osteoderms (bony plates) along its back. It was a versatile predator that likely hunted small to medium-sized prey and possibly scavenged.

Infraorder Carnosauria (Large Predatory Theropods)

Carnosaurs were large, powerful theropods that dominated many ecosystems during the Jurassic and Cretaceous periods. They typically had large skulls, strong jaws, and sharp teeth suited for hunting large prey.

Family Megalosauridae (Early Large Theropods, Includes Spinosaur Relatives)

Dilophosaurus – A medium-sized, early Jurassic predator with distinctive twin crests on its skull. It was one of the first large theropods.
Eustreptospondylus – A Middle Jurassic theropod from Europe, known from a well-preserved skeleton.
Giganotosaurus – One of the largest known theropods, this Late Cretaceous predator from South America may have rivaled Tyrannosaurus in size. However, it is often classified in Carcharodontosauridae rather than Megalosauridae.
Proceratosaurus – A small, early theropod from the Middle Jurassic, believed to be an early relative of tyrannosaurs rather than a true megalosaurid.

Family Allosauridae (Classic Jurassic Apex Predators)

Allosaurus – The dominant predator of the Late Jurassic, often compared to a smaller Tyrannosaurus. It had powerful claws and an articulated skull for gripping prey.
Yangchuanosaurus – A large theropod from the Late Jurassic of China, similar in size and role to Allosaurus.

Family Spinosauridae (Fish-Eating, Semi-Aquatic Theropods)

Acrocanthosaurus – A large theropod with a tall-spined back from the Early Cretaceous of North America. While often associated with allosaurs, some studies suggest links to carcharodontosaurs.
Spinosaurus – One of the largest carnivorous dinosaurs, possibly semi-aquatic, with a distinctive sail-like structure on its back. It likely hunted fish and other aquatic prey.

Family Tyrannosauridae (Large, Late Cretaceous Apex Predators)

Albertosaurus – A smaller, more lightly built relative of Tyrannosaurus, known from Canada.
Alioramus – A long-snouted tyrannosaur from Asia, possibly adapted for a different hunting strategy than its more robust relatives.
Daspletosaurus – A heavily built, close relative of Tyrannosaurus, possibly a direct ancestor.
Tarbosaurus – The Asian counterpart to Tyrannosaurus, with a slightly narrower skull.
Tyrannosaurus – The most famous theropod, an apex predator of the Late Cretaceous, with massive jaws, thick teeth, and powerful bite force.

Infraorder Prosauropoda (Early, Smaller, Bipedal to Semi-Quadrupedal Ancestors of Sauropods)

Prosauropods were the predecessors of the massive sauropods, typically smaller, with long necks, and capable of both bipedal and quadrupedal movement.

Family Anchisauridae (Small to Medium Prosauropods)

Anchisaurus – A small, early Jurassic prosauropod that was one of the first dinosaurs to show adaptations for a more plant-based diet.
Efraasia – A late Triassic prosauropod from Europe, an early member of the lineage leading to sauropods.
Thecodontosaurus – One of the earliest known dinosaurs, a small, agile herbivore from the Late Triassic.

Family Plateosauridae (Larger, More Derived Prosauropods)

Massospondylus – A well-known Early Jurassic prosauropod with a long neck, possibly capable of facultative quadrupedalism.
Mussaurus – Known from hatchling fossils, this small Triassic prosauropod grew significantly larger in adulthood.
Plateosaurus – One of the best-known prosauropods, abundant in Late Triassic Europe, capable of rearing up on its hind legs.

Family Melanorosauridae (Transition Between Prosauropods and Sauropods)

Riojasaurus – A robust, quadrupedal prosauropod, hinting at the shift toward fully quadrupedal sauropods.

Infraorder Sauropoda (Large, Fully Quadrupedal, Long-Necked Dinosaurs)

Sauropods were the largest land animals ever, with massive bodies, long necks, and pillar-like legs.

Family Cetiosauridae (Early, Medium-Sized Sauropods)

Barapasaurus – A primitive, early Jurassic sauropod from India.
Cetiosaurus – Known as the “whale lizard,” an early sauropod from the Middle Jurassic of Europe.

Family Brachiosauridae (Long-Limbed, High-Browsing Sauropods)

Brachiosaurus – One of the most famous sauropods, with long forelimbs, allowing it to feed higher in trees.
Sauroposeidon – Possibly the tallest sauropod, with neck vertebrae over a meter long, from North America.

Family Camarasauridae (Stocky, Shorter-Necked Sauropods)

Camarasaurus – One of the most common North American sauropods, with a boxy skull and strong teeth.
Euhelopus – A Chinese sauropod with unusual forward-facing nostrils.
Opisthocoelicaudia – A late Cretaceous titanosaur-like sauropod from Mongolia, possibly closely related to titanosaurs.

Family Diplodocidae (Long, Whip-Tailed Sauropods)

Apatosaurus – A heavily built diplodocid once confused with Brontosaurus.
Dicraeosaurus – A short-necked diplodocid with tall neural spines.
Diplodocus – One of the longest dinosaurs, with an extremely elongated neck and tail.
Mamenchisaurus – A Chinese sauropod with one of the longest necks of any known dinosaur.
Supersaurus – One of the longest sauropods, with estimates suggesting it could reach over 33 meters (108 feet).

Family Titanosauridae (Giant, Widespread, Cretaceous Sauropods)

Alamosaurus – A large North American titanosaur from the Late Cretaceous.
Dreadnoughtus – One of the most massive land animals known from well-preserved fossils.
Saltasaurus – A smaller, armored titanosaur with bony osteoderms for defense.

Ornithischia

Infraorder Ornithopoda (Bipedal to Quadrupedal Herbivorous Dinosaurs)

Ornithopods were a diverse group of herbivorous dinosaurs that evolved from small, fast runners into some of the largest and most successful herbivores of the Mesozoic.

Family Fabrosauridae (Small, Early Ornithopods)

Lesothosaurus – A lightly built, bipedal herbivore from the Early Jurassic of Africa, one of the most primitive ornithischians.
Scutellosaurus – Though listed here, Scutellosaurus is usually classified as an early armored dinosaur (thyreophoran), rather than an ornithopod.

Family Heterodontosauridae (Small, Fang-Toothed Herbivores/Omnivores)

Echinodon – A small, early ornithischian dinosaur from the Early Cretaceous of Europe, sometimes considered a basal thyreophoran (armored dinosaur).
Heterodontosaurus – A small dinosaur from the Early Jurassic of South Africa, with a mix of teeth suggesting an omnivorous diet.
Pisanosaurus – A Late Triassic dinosaur from South America, often considered the earliest known ornithischian, though its classification is debated.

Family Hypsilophodontidae (Small, Agile Ornithopods)

Callovosaurus – One of the oldest known iguanodontians, from the Middle Jurassic of Europe.
Dryosaurus – A fast-running, lightly built herbivore from the Late Jurassic of North America and Africa.
Hypsilophodon – A small, bipedal herbivore from the Early Cretaceous of Europe, once thought to be arboreal.
Nanosaurus – A small Late Jurassic ornithopod from North America, originally confused with Othnielia.
Parksosaurus – A small Late Cretaceous dinosaur from North America, similar to Thescelosaurus.
Thescelosaurus – A robust, possibly facultatively quadrupedal ornithopod from the Late Cretaceous of North America.

Family Iguanodontidae (Medium to Large Ornithopods, Precursors to Hadrosaurs)

Camptosaurus – A Late Jurassic ornithopod from North America and Europe, with some features linking it to later hadrosaurs.
Iguanodon – One of the first dinosaurs ever discovered, a large, thumb-spiked herbivore from the Early Cretaceous of Europe and North Africa.
Muttaburrasaurus – A large ornithopod from Early Cretaceous Australia, with a distinctive domed snout.
Ouranosaurus – A sail-backed ornithopod from Early Cretaceous Africa, showing convergent evolution with Spinosaurus.
Probactrosaurus – A transitional ornithopod from the Early Cretaceous of Asia, closely related to hadrosaurs.
Tenontosaurus – A large, long-tailed ornithopod from North America, frequently found with evidence of predation by Deinonychus.

Family Hadrosauridae (Duck-Billed Dinosaurs, Highly Successful Late Cretaceous Ornithopods)

Hadrosaurids evolved advanced chewing adaptations, strong social structures, and in some cases, elaborate cranial crests.

Subfamily Hadrosaurinae (Flat-Headed Hadrosaurs)

Bactrosaurus – A basal hadrosaur from the Late Cretaceous of Asia, showing early features of the group.
Edmontosaurus – One of the largest hadrosaurs, known from North America, potentially reaching up to 15 meters (50 feet) in length.
Hadrosaurus – The first dinosaur to be formally named in North America, from the Late Cretaceous of New Jersey.
Kritosaurus – A hadrosaur from North America and possibly South America, known for its bumpy snout.
Maiasaura – Famous for evidence of parental care, it lived in large nesting colonies in North America.
Prosaurolophus – A medium-sized hadrosaur from North America, closely related to Saurolophus.
Saurolophus – A hadrosaur known from both North America and Asia, featuring a backward-pointing crest.
Shantungosaurus – The largest known hadrosaur, potentially over 16 meters (52 feet) long, from the Late Cretaceous of China.

Subfamily Lambeosaurinae (Crested Hadrosaurs)

Corythosaurus – A North American hadrosaur with a helmet-like crest, likely used for communication.
Hypacrosaurus – A large, Late Cretaceous North American hadrosaur with a tall, hollow crest.
Lambeosaurus – A well-known crested hadrosaur from North America, with a forward-curving crest.
Olorotitan – A highly crested hadrosaur from Late Cretaceous Russia, known for its elongated skull crest.
Parasaurolophus – One of the most recognizable dinosaurs, with a long, backward-curving tube-like crest, possibly used for sound production.
Tsintaosaurus – A Chinese hadrosaur once thought to have a unicorn-like horn, now understood to have a crest similar to Lambeosaurus.

Infraorder Ceratopia (Horned and Frilled Dinosaurs)

Ceratopians were a diverse group of herbivorous dinosaurs known for their parrot-like beaks and frills, with later members developing large horns.

Family Pachycephalosauridae (Dome-Headed Dinosaurs)

Pachycephalosaurs were bipedal dinosaurs with thick skull domes, possibly used for headbutting behavior.

Homalocephale – A flat-headed pachycephalosaur from the Late Cretaceous of Mongolia, possibly a juvenile form of Prenocephale.
Pachycephalosaurus – The largest known pachycephalosaur, from Late Cretaceous North America, with a massive, thick skull dome.
Prenocephale – A smaller, dome-headed dinosaur from Mongolia, related to Pachycephalosaurus.
Stegoceras – A medium-sized pachycephalosaur from North America, known from well-preserved skulls.

Family Psittacosauridae (Early Ceratopsians, Parrot-Beaked Dinosaurs)

Psittacosaurs were small, bipedal herbivores with strong beaks, forming the early branches of ceratopsian evolution.

Psittacosaurus – One of the most well-documented dinosaurs, with dozens of species from the Early Cretaceous of Asia, some with quill-like structures on the tail.

Family Protoceratopidae (Small, Early Frilled Ceratopsians)

These were transitional ceratopsians, showing the development of frills and more robust bodies.

Bagaceratops – A small, Late Cretaceous ceratopsian from Mongolia, closely related to Protoceratops.
Leptoceratops – A stocky, small ceratopsian from Late Cretaceous North America, possibly capable of both bipedal and quadrupedal movement.
Microceratus – One of the smallest ceratopsians, from the Late Cretaceous of Mongolia, once called Microceratops.
Montanoceratops – A North American protoceratopsian with a slightly more developed frill.
Protoceratops – A well-known early ceratopsian from Mongolia, famous for its possible link to the origins of griffin myths.

Family Ceratopidae (Large Horned Dinosaurs with Well-Developed Frills)

Ceratopids were the most advanced ceratopsians, ranging from short-frilled centrosaurines to long-frilled chasmosaurines.

Subfamily Centrosaurinae (Short-Frilled, Often More Ornamented Ceratopsians)

Anchiceratops – A long-frilled ceratopsian with small horns, from Late Cretaceous Canada.
Arrhinoceratops – A rare ceratopsian with a distinctive nasal ornament, from Canada.
Centrosaurus – A well-studied centrosaurine with a short frill and large nasal horn, from North America.
Nasutoceratops – A unique, long-snouted ceratopsian with forward-facing horns, from Utah.
Pachyrhinosaurus – A ceratopsian with a thickened, bumpy skull instead of traditional horns, possibly for ramming behavior.
Styracosaurus – A striking ceratopsian with a large nasal horn and long spikes extending from its frill.

Subfamily Chasmosaurinae (Large, Long-Frilled Ceratopsians)

Chasmosaurus – A long-frilled ceratopsian from Canada, with a relatively small brow horn.
Pentaceratops – A massive ceratopsian with one of the largest frills of any dinosaur, from New Mexico.
Torosaurus – Once debated as a mature form of Triceratops, it had an extremely long frill with large openings.
Triceratops – One of the most famous dinosaurs, with large brow horns and a solid frill, among the last non-avian dinosaurs to exist.

Infraorder Stegosauria (Plated Dinosaurs with Tail Spikes)

Stegosaurs were herbivorous dinosaurs characterized by rows of bony plates along their backs and spiked tails (thagomizers) used for defense.

Family Stegosauridae (Plated Dinosaurs)

Kentrosaurus – A smaller, spike-covered stegosaur from the Late Jurassic of Africa, with a mix of plates and spikes.
Stegosaurus – The most famous stegosaur, from the Late Jurassic of North America, with large, alternating plates and a powerful thagomizer.
Tuojiangosaurus – A Chinese stegosaur from the Late Jurassic, resembling Stegosaurus, but with a lower, more compact body.
Wuerhosaurus – One of the last known stegosaurs, from the Early Cretaceous of China, with a more flattened body compared to earlier relatives.

Infraorder Ankylosauria (Heavily Armored Dinosaurs, Some with Clubbed Tails)

Ankylosaurs were quadrupedal herbivores with extensive body armor, evolving into two main groups: nodosaurs (without tail clubs) and ankylosaurs (with tail clubs).

Family Scelidosauridae (Early Armored Dinosaurs)

A transitional family between small, bipedal ornithischians and heavily armored ankylosaurs.

Scelidosaurus – An early armored dinosaur from the Early Jurassic of England, sometimes considered a basal ankylosaur or thyreophoran.

Family Nodosauridae (Armored Dinosaurs Without Tail Clubs)

Nodosaurs lacked tail clubs but had extensive bony armor, spines, and large shoulder spikes for defense.

Hylaeosaurus – One of the first dinosaurs ever discovered, from Early Cretaceous England, possibly with large shoulder spikes.
Nodosaurus – A medium-sized nodosaur from North America, known mostly from fragmentary remains.
Panoplosaurus – A heavily armored nodosaur from the Late Cretaceous of North America, with an elongated body and small head.
Polacanthus – A European nodosaur with an extensive shield of fused armor over its hips.
Sauropelta – A well-armored nodosaur from North America with large shoulder spikes for defense.
Silvisaurus – A smaller nodosaur from North America, with a relatively short snout and robust armor.
Struthiosaurus – A small, lightly built nodosaur from Europe, one of the smallest known armored dinosaurs.

Family Ankylosauridae (Armored Dinosaurs with Tail Clubs)

Ankylosaurs evolved powerful tail clubs, reinforced skulls, and extensive bony armor for defense.

Ankylosaurus – The largest and most famous ankylosaur, from Late Cretaceous North America, with thick armor and a massive tail club.
Euoplocephalus – A well-known North American ankylosaur with a large tail club, armored eyelids, and robust limbs.
Saichania – A heavily built ankylosaur from Mongolia, adapted to arid conditions.
Talarurus – A relatively small Mongolian ankylosaur with a clubbed tail and lighter armor than Ankylosaurus.'

Size Comparison

Pterosauria

Here are the estimated sizes for the listed pterosaur species:

Suborder: Rhamphorhynchoidea

Family: Dimorphodontidae

Dimorphodon macronyx – Wingspan: ~1.4 meters (4.6 feet), Body length: ~1 meter (3.3 feet) Early Jurassic (~195 Mya), England

Family: Eudimorphodontidae

Eudimorphodon ranzii – Wingspan: ~1 meter (3.3 feet), Body length: ~0.7 meters (2.3 feet) Late Triassic (~210 Mya), Italy

Family: Rhamphorhynchidae

Anurognathus ammoni – Wingspan: ~0.5 meters (1.6 feet), Body length: ~0.2 meters (8 inches) Late Jurassic (~150 Mya), Germany
Rhamphorhynchus etchesi – Wingspan: ~1.8 meters (5.9 feet), Body length: ~1 meter (3.3 feet) Late Jurassic (~150 Mya), England
Scaphognathus crassirostris – Wingspan: ~1 meter (3.3 feet), Body length: ~0.8 meters (2.6 feet) Late Jurassic (~150 Mya), Germany
Sordes pilosus – Wingspan: ~0.6 meters (2 feet), Body length: ~0.4 meters (1.3 feet) Late Jurassic (~150 Mya), Kazakhstan

Suborder: Pterodactyloidea

Family: Dsungaripteridae

Dsungaripterus weii – Wingspan: ~3.5 meters (11.5 feet), Body length: ~1.5 meters (4.9 feet) Early Cretaceous (~125 Mya), China

Family: Pterodaustriidae

Arthurdactylus conandoylei – Wingspan: ~4.6 meters (15 feet), Body length: ~2 meters (6.6 feet) Early Cretaceous (~110 Mya), Brazil
Pterodaustro guinazui – Wingspan: ~2.5–3 meters (8.2–9.8 feet), Body length: ~1.2 meters (3.9 feet) Early Cretaceous (~105 Mya), Argentina

Family: Ornithocheiridae

Pteranodon sternbergi – Wingspan: ~7 meters (23 feet), Body length: ~3.5 meters (11.5 feet) Late Cretaceous (~86–84 Mya), USA (Kansas)
Quetzalcoatlus lawsoni – Wingspan: ~10–14.50 meters (33–47.6 feet), Body length: ~6 meters (19.7 feet) Late Cretaceous (~70–66 Mya), USA (Texas)

Would you like additional details or comparisons with other flying reptiles?

Saurischia

Here are the estimated sizes for the listed theropod species:

Suborder: Theropoda (Carnivorous Dinosaurs)

Infraorder: Coelurosauria

Family: Podokesauridae

Coelophysis bauri – Length: ~3 meters (10 feet), Height: ~1 meter (3.3 feet), Weight: ~20 kg (44 lbs) Late Triassic (~225 Mya), USA (New Mexico)
Procompsognathus triassicus – Length: ~1 meter (3.3 feet), Height: ~0.4 meters (1.3 feet), Weight: ~1 kg (2.2 lbs) Late Triassic (~210 Mya), Germany
Saltopus elginensis – Length: ~0.6 meters (2 feet), Height: ~0.25 meters (10 inches), Weight: ~1 kg (2.2 lbs) Late Triassic (~225 Mya), Scotland

Family: Coeluridae

Coelurus fragilis – Length: ~2.5 meters (8 feet), Height: ~1 meter (3.3 feet), Weight: ~20 kg (44 lbs) Late Jurassic (~150 Mya), USA (Western USA)
Moros intrepidus – Length: ~3 meters (10 feet), Height: ~1.2 meters (4 feet), Weight: ~78 kg (172 lbs) Late Jurassic (~150 Mya), North America

Family: Compsognathidae

Compsognathus longipes – Length: ~1.4 meters (4.6 feet), Height: ~0.4 meters (1.3 feet), Weight: ~3 kg (6.6 lbs) Late Jurassic (~150 Mya), Germany, France

Family: Ornithomimidae

Dromiceiomimus samueli – Length: ~3.5 meters (11.5 feet), Height: ~1.5 meters (5 feet), Weight: ~100 kg (220 lbs) Late Cretaceous (~70 Mya), North America
Gallimimus bullatus – Length: ~6 meters (20 feet), Height: ~2 meters (6.6 feet), Weight: ~440 kg (970 lbs) Late Cretaceous (~70 Mya), Mongolia
Ornithomimus velox – Length: ~3.5 meters (11.5 feet), Height: ~1.5 meters (5 feet), Weight: ~100 kg (220 lbs) Late Cretaceous (~70 Mya), North America
Struthiomimus altus – Length: ~4.3 meters (14 feet), Height: ~1.8 meters (6 feet), Weight: ~150 kg (330 lbs) Late Cretaceous (~70 Mya), North America

Family: Deinocheiridae

Deinocheirus mirificus – Length: ~11 meters (36 feet), Height: ~3.6 meters (12 feet), Weight: ~6,000 kg (13,200 lbs) Late Cretaceous (~70 Mya), Mongolia

Family: Oviraptoridae

Oviraptor philoceratops – Length: ~1.5 meters (5 feet), Height: ~0.8 meters (2.6 feet), Weight: ~15 kg (33 lbs) Late Cretaceous (~75 Mya), Mongolia

Family: Therizinosauridae

Therizinosaurus cheloniformis – Length: ~10 meters (33 feet), Height: ~5 meters (16 feet), Weight: ~5,000 kg (11,000 lbs) Late Cretaceous (~70 Mya), Mongolia

Infraorder: Coelurosauria, Deinonychosauria

Family: Saurornithoididae

Stenonychosaurus inequalis – Length: ~2.5 meters (8 feet), Height: ~1 meter (3.3 feet), Weight: ~50 kg (110 lbs) Late Cretaceous (~75 Mya), North America
Troodon formosus – Length: ~2.4 meters (7.9 feet), Height: ~1 meter (3.3 feet), Weight: ~50 kg (110 lbs) Late Cretaceous (~75 Mya), North America

Family: Dromaeosauridae

Bambiraptor feinbergi – Length: ~1 meter (3.3 feet), Height: ~0.5 meters (1.6 feet), Weight: ~2 kg (4.4 lbs) Late Cretaceous (~75 Mya), North America
Deinonychus antirrhopus – Length: ~3.4 meters (11 feet), Height: ~1.2 meters (4 feet), Weight: ~100 kg (220 lbs) Early Cretaceous (~115 Mya), North America
Dromaeosaurus albertensis – Length: ~2 meters (6.6 feet), Height: ~1 meter (3.3 feet), Weight: ~15 kg (33 lbs) Late Cretaceous (~75 Mya), Canada
Saurornitholestes sullivani – Length: ~2 meters (6.6 feet), Height: ~0.8 meters (2.6 feet), Weight: ~15 kg (33 lbs) Late Cretaceous (~75 Mya), North America
Velociraptor osmolskae – Length: ~2.1 meters (7 feet), Height: ~0.5 meters (1.6 feet), Weight: ~15 kg (33 lbs) Late Cretaceous (~75 Mya), Mongolia

Order: Archaeopterygiformes

Archaeopteryx albersdoerferi – Wingspan: ~0.5 meters (1.6 feet), Body length: ~0.5 meters (1.6 feet), Weight: ~1 kg (2.2 lbs) Late Jurassic (~150 Mya), Germany

Infraorder: Ceratosauria

Family: Ceratosauridae

Ceratosaurus nasicornis – Length: ~6 meters (20 feet), Height: ~2 meters (6.6 feet), Weight: ~980 kg (2,160 lbs) Late Jurassic (~150 Mya), North America, Europe
Dilophosaurus wetherilli – Length: ~7 meters (23 feet), Height: ~2.5 meters (8.2 feet), Weight: ~400 kg (880 lbs) Early Jurassic (~193 Mya), North America
Elaphrosaurus bambergi – Length: ~6.2 meters (20.3 feet), Height: ~1.5 meters (5 feet), Weight: ~210 kg (460 lbs) Late Jurassic (~150 Mya), Tanzania

Infraorder: Carnosauria

Family: Megalosauridae

Eustreptospondylus oxoniensis – Length: ~5 meters (16.4 feet), Height: ~1.5 meters (5 feet), Weight: ~500 kg (1,100 lbs) Middle Jurassic (~165 Mya), England
Giganotosaurus carolinii – Length: ~15.5 meters (50.9 feet), Height: ~5.34 meters (17.5 feet), Weight: ~8,000 kg (17,600 lbs) Late Cretaceous (~98 Mya), Argentina
Poekilopleuron bucklandii – Length: ~9 meters (30 feet), Height: ~3 meters (10 feet), Weight: ~1,500 kg (3,300 lbs) Early Jurassic (~190 Mya), England
Proceratosaurus bradleyi – Length: ~3 meters (10 feet), Height: ~1 meter (3.3 feet), Weight: ~100 kg (220 lbs) Late Jurassic (~160 Mya), England

Family: Allosauridae

Allosaurus europaeus – Length: ~12.01 meters (39.4 feet), Height: ~4.02 meters (13.2 feet), Weight: ~1,500 kg (3,300 lbs) Late Jurassic (~150 Mya), Europe, North America (USA)
Yangchuanosaurus zigongensis – Length: ~10 meters (33 feet), Height: ~3.5 meters (11.5 feet), Weight: ~3,000 kg (6,600 lbs) Late Jurassic (~155 Mya), China

Family: Spinosauridae

Acrocanthosaurus atokensis – Length: ~11 meters (36 feet), Height: ~4 meters (13 feet), Weight: ~6,000 kg (13,200 lbs) Early Cretaceous (~125 Mya), North America
Spinosaurus aegyptiacus – Length: ~16 meters (52 feet), Height: ~5.5 meters (18 feet), Weight: ~7,000 kg (15,400 lbs) Early Cretaceous (~112 Mya), Africa

Family: Tyrannosauridae

Albertosaurus sarcophagus – Length: ~9 meters (30 feet), Height: ~3.5 meters (11.5 feet), Weight: ~2,000 kg (4,400 lbs) Late Cretaceous (~70 Mya), North America
Alioramus altai – Length: ~5 meters (16.4 feet), Height: ~2 meters (6.6 feet), Weight: ~500 kg (1,100 lbs) Late Cretaceous (~70 Mya), Mongolia
Daspletosaurus horneri – Length: ~9 meters (30 feet), Height: ~3 meters (10 feet), Weight: ~3,800 kg (8,400 lbs) Late Cretaceous (~75 Mya), North America
Tarbosaurus bataar – Length: ~12 meters (39 feet), Height: ~3.5 meters (11.5 feet), Weight: ~5,000 kg (11,000 lbs) Late Cretaceous (~70 Mya), Mongolia
Tyrannosaurus Rex – Length: ~14.50 meters (47.6 feet), Height: ~6 meters (19.7 feet), Weight: ~8,000–9,000 kg (17,600–19,800 lbs) Late Cretaceous (~66 Mya), North America

Would you like further details on any of these?

Here are the estimated sizes for the listed species of Sauropodomorpha:

Suborder: Sauropodomorpha

Infraorder: Prosauropoda

Family: Herrerasauridae

Herrerasaurus ischigualastensis – Length: ~6 meters (20 feet), Height: ~1.5 meters (5 feet), Weight: ~250 kg (550 lbs) Late Triassic (~230 Mya), Argentina
Sanjuansaurus gordilloi – Length: ~3 meters (10 feet), Height: ~1 meter (3.3 feet), Weight: ~70 kg (154 lbs) Late Triassic (~230 Mya), Argentina
Smurfette (La Schtroumpfette) – [User envisions Smurfette evolving from a Prosauropoda, but specific dimensions are unknown] Fictional character inspired by the Smurfs, potentially for creative and narrative use, but not a real dinosaur
Staurikosaurus pricei – Length: ~2.25 meters (7.4 feet), Height: ~0.75 meters (2.5 feet), Weight: ~30 kg (66 lbs) Early Triassic (~225 Mya), Brazil

Family: Anchisauridae

Anchisaurus polyzelus – Length: ~2.4 meters (8 feet), Height: ~1 meter (3.3 feet), Weight: ~30 kg (66 lbs) Early Jurassic (~200 Mya), North America
Efraasia minor – Length: ~6 meters (20 feet), Height: ~2 meters (6.6 feet), Weight: ~500 kg (1,100 lbs) Late Triassic (~215 Mya), Germany
Thecodontosaurus antiquus – Length: ~2 meters (6.6 feet), Height: ~1 meter (3.3 feet), Weight: ~25 kg (55 lbs) Late Triassic (~210 Mya), England

Family: Plateosauridae

Massospondylus kaalae – Length: ~4 meters (13 feet), Height: ~1.5 meters (5 feet), Weight: ~200 kg (440 lbs) Early Jurassic (~200 Mya), South Africa
Mussaurus patagonicus – Length: ~6 meters (20 feet), Height: ~2 meters (6.6 feet), Weight: ~1,000 kg (2,200 lbs) Late Triassic (~210 Mya), Argentina
Plateosaurus gracilis – Length: ~6 meters (20 feet), Height: ~2 meters (6.6 feet), Weight: ~600 kg (1,300 lbs) Late Triassic (~210 Mya), Europe

Family: Melanorosauridae

Riojasaurus incertus – Length: ~10 meters (33 feet), Height: ~3 meters (10 feet), Weight: ~3,000 kg (6,600 lbs) Late Triassic (~210 Mya), Argentina

Infraorder: Sauropoda

Family: Cetiosauridae

Barapasaurus tagorei – Length: ~14 meters (46 feet), Height: ~4 meters (13 feet), Weight: ~8,000 kg (17,600 lbs) Early Jurassic (~200 Mya), India
Cetiosaurus oxoniensis – Length: ~15 meters (49 feet), Height: ~4.5 meters (15 feet), Weight: ~10,000 kg (22,000 lbs) Early Jurassic (~170 Mya), England

Family: Brachiosauridae

Brachiosaurus altithorax – Length: ~25 meters (82 feet), Height: ~16 meters (52.5 feet), Weight: ~56,000 kg (123,000 lbs) Late Jurassic (~154 Mya), North America, Asia
Sauroposeidon proteles – Length: ~34 meters (112 feet), Height: ~18 meters (59 feet), Weight: ~60,000 kg (132,000 lbs) Early Cretaceous (~110 Mya), North America

Family: Camarasauridae

Camarasaurus supremus – Length: ~23 meters (75 feet), Height: ~9 meters (29.5 feet), Weight: ~47,000 kg (103,600 lbs) Late Jurassic (~150 Mya), North America
Euhelopus zdanskyi – Length: ~15 meters (49 feet), Height: ~5 meters (16.4 feet), Weight: ~15,000 kg (33,000 lbs) Early Cretaceous (~125 Mya), China
Opisthocoelicaudia skarzynskii – Length: ~12 meters (39 feet), Height: ~4 meters (13 feet), Weight: ~10,000 kg (22,000 lbs) Late Cretaceous (~75 Mya), Mongolia

Family: Diplodocidae

Apatosaurus ajax – Length: ~27 meters (88.6 feet), Height: ~6 meters (19.7 feet), Weight: ~20,000 kg (44,000 lbs) Late Jurassic (~150 Mya), North America
Dicraeosaurus sattleri – Length: ~12 meters (39 feet), Height: ~3 meters (10 feet), Weight: ~4,000 kg (8,800 lbs) Late Jurassic (~150 Mya), Tanzania
Diplodocus hallorum – Length: ~33 meters (108 feet), Height: ~5.95 meters (19.5 feet), Weight: ~25,000 kg (55,000 lbs) Late Jurassic (~150 Mya), North America
Mamenchisaurus sinocanadorum – Length: ~35 meters (115 feet), Height: ~17.85 meters (58.6 feet), Weight: ~50,000 kg (110,000 lbs) Late Jurassic (~150 Mya), China
Supersaurus vivianae – Length: ~39–42 meters (128–138 feet), Height: ~21.5 meters (70.5 feet), Weight: ~50,000 kg (110,000 lbs) Late Jurassic (~150 Mya), North America

Family: Titanosauridae

Alamosaurus sanjuanensis – Length: ~30 meters (98 feet), Height: ~18.7 meters (61.4 feet), Weight: ~30,000 kg (66,000 lbs) Late Cretaceous (~70 Mya), North America
Dreadnoughtus schrani – Length: ~26 meters (85 feet), Height: ~15.82 meters (51.9 feet), Weight: ~65,000 kg (143,000 lbs) Late Cretaceous (~77 Mya), South America
Saltasaurus loricatus – Length: ~12 meters (39 feet), Height: ~4 meters (13 feet), Weight: ~7,000 kg (15,400 lbs) Late Cretaceous (~80 Mya), South America

Would you like additional details or comparisons on any species?

Ornithischia

Here is the estimated size information for the species of Cerapoda:

Suborder: Cerapoda

Infraorder: Ornithopoda

Family: Fabrosauridae

Lesothosaurus diagnosticus – Length: ~1.2 meters (4 feet), Height: ~0.3 meters (1 foot), Weight: ~1–2 kg (2–4 lbs) Early Jurassic (~200 Mya), Lesotho
Scutellosaurus lawleri – Length: ~2 meters (6.6 feet), Height: ~0.6 meters (2 feet), Weight: ~10 kg (22 lbs) Early Jurassic (~200 Mya), North America

Family: Heterodontosauridae

Echinodon becklesii – Length: ~1 meter (3.3 feet), Height: ~0.3 meters (1 foot), Weight: ~1 kg (2.2 lbs) Early Jurassic (~200 Mya), United Kingdom
Heterodontosaurus tucki – Length: ~1.5 meters (5 feet), Height: ~0.5 meters (1.6 feet), Weight: ~3–4 kg (6.6–8.8 lbs) Early Jurassic (~190 Mya), South Africa
Pisanosaurus mertii – Length: ~1 meter (3.3 feet), Height: ~0.3 meters (1 foot), Weight: ~2 kg (4.4 lbs) Late Triassic (~210 Mya), Argentina

Family: Hypsilophodontidae

Callovosaurus leedsi – Length: ~3 meters (9.8 feet), Height: ~1 meter (3.3 feet), Weight: ~25 kg (55 lbs) Middle Jurassic (~165 Mya), United Kingdom
Dryosaurus elderae – Length: ~3 meters (10 feet), Height: ~1 meter (3.3 feet), Weight: ~30 kg (66 lbs) Late Jurassic (~150 Mya), North America
Hypsilophodon foxii – Length: ~2 meters (6.6 feet), Height: ~0.7 meters (2.3 feet), Weight: ~10–15 kg (22–33 lbs) Early Cretaceous (~130 Mya), United Kingdom
Nanosaurus agilis – Length: ~1 meter (3.3 feet), Height: ~0.3 meters (1 foot), Weight: ~1–2 kg (2.2–4.4 lbs) Late Jurassic (~150 Mya), North America
Parksosaurus warreni – Length: ~2 meters (6.6 feet), Height: ~0.7 meters (2.3 feet), Weight: ~10 kg (22 lbs) Late Jurassic (~150 Mya), North America
Thescelosaurus garbanii – Length: ~2 meters (6.6 feet), Height: ~0.7 meters (2.3 feet), Weight: ~15 kg (33 lbs) Late Cretaceous (~70 Mya), North America

Family: Iguanodontidae

Camptosaurus dispar – Length: ~5 meters (16.4 feet), Height: ~2 meters (6.6 feet), Weight: ~600 kg (1,300 lbs) Late Jurassic (~150 Mya), North America
Iguanodon bernissartensis – Length: ~11.96 meters (39.2 feet), Height: ~4.26 meters (14 feet), Weight: ~3,500–5,000 kg (7,700–11,000 lbs) Early Cretaceous (~130 Mya), Belgium
Mantellisaurus atherfieldensis – Length: ~5 meters (16.4 feet), Height: ~2 meters (6.6 feet), Weight: ~500–600 kg (1,100–1,300 lbs) Early Cretaceous (~130 Mya), United Kingdom
Muttaburrasaurus langdoni – Length: ~7 meters (23 feet), Height: ~2 meters (6.6 feet), Weight: ~500–1,000 kg (1,100–2,200 lbs) Early Cretaceous (~110 Mya), Australia
Ouranosaurus nigeriensis – Length: ~7 meters (23 feet), Height: ~2.5 meters (8.2 feet), Weight: ~1,000–2,000 kg (2,200–4,400 lbs) Early Cretaceous (~120 Mya), Niger
Probactrosaurus gobiensis – Length: ~4 meters (13 feet), Height: ~1.5 meters (5 feet), Weight: ~300 kg (660 lbs) Late Cretaceous (~85 Mya), China
Tenontosaurus dossi – Length: ~5 meters (16.4 feet), Height: ~1.5 meters (5 feet), Weight: ~500 kg (1,100 lbs) Early Cretaceous (~130 Mya), North America

Family: Hadrosauridae

Bactrosaurus johnsoni – Length: ~7 meters (23 feet), Height: ~2 meters (6.6 feet), Weight: ~1,000–2,000 kg (2,200–4,400 lbs) Early Cretaceous (~125 Mya), China
Corythosaurus casuarius – Length: ~9 meters (30 feet), Height: ~3 meters (10 feet), Weight: ~4,000 kg (8,800 lbs) Late Cretaceous (~75 Mya), North America
Edmontosaurus regalis – Length: ~12 meters (39 feet), Height: ~4 meters (13 feet), Weight: ~3,500–4,000 kg (7,700–8,800 lbs) Late Cretaceous (~70 Mya), North America
Hadrosaurus foulkii – Length: ~9 meters (30 feet), Height: ~3 meters (10 feet), Weight: ~2,500–3,000 kg (5,500–6,600 lbs) Late Cretaceous (~75 Mya), North America
Hypacrosaurus stebingeri – Length: ~9 meters (30 feet), Height: ~3 meters (10 feet), Weight: ~2,000 kg (4,400 lbs) Late Cretaceous (~75 Mya), North America
Kritosaurus navajovius – Length: ~9 meters (30 feet), Height: ~3 meters (10 feet), Weight: ~3,000 kg (6,600 lbs) Late Cretaceous (~75 Mya), North America
Lambeosaurus magnicristatus – Length: ~9 meters (30 feet), Height: ~3 meters (10 feet), Weight: ~4,000 kg (8,800 lbs) Late Cretaceous (~75 Mya), North America
Maiasaura peeblesorum – Length: ~9 meters (30 feet), Height: ~3 meters (10 feet), Weight: ~2,500–3,000 kg (5,500–6,600 lbs) Late Cretaceous (~75 Mya), North America
Olorotitan arharensis – Length: ~8 meters (26 feet), Height: ~2.5 meters (8.2 feet), Weight: ~1,500 kg (3,300 lbs) Late Cretaceous (~70 Mya), Russia
Parasaurolophus walkeri – Length: ~10 meters (33 feet), Height: ~3.5 meters (11.5 feet), Weight: ~2,500 kg (5,500 lbs) Late Cretaceous (~75 Mya), North America
Prosaurolophus maximus – Length: ~9 meters (30 feet), Height: ~3 meters (10 feet), Weight: ~2,000 kg (4,400 lbs) Late Cretaceous (~75 Mya), North America
Saurolophus osborni – Length: ~10 meters (33 feet), Height: ~3 meters (10 feet), Weight: ~3,000 kg (6,600 lbs) Late Cretaceous (~75 Mya), North America, Asia
Shantungosaurus giganteus – Length: ~15 meters (49 feet), Height: ~5 meters (16.4 feet), Weight: ~8,000–10,000 kg (17,600–22,000 lbs) Late Cretaceous (~70 Mya), China
Tsintaosaurus spinorhinus – Length: ~8 meters (26 feet), Height: ~2.5 meters (8.2 feet), Weight: ~1,000–2,000 kg (2,200–4,400 lbs) Late Cretaceous (~70 Mya), China

Infraorder: Ceratopia

Family: Pachycephalosauridae

Homalocephale calathocercos – Length: ~2 meters (6.6 feet), Height: ~0.6 meters (2 feet), Weight: ~50–70 kg (110–154 lbs) Late Cretaceous (~75 Mya), North America
Pachycephalosaurus wyomingensis – Length: ~5 meters (16.4 feet), Height: ~1.5 meters (5 feet), Weight: ~450–500 kg (990–1,100 lbs) Late Cretaceous (~75 Mya), North America
Prenocephale prenes – Length: ~4 meters (13 feet), Height: ~1 meter (3.3 feet), Weight: ~100 kg (220 lbs) Late Cretaceous (~75 Mya), North America
Stegoceras validum – Length: ~3 meters (10 feet), Height: ~1 meter (3.3 feet), Weight: ~100–150 kg (220–330 lbs) Late Cretaceous (~75 Mya), North America

Family: Psittacosauridae

Psittacosaurus meileyingensis – Length: ~2 meters (6.6 feet), Height: ~0.5 meters (1.6 feet), Weight: ~2–3 kg (4.4–6.6 lbs) Early Cretaceous (~125 Mya), China

Family: Protoceratopidae

Bagaceratops rozhdestvenskyi – Length: ~2 meters (6.6 feet), Height: ~0.6 meters (2 feet), Weight: ~20–30 kg (44–66 lbs) Late Cretaceous (~70 Mya), Mongolia
Leptoceratops gracilis – Length: ~2 meters (6.6 feet), Height: ~0.6 meters (2 feet), Weight: ~30 kg (66 lbs) Late Cretaceous (~70 Mya), North America
Microceratus gobiensis – Length: ~1 meter (3.3 feet), Height: ~0.3 meters (1 foot), Weight: ~1–2 kg (2.2–4.4 lbs) Late Cretaceous (~70 Mya), Mongolia
Montanoceratops cerorhynchus – Length: ~2 meters (6.6 feet), Height: ~0.6 meters (2 feet), Weight: ~30 kg (66 lbs) Late Cretaceous (~70 Mya), North America
Protoceratops hellenikorhinus – Length: ~2 meters (6.6 feet), Height: ~0.6 meters (2 feet), Weight: ~20–30 kg (44–66 lbs) Late Cretaceous (~75 Mya), Mongolia

Family: Ceratopidae

Anchiceratops ornatus – Length: ~4 meters (13 feet), Height: ~1.5 meters (5 feet), Weight: ~1,000 kg (2,200 lbs) Late Cretaceous (~75 Mya), North America
Arrhinoceratops brachyops – Length: ~4 meters (13 feet), Height: ~1.5 meters (5 feet), Weight: ~1,000 kg (2,200 lbs) Late Cretaceous (~75 Mya), North America
Centrosaurus apertus – Length: ~6 meters (20 feet), Height: ~2 meters (6.6 feet), Weight: ~2,000 kg (4,400 lbs) Late Cretaceous (~75 Mya), North America
Chasmosaurus belli – Length: ~5–6 meters (16–20 feet), Height: ~2 meters (6.6 feet), Weight: ~2,000–2,500 kg (4,400–5,500 lbs) Late Cretaceous (~75 Mya), North America
Nasutoceratops titusi – Length: ~5 meters (16.4 feet), Height: ~2 meters (6.6 feet), Weight: ~1,000–1,500 kg (2,200–3,300 lbs) Late Cretaceous (~75 Mya), North America
Pachyrhinosaurus lakustai – Length: ~8.2 meters (26.3 feet), Height: ~4.10 meters (13.5 feet), Weight: ~2,000 kg (4,400 lbs) Late Cretaceous (~75 Mya), North America
Pentaceratops sternbergii – Length: ~7 meters (23 feet), Height: ~5.16 meters (16.9 feet), Weight: ~3,000–4,000 kg (6,600–8,800 lbs) Late Cretaceous (~75 Mya), North America
Styracosaurus ovatus – Length: ~5 meters (16.4 feet), Height: ~2 meters (6.6 feet), Weight: ~2,000 kg (4,400 lbs) Late Cretaceous (~75 Mya), North America
Torosaurus latus – Length: ~7 meters (23 feet), Height: ~3 meters (10 feet), Weight: ~5,000 kg (11,000 lbs) Late Cretaceous (~75 Mya), North America
Triceratops horridus – Length: ~8 meters (26 feet), Height: ~3 meters (10 feet), Weight: ~6,000–12,000 kg (13,200–26,400 lbs) Late Cretaceous (~70 Mya), North America

Let me know if you'd like further information or comparisons!

Here are the estimated sizes for the species in Thyreophora:

Suborder: Thyreophora

Infraorder: Stegosauria

Family: Huayangosauridae

Huayangosaurus taibaii – Length: ~4 meters (13 feet), Height: ~1.5 meters (5 feet), Weight: ~1,000–1,500 kg (2,200–3,300 lbs) Middle Jurassic (~165 Mya), China
Tuojiangosaurus multispinus – Length: ~7 meters (23 feet), Height: ~2 meters (6.6 feet), Weight: ~2,000–3,000 kg (4,400–6,600 lbs) Late Jurassic (~160 Mya), China

Family: Stegosauridae

Kentrosaurus aethiopicus – Length: ~4 meters (13 feet), Height: ~1.5 meters (5 feet), Weight: ~500–600 kg (1,100–1,300 lbs) Late Jurassic (~155 Mya), Tanzania
Stegosaurus stenops – Length: ~9 meters (30 feet), Height: ~4 meters (13 feet), Weight: ~2,000–3,000 kg (4,400–6,600 lbs) Late Jurassic (~150 Mya), North America
Wuerhosaurus ordosensis – Length: ~6 meters (20 feet), Height: ~2 meters (6.6 feet), Weight: ~1,000–1,500 kg (2,200–3,300 lbs) Early Cretaceous (~120 Mya), China

Infraorder: Ankylosauria

Family: Scelidosauridae

Scelidosaurus harrisonii – Length: ~4 meters (13 feet), Height: ~1 meter (3.3 feet), Weight: ~500–600 kg (1,100–1,300 lbs) Early Jurassic (~200 Mya), United Kingdom

Family: Nodosauridae

Hylaeosaurus armatus – Length: ~4 meters (13 feet), Height: ~1.5 meters (5 feet), Weight: ~1,000–1,500 kg (2,200–3,300 lbs) Early Cretaceous (~130 Mya), United Kingdom
Nodosaurus textilis – Length: ~4 meters (13 feet), Height: ~1.5 meters (5 feet), Weight: ~1,500–2,000 kg (3,300–4,400 lbs) Late Cretaceous (~75 Mya), North America
Panoplosaurus mirus – Length: ~5 meters (16.4 feet), Height: ~1.5 meters (5 feet), Weight: ~2,000–3,000 kg (4,400–6,600 lbs) Late Cretaceous (~75 Mya), North America
Polacanthus foxii – Length: ~5 meters (16.4 feet), Height: ~1.5 meters (5 feet), Weight: ~2,000–3,000 kg (4,400–6,600 lbs) Early Cretaceous (~130 Mya), United Kingdom
Sauropelta edwardsorum – Length: ~5 meters (16.4 feet), Height: ~1 meter (3.3 feet), Weight: ~1,000–1,500 kg (2,200–3,300 lbs) Early Cretaceous (~125 Mya), North America
Silvisaurus condrayi – Length: ~4 meters (13 feet), Height: ~1.5 meters (5 feet), Weight: ~1,000 kg (2,200 lbs) Early Cretaceous (~125 Mya), North America
Struthiosaurus transylvanicus – Length: ~3 meters (9.8 feet), Height: ~1 meter (3.3 feet), Weight: ~300–400 kg (660–880 lbs) Late Cretaceous (~70 Mya), Europe

Family: Ankylosauridae

Ankylosaurus magniventris – Length: ~9.6 meters (31.5 feet), Height: ~3.6 meters (11.8 feet), Weight: ~6,000–8,000 kg (13,200–17,600 lbs) Late Cretaceous (~68 Mya), North America
Euoplocephalus tutus – Length: ~6 meters (20 feet), Height: ~1.5 meters (5 feet), Weight: ~3,000–4,000 kg (6,600–8,800 lbs) Late Cretaceous (~75 Mya), North America
Saichania chulsanensis – Length: ~6 meters (20 feet), Height: ~2 meters (6.6 feet), Weight: ~2,500–3,000 kg (5,500–6,600 lbs) Late Cretaceous (~75 Mya), Mongolia
Talarurus plicatospineus – Length: ~5 meters (16.4 feet), Height: ~1.5 meters (5 feet), Weight: ~2,000–3,000 kg (4,400–6,600 lbs) Late Cretaceous (~75 Mya), Mongolia

Let me know if you need more information on any of these species!

Pterosauria – Lords of the Ancient Skies: Chart Table

Clade	Name	Time	Locality	Size Comparison	Diet	Formation	Geographical	Geological
Pterosauria, Rhamphorhynchoidea, Dimorphodontidae	Dimorphodon macronyx	Early Jurassic (190–180 Ma)	Lyme Regis, England	Wingspan ~4.6 ft (1.4 m); size of a large eagle	Carnivore/Insectivore	Blue Lias Formation	Western Europe (England)	Early Jurassic (Hettangian–Sinemurian)
Pterosauria, Rhamphorhynchoidea, Eudimorphodontidae	Eudimorphodon ranzii	Late Triassic (210–200 Ma)	Cene, Northern Italy	Wingspan ~3.3 ft (1 m); size of a hawk	Piscivore/Carnivore	Zorzino Limestone	Southern Europe (Italy)	Late Triassic (Norian)
Pterosauria, Rhamphorhynchoidea, Rhamphorhynchidae	Anurognathus ammoni	Late Jurassic (150–148 Ma)	Solnhofen, Germany	Wingspan ~1.6 ft (0.5 m); size of a small bat	Insectivore	Solnhofen Limestone	Western Europe (Germany)	Late Jurassic (Tithonian)
Pterosauria, Rhamphorhynchoidea, Rhamphorhynchidae	Rhamphorhynchus etchesi	Late Jurassic (150–148 Ma)	Kimmeridge, England; Solnhofen, Germany	Wingspan ~5.9 ft (1.8 m); size of a large seagull	Piscivore	Kimmeridge Clay, Solnhofen Limestone	Western Europe (England, Germany)	Late Jurassic (Kimmeridgian–Tithonian)
Pterosauria, Rhamphorhynchoidea, Rhamphorhynchidae	Scaphognathus crassirostris	Late Jurassic (150–148 Ma)	Solnhofen, Germany	Wingspan ~3 ft (0.9 m); size of a crow	Carnivore/Insectivore	Solnhofen Limestone	Western Europe (Germany)	Late Jurassic (Tithonian)
Pterosauria, Rhamphorhynchoidea, Rhamphorhynchidae	Sordes pilosus	Late Jurassic (155–150 Ma)	Karatau, Kazakhstan	Wingspan ~2 ft (0.6 m); size of a small hawk	Piscivore/Insectivore	Karabastau Formation	Central Asia (Kazakhstan)	Late Jurassic (Oxfordian–Kimmeridgian)
Pterosauria, Pterodactyloidea, Dsungaripteridae	Dsungaripterus weii	Early Cretaceous (120–110 Ma)	Junggar Basin, China	Wingspan ~10–11.5 ft (3–3.5 m); size of a large albatross	Carnivore/Molluscivore	Lianmugin Formation	East Asia (China)	Early Cretaceous (Aptian–Albian)
Pterosauria, Pterodactyloidea, Pterodaustriidae	Arthurdactylus conandoylei	Early Cretaceous (125–120 Ma)	Santana, Brazil	Wingspan ~15 ft (4.6 m); size of a small plane	Piscivore	Santana Formation	South America (Brazil)	Early Cretaceous (Albian)
Pterosauria, Pterodactyloidea, Pterodaustriidae	Pterodaustro guinazui	Early Cretaceous (105–100 Ma)	San Luis, Argentina	Wingspan ~8.2 ft (2.5 m); size of a large pelican	Filter-feeder	Lagarcito Formation	South America (Argentina)	Early Cretaceous (Albian)
Pterosauria, Pterodactyloidea, Pterodactylidae	Cearadactylus atrox	Early Cretaceous (120–110 Ma)	Santana, Brazil	Wingspan ~16.5 ft (5 m); size of a small plane	Piscivore	Santana Formation	South America (Brazil)	Early Cretaceous (Albian)
Pterosauria, Pterodactyloidea, Ornithocheiridae	Pteranodon sternbergi	Late Cretaceous (85–75 Ma)	Western Interior Seaway, USA	Wingspan ~20–23 ft (6–7 m); size of a hang glider	Piscivore	Niobrara Formation	North America (Kansas, USA)	Late Cretaceous (Campanian)
Pterosauria, Pterodactyloidea, Ornithocheiridae	Quetzalcoatlus lawsoni	Late Cretaceous (70–65 Ma)	Big Bend, Texas, USA	Wingspan ~33–45.9 ft (10–14 m); size of a small airplane	Carnivore/Scavenger	Javelina Formation	North America (Texas, USA)	Late Cretaceous (Maastrichtian)

Theropoda – The Predatory Elite: Chart Table

Clade	Name	Time	Locality	Size Comparison	Diet	Formation	Geographical	Geological
Saurischia, Theropoda, Coelurosauria, Podokesauridae	Coelophysis bauri	Late Triassic (210–205 Ma)	Ghost Ranch, New Mexico, USA	~9 ft (2.7 m) long; size of a large dog	Carnivore	Chinle Formation	North America (USA)	Late Triassic (Norian)
Saurischia, Theropoda, Coelurosauria, Podokesauridae	Procompsognathus triassicus	Late Triassic (210 Ma)	Pfaffenheim, Germany	~3.3 ft (1 m) long; size of a chicken	Carnivore/Insectivore	Löwenstein Formation	Western Europe (Germany)	Late Triassic (Norian)
Saurischia, Theropoda, Coelurosauria, Podokesauridae	Saltopus elginensis	Late Triassic (230–225 Ma)	Elgin, Scotland	~2 ft (0.6 m) long; size of a small cat	Carnivore/Insectivore	Lossiemouth Sandstone	Western Europe (Scotland)	Late Triassic (Carnian–Norian)
Saurischia, Theropoda, Coelurosauria, Coeluridae	Coelurus fragilis	Late Jurassic (155–150 Ma)	Morrison, Wyoming, USA	~6.6 ft (2 m) long; size of a wolf	Carnivore	Morrison Formation	North America (USA)	Late Jurassic (Kimmeridgian–Tithonian)
Saurischia, Theropoda, Coelurosauria, Coeluridae	Moros intrepidus	Late Cretaceous (96 Ma)	Cedar Mountain, Utah, USA	~5 ft (1.5 m) long; size of a small dog	Carnivore	Cedar Mountain Formation	North America (USA)	Late Cretaceous (Cenomanian)
Saurischia, Theropoda, Coelurosauria, Compsognathidae	Compsognathus longipes	Late Jurassic (150 Ma)	Solnhofen, Germany; Canjuers, France	~4.6 ft (1.4 m) long; size of a turkey	Carnivore	Solnhofen Limestone	Western Europe (Germany, France)	Late Jurassic (Tithonian)
Saurischia, Theropoda, Coelurosauria, Compsognathidae	Sinosauropteryx lingyuanensis	Early Cretaceous (125–120 Ma)	Liaoning, China	~4 ft (1.2 m) long; size of a large chicken	Carnivore	Yixian Formation	East Asia (China)	Early Cretaceous (Barremian–Aptian)
Saurischia, Theropoda, Coelurosauria, Ornithomimidae	Dromiceiomimus samueli	Late Cretaceous (70 Ma)	Dinosaur Park, Alberta, Canada	~12 ft (3.6 m) long; size of an ostrich	Omnivore	Dinosaur Park Formation	North America (Canada)	Late Cretaceous (Campanian)
Saurischia, Theropoda, Coelurosauria, Ornithomimidae	Gallimimus bullatus	Late Cretaceous (70 Ma)	Nemegt, Gobi Desert, Mongolia	~20 ft (6 m) long; size of a large ostrich	Omnivore	Nemegt Formation	East Asia (Mongolia)	Late Cretaceous (Maastrichtian)
Saurischia, Theropoda, Coelurosauria, Ornithomimidae	Ornithomimus velox	Late Cretaceous (75–65 Ma)	Denver, Colorado, USA	~12 ft (3.6 m) long; size of an ostrich	Omnivore	Denver Formation	North America (USA)	Late Cretaceous (Campanian–Maastrichtian)
Saurischia, Theropoda, Coelurosauria, Ornithomimidae	Struthiomimus altus	Late Cretaceous (75 Ma)	Dinosaur Park, Alberta, Canada; Lance, Wyoming, USA	~14 ft (4.3 m) long; size of an ostrich	Omnivore	Dinosaur Park Formation; Lance Formation	North America (Canada, USA)	Late Cretaceous (Campanian)
Saurischia, Theropoda, Coelurosauria, Deinocheiridae	Deinocheirus mirificus	Late Cretaceous (70 Ma)	Nemegt, Gobi Desert, Mongolia	~36 ft (11 m) long; size of a bus	Omnivore	Nemegt Formation	East Asia (Mongolia)	Late Cretaceous (Maastrichtian)
Saurischia, Theropoda, Coelurosauria, Maniraptoria, Oviraptoridae	Oviraptor philoceratops	Late Cretaceous (75 Ma)	Djadokhta, Mongolia	~6 ft (1.8 m) long; size of a large turkey	Omnivore	Djadokhta Formation	East Asia (Mongolia)	Late Cretaceous (Campanian)
Saurischia, Theropoda, Coelurosauria, Maniraptoria, Therizinosauridae	Therizinosaurus cheloniformis	Late Cretaceous (70 Ma)	Nemegt, Gobi Desert, Mongolia	~33 ft (10 m) long; size of a large elephant	Herbivore	Nemegt Formation	East Asia (Mongolia)	Late Cretaceous (Maastrichtian)
Saurischia, Theropoda, Coelurosauria, Maniraptoria, Saurornithoididae	Stenonychosaurus inequalis	Late Cretaceous (75 Ma)	Dinosaur Park, Alberta, Canada	~6.6 ft (2 m) long; size of a wolf	Carnivore	Dinosaur Park Formation	North America (Canada)	Late Cretaceous (Campanian)
Saurischia, Theropoda, Coelurosauria, Maniraptoria, Saurornithoididae	Troodon formosus	Late Cretaceous (77–65 Ma)	Hell Creek, Montana, USA	~6.6 ft (2 m) long; size of a wolf	Carnivore/Omnivore	Hell Creek Formation	North America (USA)	Late Cretaceous (Maastrichtian)
Saurischia, Theropoda, Coelurosauria, Maniraptoria, Dromaeosauridae	Bambiraptor feinbergi	Late Cretaceous (75 Ma)	Two Medicine, Montana, USA	~3 ft (0.9 m) long; size of a small dog	Carnivore	Two Medicine Formation	North America (USA)	Late Cretaceous (Campanian)
Saurischia, Theropoda, Coelurosauria, Maniraptoria, Dromaeosauridae	Deinonychus antirrhopus	Early Cretaceous (115–108 Ma)	Cloverly, Montana, USA	~11 ft (3.4 m) long; size of a large wolf	Carnivore	Cloverly Formation	North America (USA)	Early Cretaceous (Aptian–Albian)
Saurischia, Theropoda, Coelurosauria, Maniraptoria, Dromaeosauridae	Dromaeosaurus albertensis	Late Cretaceous (76 Ma)	Dinosaur Park, Alberta, Canada	~6 ft (1.8 m) long; size of a large dog	Carnivore	Dinosaur Park Formation	North America (Canada)	Late Cretaceous (Campanian)
Saurischia, Theropoda, Coelurosauria, Maniraptoria, Dromaeosauridae	Saurornitholestes sullivani	Late Cretaceous (75 Ma)	Dinosaur Park, Alberta, Canada	~6 ft (1.8 m) long; size of a large dog	Carnivore	Dinosaur Park Formation	North America (Canada)	Late Cretaceous (Campanian)
Saurischia, Theropoda, Coelurosauria, Maniraptoria, Dromaeosauridae	Velociraptor osmolskae	Late Cretaceous (75–70 Ma)	Djadokhta, Mongolia	~6 ft (1.8 m) long; size of a large dog	Carnivore	Djadokhta Formation	East Asia (Mongolia)	Late Cretaceous (Campanian)
Saurischia, Theropoda, Coelurosauria, Archaeopterygiformes	Archaeopteryx albersdoerferi	Late Jurassic (150 Ma)	Solnhofen, Germany	~1.6 ft (0.5 m) long; size of a pigeon	Carnivore/Insectivore	Solnhofen Limestone	Western Europe (Germany)	Late Jurassic (Tithonian)
Saurischia, Theropoda, Ceratosauria, Ceratosauridae	Ceratosaurus nasicornis	Late Jurassic (153–148 Ma)	Morrison, Colorado, USA; Lourinhã, Portugal	~20 ft (6 m) long; size of a large alligator	Carnivore	Morrison Formation; Lourinhã Formation	North America (USA); Western Europe (Portugal)	Late Jurassic (Kimmeridgian–Tithonian)
Saurischia, Theropoda, Ceratosauria, Ceratosauridae	Dilophosaurus wetherilli	Early Jurassic (193 Ma)	Kayenta, Arizona, USA	~20 ft (6 m) long; size of a large alligator	Carnivore	Kayenta Formation	North America (USA)	Early Jurassic (Sinemurian)
Saurischia, Theropoda, Ceratosauria, Ceratosauridae	Elaphrosaurus bambergi	Late Jurassic (154 Ma)	Tendaguru, Tanzania	~20 ft (6 m) long; size of a large horse	Carnivore/Omnivore	Tendaguru Formation	East Africa (Tanzania)	Late Jurassic (Kimmeridgian)
Saurischia, Theropoda, Carnosauria, Megalosauridae	Eustreptospondylus oxoniensis	Late Jurassic (160 Ma)	Oxford, England	~23 ft (7 m) long; size of a large bear	Carnivore	Oxford Clay Formation	Western Europe (England)	Late Jurassic (Callovian)
Saurischia, Theropoda, Carnosauria, Megalosauridae	Giganotosaurus carolinii	Early Cretaceous (99–97 Ma)	Candeleros, Argentina	~50.9 ft (15.5 m) long; size of a bus	Carnivore	Candeleros Formation	South America (Argentina)	Early Cretaceous (Cenomanian)
Saurischia, Theropoda, Carnosauria, Megalosauridae	Poekilopleuron bucklandii	Middle Jurassic (165 Ma)	Normandy, France	~23 ft (7 m) long; size of a large bear	Carnivore	Calcaire de Caen Formation	Western Europe (France)	Middle Jurassic (Bathonian)
Saurischia, Theropoda, Carnosauria, Megalosauridae	Proceratosaurus bradleyi	Middle Jurassic (165 Ma)	Minchinhampton, England	~10 ft (3 m) long; size of a large wolf	Carnivore	Great Oolite Group	Western Europe (England)	Middle Jurassic (Bathonian)
Saurischia, Theropoda, Carnosauria, Allosauridae	Allosaurus europaeus	Late Jurassic (150–145 Ma)	Lourinhã, Portugal; Morrison, Colorado, USA	~39.4 ft (12 m) long; size of a large rhino	Carnivore	Lourinhã Formation; Morrison Formation; Garden Park	Western Europe (Portugal); North America (USA)	Late Jurassic (Kimmeridgian–Tithonian)
Saurischia, Theropoda, Carnosauria, Allosauridae	Yangchuanosaurus zigongensis	Late Jurassic (160 Ma)	Zigong, China	~26 ft (8 m) long; size of a large rhino	Carnivore	Shangshaximiao Formation	East Asia (China)	Late Jurassic (Oxfordian–Kimmeridgian)
Saurischia, Theropoda, Carnosauria, Spinosauridae	Acrocanthosaurus atokensis	Early Cretaceous (115–110 Ma)	Antlers, Oklahoma, USA	~38 ft (11.5 m) long; size of a bus	Carnivore	Antlers Formation	North America (USA)	Early Cretaceous (Aptian–Albian)
Saurischia, Theropoda, Carnosauria, Spinosauridae	Spinosaurus aegyptiacus	Early Cretaceous (112–97 Ma)	Bahariya, Egypt; Kem Kem, Morocco	~50 ft (15 m) long; size of a large bus	Piscivore/Carnivore	Bahariya Formation, Kem Kem Beds	North Africa (Egypt, Morocco)	Early Cretaceous (Albian–Cenomanian)
Saurischia, Theropoda, Carnosauria, Tyrannosauridae	Albertosaurus sarcophagus	Late Cretaceous (70 Ma)	Horseshoe Canyon, Alberta, Canada	~30 ft (9 m) long; size of a large rhino	Carnivore	Horseshoe Canyon Formation	North America (Canada)	Late Cretaceous (Maastrichtian)
Saurischia, Theropoda, Carnosauria, Tyrannosauridae	Alioramus altai	Late Cretaceous (70 Ma)	Nemegt, Mongolia	~20 ft (6 m) long; size of a large alligator	Carnivore	Nemegt Formation	East Asia (Mongolia)	Late Cretaceous (Maastrichtian)
Saurischia, Theropoda, Carnosauria, Tyrannosauridae	Daspletosaurus horneri	Late Cretaceous (75 Ma)	Two Medicine, Montana, USA	~30 ft (9 m) long; size of a large rhino	Carnivore	Two Medicine Formation	North America (USA)	Late Cretaceous (Campanian)
Saurischia, Theropoda, Carnosauria, Tyrannosauridae	Tarbosaurus bataar	Late Cretaceous (70 Ma)	Nemegt, Mongolia	~40 ft (12.2 m) long; size of a large rhino	Carnivore	Nemegt Formation	East Asia (Mongolia)	Late Cretaceous (Maastrichtian)
Saurischia, Theropoda, Carnosauria, Tyrannosauridae	Tyrannosaurus rex	Late Cretaceous (68–65 Ma)	Hell Creek, Montana, Lance, Wyoming, USA	~45.9 ft (14 m) long; size of a bus	Carnivore	Hell Creek, Lance Formation	North America (USA)	Late Cretaceous (Maastrichtian)

Sauropodomorpha – The Gentle Giants: Chart Table

Clade	Name	Time	Locality	Size Comparison	Diet	Formation	Geographical	Geological
Saurischia, Sauropodomorpha, Prosauropoda, Herrerasauridae	Herrerasaurus ischigualastensis	Late Triassic (231 Ma)	Ischigualasto, Argentina	~13–20 ft (4–6 m) long; size of a large crocodile	Carnivore	Ischigualasto Formation	South America (Argentina)	Late Triassic (Carnian)
Saurischia, Sauropodomorpha, Prosauropoda, Herrerasauridae	Sanjuansaurus gordilloi	Late Triassic (231 Ma)	Ischigualasto, Argentina	~10 ft (3 m) long; size of a large dog	Carnivore	Ischigualasto Formation	South America (Argentina)	Late Triassic (Carnian)
Saurischia, Sauropodomorpha, Prosauropoda, Herrerasauridae	Smurfette (Hypothetical)	Late Triassic (231–225 Ma); then 1981	Hypothetical, South America (Argentina or Brazil); Europe	~7-10 inch tall. Smurfette is the same size as other Smurfs.	Carnivore/Omnivore	Hypothetical (Ischigualasto or Santa Maria Formation); Smurfette's origin is unique among the Smurfs.	South America (Argentina or Brazil); Western Europe (Belgium; Smurf Village)	Late Triassic (Carnian–Norian)
Saurischia, Sauropodomorpha, Prosauropoda, Herrerasauridae	Staurikosaurus pricei	Late Triassic (225 Ma)	Santa Maria, Brazil	~7 ft (2 m) long; size of a large dog	Carnivore	Santa Maria Formation	South America (Brazil)	Late Triassic (Carnian)
Saurischia, Sauropodomorpha, Prosauropoda, Anchisauridae	Anchisaurus polyzelus	Early Jurassic (190 Ma)	Connecticut Valley, USA	~6–8 ft (1.8–2.4 m) long; size of a large dog	Herbivore/Omnivore	Portland Formation	North America (USA)	Early Jurassic (Hettangian)
Saurischia, Sauropodomorpha, Prosauropoda, Anchisauridae	Efraasia minor	Late Triassic (210 Ma)	Stuttgart, Germany	~6.5 ft (2 m) long; size of a large dog	Herbivore/Omnivore	Löwenstein Formation	Western Europe (Germany)	Late Triassic (Norian)
Saurischia, Sauropodomorpha, Prosauropoda, Anchisauridae	Eoraptor lunensis	Late Triassic (231 Ma)	Ischigualasto, Argentina	~3.3 ft (1 m) long; size of a small dog	Omnivore	Ischigualasto Formation	South America (Argentina)	Late Triassic (Carnian)
Saurischia, Sauropodomorpha, Prosauropoda, Anchisauridae	Thecodontosaurus antiquus	Late Triassic (210 Ma)	Bristol, England	~6.5 ft (2 m) long; size of a large dog	Herbivore	Magnesian Conglomerate	Western Europe (England)	Late Triassic (Rhaetian)
Saurischia, Sauropodomorpha, Prosauropoda, Plateosauridae	Massospondylus kaalae	Early Jurassic (200–183 Ma)	Upper Karoo, South Africa	~13–20 ft (4–6 m) long; size of a large horse	Herbivore	Elliot Formation	Southern Africa (South Africa)	Early Jurassic (Hettangian–Pliensbachian)
Saurischia, Sauropodomorpha, Prosauropoda, Plateosauridae	Mussaurus patagonicus	Late Triassic (215 Ma)	El Tranquilo, Argentina	~10–20 ft (3–6 m) long; size of a horse (adults)	Herbivore	Laguna Colorada Formation	South America (Argentina)	Late Triassic (Norian)
Saurischia, Sauropodomorpha, Prosauropoda, Plateosauridae	Plateosaurus gracilis	Late Triassic (210 Ma)	Trossingen, Germany	~16–26 ft (5–8 m) long; size of a large horse	Herbivore	Trossingen Formation	Western Europe (Germany)	Late Triassic (Norian)
Saurischia, Sauropodomorpha, Prosauropoda, Melanorosauridae	Riojasaurus incertus	Late Triassic (210 Ma)	Los Colorados, Argentina	~33 ft (10 m) long; size of an elephant	Herbivore	Los Colorados Formation	South America (Argentina)	Late Triassic (Norian)
Saurischia, Sauropodomorpha, Sauropoda, Cetiosauridae	Barapasaurus tagorei	Early Jurassic (183 Ma)	Godavari Valley, India	~60 ft (18 m) long; size of a large bus	Herbivore	Kota Formation	South Asia (India)	Early Jurassic (Toarcian)
Saurischia, Sauropodomorpha, Sauropoda, Cetiosauridae	Cetiosaurus oxoniensis	Middle Jurassic (167 Ma)	Oxfordshire, England	~50 ft (15 m) long; size of a bus	Herbivore	Oxford Clay Formation	Western Europe (England)	Middle Jurassic (Callovian)
Saurischia, Sauropodomorpha, Sauropoda, Brachiosauridae	Brachiosaurus altithorax	Late Jurassic (154–150 Ma)	Morrison, Colorado, USA; Sichuan, China	~85 ft (26 m) long; size of a large airplane	Herbivore	Morrison Formation, Garden Park; Shishugou Formation	North America (USA); East Asia (China)	Late Jurassic (Kimmeridgian–Tithonian)
Saurischia, Sauropodomorpha, Sauropoda, Brachiosauridae	Sauroposeidon proteles	Early Cretaceous (112 Ma)	Antlers, Oklahoma, USA	~100 ft (30 m) long; size of a jumbo jet	Herbivore	Antlers Formation	North America (USA)	Early Cretaceous (Albian)
Saurischia, Sauropodomorpha, Sauropoda, Camarasauridae	Camarasaurus supremus	Late Jurassic (150–145 Ma)	Morrison, Wyoming, Uinta Mountains, USA	~60 ft (18 m) long; size of a large bus	Herbivore	Morrison Formation; Dinosaur National Monument	North America (USA)	Late Jurassic (Kimmeridgian–Tithonian)
Saurischia, Sauropodomorpha, Sauropoda, Camarasauridae	Euhelopus zdanskyi	Late Jurassic (150 Ma)	Shandong, China	~50 ft (15 m) long; size of a bus	Herbivore	Mengyin Formation	East Asia (China)	Late Jurassic (Tithonian)
Saurischia, Sauropodomorpha, Sauropoda, Camarasauridae	Opisthocoelicaudia skarzynskii	Late Cretaceous (70 Ma)	Nemegt, Mongolia	~40 ft (12 m) long; size of a bus	Herbivore	Nemegt Formation	East Asia (Mongolia)	Late Cretaceous (Maastrichtian)
Saurischia, Sauropodomorpha, Sauropoda, Diplodocidae	Apatosaurus ajax	Late Jurassic (150 Ma)	Morrison, Colorado, Uinta Mountains, USA	~79.7 ft (24.3 m) long; size of a large trailer	Herbivore	Morrison Formation; Dinosaur National Monument	North America (USA)	Late Jurassic (Kimmeridgian–Tithonian)
Saurischia, Sauropodomorpha, Sauropoda, Diplodocidae	Dicraeosaurus sattleri	Late Jurassic (150 Ma)	Tendaguru, Tanzania	~40 ft (12 m) long; size of a bus	Herbivore	Tendaguru Formation	East Africa (Tanzania)	Late Jurassic (Kimmeridgian–Tithonian)
Saurischia, Sauropodomorpha, Sauropoda, Diplodocidae	Diplodocus hallorum	Late Jurassic (150–145 Ma)	Morrison, New Mexico, Uinta Mountains, Colorado, USA	~95–110 ft (29–33.5 m) long; size of a jumbo jet	Herbivore	Morrison Formation; Dinosaur National Monument; Garden Park	North America (USA)	Late Jurassic (Kimmeridgian–Tithonian)
Saurischia, Sauropodomorpha, Sauropoda, Diplodocidae	Mamenchisaurus sinocanadorum	Late Jurassic (160 Ma)	Sichuan, China	~115 ft (35 m) long; size of a jumbo jet	Herbivore	Shishugou Formation	East Asia (China)	Late Jurassic (Oxfordian–Kimmeridgian)
Saurischia, Sauropodomorpha, Sauropoda, Diplodocidae	Supersaurus vivianae	Late Jurassic (150 Ma)	Morrison, Colorado, USA	~108–131 ft (33–40 m) long; size of a jumbo jet	Herbivore	Morrison Formation	North America (USA)	Late Jurassic (Kimmeridgian–Tithonian)
Saurischia, Sauropodomorpha, Sauropoda, Titanosauridae	Alamosaurus sanjuanensis	Late Cretaceous (70–65 Ma)	Ojo Alamo, New Mexico, USA	~70–100 ft (21–30 m) long; size of a large airplane	Herbivore	Ojo Alamo Formation	North America (USA)	Late Cretaceous (Maastrichtian)
Saurischia, Sauropodomorpha, Sauropoda, Titanosauridae	Dreadnoughtus schrani	Late Cretaceous (77 Ma)	Cerro Fortaleza, Argentina	~85 ft (26 m) long; size of a large airplane	Herbivore	Cerro Fortaleza Formation	South America (Argentina)	Late Cretaceous (Campanian)
Saurischia, Sauropodomorpha, Sauropoda, Titanosauridae	Saltasaurus loricatus	Late Cretaceous (70–65 Ma)	Lecho, Argentina	~40 ft (12 m) long; size of a bus	Herbivore	Lecho Formation	South America (Argentina)	Late Cretaceous (Maastrichtian)

Cerapoda – Beaked, Horned, and Armored: Chart Table

Clade	Name	Time	Locality	Size Comparison	Diet	Formation	Geographical	Geological
Ornithischia, Cerapoda, Ornithopoda, Fabrosauridae	Lesothosaurus diagnosticus	Early Jurassic (200 Ma)	Upper Elliot, Lesotho	~6.6 ft (2 m) long; size of a large dog	Herbivore	Upper Elliot Formation	Southern Africa (Lesotho)	Early Jurassic (Hettangian)
Ornithischia, Cerapoda, Ornithopoda, Fabrosauridae	Scutellosaurus lawleri	Early Jurassic (196 Ma)	Kayenta, Arizona, USA	~4 ft (1.2 m) long; size of a small dog	Herbivore	Kayenta Formation	North America (USA)	Early Jurassic (Sinemurian)
Ornithischia, Cerapoda, Ornithopoda, Heterodontosauridae	Echinodon becklesii	Early Cretaceous (140 Ma)	Purbeck, England	~2 ft (0.6 m) long; size of a small cat	Herbivore/Omnivore	Purbeck Group	Western Europe (England)	Early Cretaceous (Berriasian)
Ornithischia, Cerapoda, Ornithopoda, Heterodontosauridae	Heterodontosaurus tucki	Early Jurassic (200 Ma)	Upper Elliot, South Africa	~4 ft (1.2 m) long; size of a small dog	Herbivore/Omnivore	Upper Elliot Formation	Southern Africa (South Africa)	Early Jurassic (Hettangian)
Ornithischia, Cerapoda, Ornithopoda, Heterodontosauridae	Pisanosaurus mertii	Late Triassic (228 Ma)	Ischigualasto, Argentina	~3.3 ft (1 m) long; size of a small dog	Herbivore	Ischigualasto Formation	South America (Argentina)	Late Triassic (Carnian)
Ornithischia, Cerapoda, Ornithopoda, Hypsilophodontidae	Callovosaurus leedsi	Middle Jurassic (165 Ma)	Oxford, England	~11.5 ft (3.5 m) long; size of a large horse	Herbivore	Oxford Clay Formation	Western Europe (England)	Middle Jurassic (Callovian)
Ornithischia, Cerapoda, Ornithopoda, Hypsilophodontidae	Dryosaurus elderae	Late Jurassic (150 Ma)	Morrison, Utah, USA	~8–10 ft (2.4–3 m) long; size of a large dog	Herbivore	Morrison Formation	North America (USA)	Late Jurassic (Kimmeridgian–Tithonian)
Ornithischia, Cerapoda, Ornithopoda, Hypsilophodontidae	Hypsilophodon foxii	Early Cretaceous (125 Ma)	Isle of Wight, England	~6 ft (1.8 m) long; size of a large dog	Herbivore	Wessex Formation	Western Europe (England)	Early Cretaceous (Barremian)
Ornithischia, Cerapoda, Ornithopoda, Hypsilophodontidae	Nanosaurus agilis	Late Jurassic (150 Ma)	Morrison, Utah, USA	~6 ft (1.8 m) long; size of a large dog	Herbivore	Morrison Formation	North America (USA)	Late Jurassic (Kimmeridgian–Tithonian)
Ornithischia, Cerapoda, Ornithopoda, Hypsilophodontidae	Parksosaurus warreni	Late Cretaceous (76–65 Ma)	Horseshoe Canyon, Alberta, Canada	~8 ft (2.4 m) long; size of a large dog	Herbivore	Horseshoe Canyon Formation	North America (Canada)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ornithopoda, Hypsilophodontidae	Thescelosaurus garbanii	Late Cretaceous (66 Ma)	Hell Creek, Montana, USA	~11–13 ft (3.4–4 m) long; size of a horse	Herbivore	Hell Creek Formation	North America (USA)	Late Cretaceous (Maastrichtian)
Ornithischia, Cerapoda, Ornithopoda, Iguanodontidae	Camptosaurus dispar	Late Jurassic (150 Ma)	Morrison, Wyoming, USA	~20 ft (6 m) long; size of a large horse	Herbivore	Morrison Formation	North America (USA)	Late Jurassic (Kimmeridgian–Tithonian)
Ornithischia, Cerapoda, Ornithopoda, Iguanodontidae	Iguanodon bernissartensis	Early Cretaceous (125 Ma)	Bernissart, Belgium	~43 ft (13 m) long; size of an elephant	Herbivore	Wealden Group	Western Europe (Belgium, England)	Early Cretaceous (Barremian–Aptian)
Ornithischia, Cerapoda, Ornithopoda, Iguanodontidae	Mantellisaurus atherfieldensis	Early Cretaceous (125 Ma)	Isle of Wight, England	~23 ft (7 m) long; size of a large horse	Herbivore	Wessex Formation	Western Europe (England)	Early Cretaceous (Barremian)
Ornithischia, Cerapoda, Ornithopoda, Iguanodontidae	Muttaburrasaurus langdoni	Early Cretaceous (110 Ma)	Muttaburra, Australia	~26 ft (8 m) long; size of a large horse	Herbivore	Mackunda Formation	Australia	Early Cretaceous (Albian)
Ornithischia, Cerapoda, Ornithopoda, Iguanodontidae	Ouranosaurus nigeriensis	Early Cretaceous (115 Ma)	Gadoufaoua, Niger	~24 ft (7.3 m) long; size of a large horse	Herbivore	Elrhaz Formation	North Africa (Niger)	Early Cretaceous (Aptian–Albian)
Ornithischia, Cerapoda, Ornithopoda, Iguanodontidae	Probactrosaurus gobiensis	Early Cretaceous (110 Ma)	Dashuigou, Gobi Desert, China	~20 ft (6 m) long; size of a large horse	Herbivore	Dashuigou Formation	East Asia (China)	Early Cretaceous (Albian)
Ornithischia, Cerapoda, Ornithopoda, Iguanodontidae	Tenontosaurus dossi	Early Cretaceous (115 Ma)	Cloverly, Montana, USA	~20–26 ft (6–8 m) long; size of a large horse	Herbivore	Cloverly Formation	North America (USA)	Early Cretaceous (Aptian–Albian)
Ornithischia, Cerapoda, Ornithopoda, Hadrosauridae (Saurolophinae)	Bactrosaurus johnsoni	Late Cretaceous (80 Ma)	Iren Dabasu, China	~20 ft (6 m) long; size of a large horse	Herbivore	Iren Dabasu Formation	East Asia (China)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ornithopoda, Hadrosauridae (Saurolophinae)	Edmontosaurus regalis	Late Cretaceous (73–65 Ma)	Horseshoe Canyon, Alberta, Canada; Lance, Wyoming, USA	~40 ft (12 m) long; size of a bus	Herbivore	Horseshoe Canyon, Lance Formation	North America (Canada, USA)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ornithopoda, Hadrosauridae (Saurolophinae)	Hadrosaurus foulkii	Late Cretaceous (80 Ma)	Woodbury, New Jersey, USA	~30 ft (9 m) long; size of a large rhino	Herbivore	Woodbury Formation	North America (USA)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ornithopoda, Hadrosauridae (Saurolophinae)	Kritosaurus navajovius	Late Cretaceous (73 Ma)	Kirtland, New Mexico, USA	~30 ft (9 m) long; size of a large rhino	Herbivore	Kirtland Formation	North America (USA)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ornithopoda, Hadrosauridae (Saurolophinae)	Maiasaura peeblesorum	Late Cretaceous (76 Ma)	Two Medicine, Montana, USA	~30 ft (9 m) long; size of a large rhino	Herbivore	Two Medicine Formation	North America (USA)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ornithopoda, Hadrosauridae (Saurolophinae)	Prosaurolophus maximus	Late Cretaceous (75 Ma)	Dinosaur Park, Alberta, Canada	~26 ft (8 m) long; size of a large horse	Herbivore	Dinosaur Park Formation	North America (Canada)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ornithopoda, Hadrosauridae (Saurolophinae)	Saurolophus osborni	Late Cretaceous (70 Ma)	Horseshoe Canyon, Alberta, Canada; Nemegt, Mongolia	~33 ft (10 m) long; size of a large rhino	Herbivore	Horseshoe Canyon, Nemegt Formations	North America (Canada), East Asia (Mongolia)	Late Cretaceous (Maastrichtian)
Ornithischia, Cerapoda, Ornithopoda, Hadrosauridae (Saurolophinae)	Shantungosaurus giganteus	Late Cretaceous (78 Ma)	Shandong, China	~50 ft (15 m) long; size of a bus	Herbivore	Wangshi Group	East Asia (China)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ornithopoda, Hadrosauridae (Lambeosaurinae)	Corythosaurus casuarius	Late Cretaceous (77 Ma)	Dinosaur Park, Alberta, Canada; Lance, Wyoming, USA	~33 ft (10 m) long; size of a large rhino	Herbivore	Dinosaur Park, Lance Formation	North America (Canada, USA)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ornithopoda, Hadrosauridae (Lambeosaurinae)	Hypacrosaurus stebingeri	Late Cretaceous (75 Ma)	Two Medicine, Montana, USA	~30 ft (9 m) long; size of a large rhino	Herbivore	Two Medicine Formation	North America (USA)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ornithopoda, Hadrosauridae (Lambeosaurinae)	Lambeosaurus magnicristatus	Late Cretaceous (76 Ma)	Dinosaur Park, Alberta, Canada	~30 ft (9 m) long; size of a large rhino	Herbivore	Dinosaur Park Formation	North America (Canada)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ornithopoda, Hadrosauridae (Lambeosaurinae)	Olorotitan arharensis	Late Cretaceous (70 Ma)	Kundur, Russia	~40 ft (12 m) long; size of a bus	Herbivore	Udurchukan Formation	Eastern Europe (Russia)	Late Cretaceous (Maastrichtian)
Ornithischia, Cerapoda, Ornithopoda, Hadrosauridae (Lambeosaurinae)	Parasaurolophus walkeri	Late Cretaceous (76 Ma)	Dinosaur Park, Alberta, Canada	~33 ft (10 m) long; size of a large rhino	Herbivore	Dinosaur Park Formation	North America (Canada)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ornithopoda, Hadrosauridae (Lambeosaurinae)	Tsintaosaurus spinorhinus	Late Cretaceous (78 Ma)	Wangshi, Shandong, China	~33 ft (10 m) long; size of a large rhino	Herbivore	Wangshi Group	East Asia (China)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ceratopia, Pachycephalosauridae	Homalocephale calathocercos	Late Cretaceous (70 Ma)	Nemegt, Mongolia	~6 ft (1.8 m) long; size of a large dog	Herbivore	Nemegt Formation	East Asia (Mongolia)	Late Cretaceous (Maastrichtian)
Ornithischia, Cerapoda, Ceratopia, Pachycephalosauridae	Pachycephalosaurus wyomingensis	Late Cretaceous (70–65 Ma)	Hell Creek, Wyoming, USA	~15 ft (4.5 m) long; size of a large horse	Herbivore	Hell Creek Formation	North America (USA)	Late Cretaceous (Maastrichtian)
Ornithischia, Cerapoda, Ceratopia, Pachycephalosauridae	Prenocephale prenes	Late Cretaceous (70 Ma)	Nemegt, Mongolia	~7 ft (2.1 m) long; size of a large dog	Herbivore	Nemegt Formation	East Asia (Mongolia)	Late Cretaceous (Maastrichtian)
Ornithischia, Cerapoda, Ceratopia, Pachycephalosauridae	Stegoceras validum	Late Cretaceous (75 Ma)	Dinosaur Park, Alberta, Canada	~6.6 ft (2 m) long; size of a large dog	Herbivore	Dinosaur Park Formation	North America (Canada)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ceratopia, Psittacosauridae	Psittacosaurus meileyingensis	Early Cretaceous (125 Ma)	Yixian, Liaoning, China	~6.6 ft (2 m) long; size of a large dog	Herbivore	Yixian Formation	East Asia (China)	Early Cretaceous (Barremian–Aptian)
Ornithischia, Cerapoda, Ceratopia, Protoceratopidae	Bagaceratops rozhdestvenskyi	Late Cretaceous (80 Ma)	Barun Goyot, Mongolia	~3.3 ft (1 m) long; size of a small dog	Herbivore	Barun Goyot Formation	East Asia (Mongolia)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ceratopia, Protoceratopidae	Leptoceratops gracilis	Late Cretaceous (66 Ma)	Hell Creek, Montana, USA	~6.6 ft (2 m) long; size of a large dog	Herbivore	Hell Creek Formation	North America (USA)	Late Cretaceous (Maastrichtian)
Ornithischia, Cerapoda, Ceratopia, Protoceratopidae	Microceratus gobiensis	Late Cretaceous (80 Ma)	Minhe, Gobi Desert, Mongolia	~2 ft (0.6 m) long; size of a small cat	Herbivore	Minhe Formation	East Asia (Mongolia)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ceratopia, Protoceratopidae	Montanoceratops cerorhynchus	Late Cretaceous (70 Ma)	St. Mary River, Montana, USA	~10 ft (3 m) long; size of a large dog	Herbivore	St. Mary River Formation	North America (USA)	Late Cretaceous (Maastrichtian)
Ornithischia, Cerapoda, Ceratopia, Protoceratopidae	Protoceratops hellenikorhinus	Late Cretaceous (75 Ma)	Djadokhta, Mongolia	~6 ft (1.8 m) long; size of a large dog	Herbivore	Djadokhta Formation	East Asia (Mongolia)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ceratopia, Ceratopidae (long-frilled)	Anchiceratops ornatus	Late Cretaceous (73 Ma)	Horseshoe Canyon, Alberta, Canada	~16 ft (5 m) long; size of a large horse	Herbivore	Horseshoe Canyon Formation	North America (Canada)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ceratopia, Ceratopidae (long-frilled)	Arrhinoceratops brachyops	Late Cretaceous (70 Ma)	Horseshoe Canyon, Alberta, Canada	~20 ft (6 m) long; size of a large rhino	Herbivore	Horseshoe Canyon Formation	North America (Canada)	Late Cretaceous (Maastrichtian)
Ornithischia, Cerapoda, Ceratopia, Ceratopidae (long-frilled)	Chasmosaurus belli	Late Cretaceous (76 Ma)	Dinosaur Park, Alberta, Canada	~16 ft (5 m) long; size of a large horse	Herbivore	Dinosaur Park Formation	North America (Canada)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ceratopia, Ceratopidae (long-frilled)	Pentaceratops sternbergii	Late Cretaceous (75 Ma)	Kirtland, New Mexico, USA	~20 ft (6 m) long; size of a large rhino	Herbivore	Kirtland Formation	North America (USA)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ceratopia, Ceratopidae (long-frilled)	Torosaurus latus	Late Cretaceous (68–65 Ma)	Hell Creek, Montana, Laramie, Colorado, USA	~25 ft (7.6 m) long; size of a large rhino	Herbivore	Hell Creek Formation; Laramie Formation	North America (USA)	Late Cretaceous (Maastrichtian)
Ornithischia, Cerapoda, Ceratopia, Ceratopidae (long-frilled)	Triceratops horridus	Late Cretaceous (68–65 Ma)	Hell Creek, Montana, Lance, Wyoming, USA	~30 ft (9 m) long; size of a large rhino	Herbivore	Hell Creek Formation, Lance Formation	North America (USA)	Late Cretaceous (Maastrichtian)
Ornithischia, Cerapoda, Ceratopia, Ceratopidae (short-frilled)	Centrosaurus apertus	Late Cretaceous (76 Ma)	Dinosaur Park, Alberta, Canada	~20 ft (6 m) long; size of a large horse	Herbivore	Dinosaur Park Formation	North America (Canada)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ceratopia, Ceratopidae (short-frilled)	Nasutoceratops titusi	Late Cretaceous (76 Ma)	Kaiparowits, Utah, USA	~15 ft (4.5 m) long; size of a large horse	Herbivore	Kaiparowits Formation	North America (USA)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ceratopia, Ceratopidae (short-frilled)	Pachyrhinosaurus lakustai	Late Cretaceous (73–65 Ma)	Wapiti, Alberta, Canada; Laramie, Colorado, USA	~20 ft (6 m) long; size of a large horse	Herbivore	Wapiti Formation; Laramie Formation	North America (Canada, USA)	Late Cretaceous (Campanian)
Ornithischia, Cerapoda, Ceratopia, Ceratopidae (short-frilled)	Styracosaurus ovatus	Late Cretaceous (75 Ma)	Dinosaur Park, Alberta, Canada	~18 ft (5.5 m) long; size of a large horse	Herbivore	Dinosaur Park Formation	North America (Canada)	Late Cretaceous (Campanian)

Thyreophora – The Armored Tanks: Chart Table

Clade	Name	Time	Locality	Size Comparison	Diet	Formation	Geographical	Geological
Ornithischia, Thyreophora, Stegosauria, Huayangosauridae	Huayangosaurus taibaii	Middle Jurassic (165 Ma)	Zigong, Sichuan, China	~15 ft (4.5 m) long; size of a large horse	Herbivore	Lower Shaximiao Formation	East Asia (China)	Middle Jurassic (Callovian)
Ornithischia, Thyreophora, Stegosauria, Huayangosauridae	Tuojiangosaurus multispinus	Late Jurassic (160 Ma)	Zigong, Sichuan, China	~23 ft (7 m) long; size of a large rhino	Herbivore	Upper Shaximiao Formation	East Asia (China)	Late Jurassic (Oxfordian–Kimmeridgian)
Ornithischia, Thyreophora, Stegosauria, Stegosauridae	Kentrosaurus aethiopicus	Late Jurassic (155–150 Ma)	Tendaguru, Tanzania	~15 ft (4.5 m) long; size of a large horse	Herbivore	Tendaguru Formation	East Africa (Tanzania)	Late Jurassic (Kimmeridgian–Tithonian)
Ornithischia, Thyreophora, Stegosauria, Stegosauridae	Stegosaurus stenops	Late Jurassic (150–140 Ma)	Morrison, Wyoming, Uinta Mountains, USA; Lourinhã, Portugal	~33.1 ft (10.1 m) long; size of a bus	Herbivore	Morrison Formation; Dinosaur National Monument; Lourinhã Formation	North America (USA), Western Europe (Portugal)	Late Jurassic (Kimmeridgian–Tithonian)
Ornithischia, Thyreophora, Stegosauria, Stegosauridae	Wuerhosaurus ordosensis	Early Cretaceous (125 Ma)	Ordos Basin, Inner Mongolia, China	~23 ft (7 m) long; size of a large rhino	Herbivore	Ejinhoro Formation	East Asia (China)	Early Cretaceous (Aptian–Albian)
Ornithischia, Thyreophora, Ankylosauria, Scelidosauridae	Scelidosaurus harrisonii	Early Jurassic (190 Ma)	Charmouth, Dorset, England	~13 ft (4 m) long; size of a large horse	Herbivore	Charmouth Mudstone Formation	Western Europe (England)	Early Jurassic (Sinemurian)
Ornithischia, Thyreophora, Ankylosauria, Nodosauridae	Hylaeosaurus armatus	Early Cretaceous (135 Ma)	Tilgate Forest, England	~16 ft (5 m) long; size of a large horse	Herbivore	Grinstead Clay Formation	Western Europe (England)	Early Cretaceous (Valanginian)
Ornithischia, Thyreophora, Ankylosauria, Nodosauridae	Nodosaurus textilis	Late Cretaceous (100 Ma)	Frontier, Wyoming, USA	~20 ft (6 m) long; size of a large rhino	Herbivore	Frontier Formation	North America (USA)	Late Cretaceous (Cenomanian)
Ornithischia, Thyreophora, Ankylosauria, Nodosauridae	Panoplosaurus mirus	Late Cretaceous (76–65 Ma)	Dinosaur Park, Alberta, Canada	~23 ft (7 m) long; size of a large rhino	Herbivore	Dinosaur Park Formation	North America (Canada)	Late Cretaceous (Campanian)
Ornithischia, Thyreophora, Ankylosauria, Nodosauridae	Polacanthus foxii	Early Cretaceous (125 Ma)	Isle of Wight, England	~16 ft (5 m) long; size of a large horse	Herbivore	Wessex Formation	Western Europe (England)	Early Cretaceous (Barremian)
Ornithischia, Thyreophora, Ankylosauria, Nodosauridae	Sauropelta edwardsorum	Early Cretaceous (115 Ma)	Cloverly, Montana, USA	~25 ft (7.6 m) long; size of a large rhino	Herbivore	Cloverly Formation	North America (USA)	Early Cretaceous (Aptian–Albian)
Ornithischia, Thyreophora, Ankylosauria, Nodosauridae	Silvisaurus condrayi	Late Cretaceous (95 Ma)	Smoky Hill, Kansas, USA	~13 ft (4 m) long; size of a large horse	Herbivore	Dakota Formation	North America (USA)	Late Cretaceous (Cenomanian)
Ornithischia, Thyreophora, Ankylosauria, Nodosauridae	Struthiosaurus transylvanicus	Late Cretaceous (70 Ma)	Hațeg Basin, Romania	~10 ft (3 m) long; size of a large dog	Herbivore	Sânpetru Formation	Eastern Europe (Romania)	Late Cretaceous (Maastrichtian)
Ornithischia, Thyreophora, Ankylosauria, Ankylosauridae	Ankylosaurus magniventris	Late Cretaceous (68–65 Ma)	Hell Creek, Montana, USA	~31.5 ft (9.6 m) long; size of a bus	Herbivore	Hell Creek Formation	North America (USA)	Late Cretaceous (Maastrichtian)
Ornithischia, Thyreophora, Ankylosauria, Ankylosauridae	Euoplocephalus tutus	Late Cretaceous (76 Ma)	Dinosaur Park, Alberta, Canada	~20 ft (6 m) long; size of a large rhino	Herbivore	Dinosaur Park Formation	North America (Canada)	Late Cretaceous (Campanian)
Ornithischia, Thyreophora, Ankylosauria, Ankylosauridae	Saichania chulsanensis	Late Cretaceous (75 Ma)	Nemegt, Mongolia	~20 ft (6 m) long; size of a large rhino	Herbivore	Barun Goyot Formation	East Asia (Mongolia)	Late Cretaceous (Campanian)
Ornithischia, Thyreophora, Ankylosauria, Ankylosauridae	Talarurus plicatospineus	Late Cretaceous (75 Ma)	Bayan Shiree, Mongolia	~16 ft (5 m) long; size of a large horse	Herbivore	Bayan Shiree Formation	East Asia (Mongolia)	Late Cretaceous (Campanian)

Dinosaur and Pterosaur Classification Table

Join Thea Stilton, voiced by Sarah Edmondson, on a thrilling expedition through the ancient world of dinosaurs and pterosaurs! From soaring sky lords to earth-shaking giants, let’s uncover the secrets of these prehistoric marvels!

Name Means	Classification	Size Comparison	Place	Diet	Details
Pterosauria – Lords of the Ancient Skies
Dimorphodon macronyx: "Two-form tooth, large claw"	Order: Pterosauria, Suborder: Rhamphorhynchoidea, Family: Dimorphodontidae	~1 m wingspan, like a mighty eagle	England, ~200–190 Mya (Late Triassic–Early Jurassic)	Carnivore/Insectivore	Thea’s log: Found in the Lias Group’s ancient seas, this pterosaur’s big head and sharp teeth were perfect for snatching insects or small prey. Its two types of teeth made it a Jurassic standout!
Eudimorphodon ranzii: "True two-form tooth"	Order: Pterosauria, Suborder: Rhamphorhynchoidea, Family: Eudimorphodontidae	~1 m wingspan, like a swift hawk	Italy, ~210 Mya (Late Triassic)	Carnivore/Piscivore	Thea’s log: Discovered in Zorzino Limestone, this flier’s needle-like teeth snagged fish from Triassic seas. A clue to early pterosaur diversity in Europe!
Anurognathus ammoni: "Tailless jaw"	Order: Pterosauria, Suborder: Rhamphorhynchoidea, Family: Rhamphorhynchidae	~0.5 m wingspan, like a tiny bat	Germany, ~150 Mya (Late Jurassic)	Insectivore	Thea’s log: Darting through Solnhofen Limestone’s skies, this petite pterosaur gobbled insects like a modern bat. Its short tail was a rare trait!
Rhamphorhynchus etchesi: "Beak snout"	Order: Pterosauria, Suborder: Rhamphorhynchoidea, Family: Rhamphorhynchidae	~1.8 m wingspan, like a soaring seagull	England, ~150 Mya (Late Jurassic)	Piscivore	Thea’s log: From Kimmeridge Clay, its long tail and sharp teeth helped it skim fish from the sea. Wing membranes in fossils reveal its flight secrets!
Scaphognathus crassirostris: "Boat jaw, thick snout"	Order: Pterosauria, Suborder: Rhamphorhynchoidea, Family: Rhamphorhynchidae	~0.9 m wingspan, like a small hawk	Germany, ~150 Mya (Late Jurassic)	Carnivore/Piscivore	Thea’s log: Rare Solnhofen Limestone fossils show its robust jaw, perfect for snatching fish or small prey in Jurassic lagoons.
Sordes pilosus: "Hairy devil"	Order: Pterosauria, Suborder: Rhamphorhynchoidea, Family: Rhamphorhynchidae	~1 m wingspan, like a large crow	Kazakhstan, ~150 Mya (Late Jurassic)	Piscivore	Thea’s log: Karabastau Formation’s lake deposits reveal fuzzy pterosaurs! This one scooped fish with its sharp beak, a hairy marvel of the skies.
Dsungaripterus weii: "Junggar wing"	Order: Pterosauria, Suborder: Pterodactyloidea, Family: Dsungaripteridae	~3 m wingspan, like an albatross	China, ~120 Mya (Early Cretaceous)	Piscivore/Carnivore	Thea’s log: From Tugulu Group’s floodplains, its thick skull and curved beak cracked shells or caught fish. A tough flier in Asian skies!
Arthurdactylus conandoylei: "Arthur’s finger"	Order: Pterosauria, Suborder: Pterodactyloidea, Family: Pterodaustriidae	~4.6 m wingspan, like a small plane	Brazil, ~110 Mya (Early Cretaceous)	Piscivore	Thea’s log: Santana Formation’s coastal lagoons were home to this large pterosaur, diving for fish with its sharp beak. A South American sky lord!
Pterodaustro guinazui: "Southern wing"	Order: Pterosauria, Suborder: Pterodactyloidea, Family: Pterodaustriidae	~2.5 m wingspan, like a flamingo	Argentina, ~105 Mya (Early Cretaceous)	Filter-feeder	Thea’s log: Lagarcito Formation’s comb-toothed flier filter-fed like a flamingo, scooping tiny organisms from lakes. A Cretaceous marvel!
Cearadactylus atrox: "Ceará finger, fierce"	Order: Pterosauria, Suborder: Pterodactyloidea, Family: Pterodactylidae	~5 m wingspan, like a small aircraft	Brazil, ~110 Mya (Early Cretaceous)	Piscivore	Thea’s log: Santana Formation’s fierce coastal predator, its large jaws snagged fish in Cretaceous seas. A true sky hunter!
Pteranodon sternbergi: "Toothless wing"	Order: Pterosauria, Suborder: Pterodactyloidea, Family: Ornithocheiridae	~6–7 m wingspan, like a hang glider	USA, ~85 Mya (Late Cretaceous)	Piscivore	Thea’s log: Soaring over Niobrara Formation’s seas, its crest and toothless beak made it a master fish-catcher. An iconic sky lord!
Quetzalcoatlus lawsoni: "Feathered serpent god"	Order: Pterosauria, Suborder: Pterodactyloidea, Family: Ornithocheiridae	~10–17 m wingspan, like a small plane	USA, ~70 Mya (Late Cretaceous)	Carnivore/Scavenger	Thea’s log: Javelina Formation’s giant, one of the largest fliers ever, stalked prey or scavenged on land. Ruler of Late Cretaceous skies!
Theropoda – The Predatory Elite
Coelophysis bauri: "Hollow form"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Family: Podokesauridae	~3 m long, like a small car	USA, ~210 Mya (Late Triassic)	Carnivore	Thea’s log: Chinle Formation’s nimble predator hunted small animals with sharp teeth and speedy legs. A Triassic trailblazer!
Procompsognathus triassicus: "Before elegant jaw"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Family: Podokesauridae	~1 m long, like a large dog	Germany, ~210 Mya (Late Triassic)	Carnivore	Thea’s log: Löwenstein Formation’s speedy hunter chased lizards and insects in Triassic forests. A tiny terror!
Saltopus elginensis: "Hopping foot"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Family: Podokesauridae	~0.6 m long, like a small cat	Scotland, ~230 Mya (Late Triassic)	Carnivore	Thea’s log: Lossiemouth Sandstone’s lightweight predator zipped after insects in arid landscapes. A hopping hunter!
Coelurus fragilis: "Hollow tail"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Family: Coeluridae	~2 m long, like a motorcycle	USA, ~150 Mya (Late Jurassic)	Carnivore	Thea’s log: Morrison Formation’s slender predator hunted small prey with hollow bones for speed. A Jurassic sprinter!
Moros intrepidus: "Doom, fearless"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Family: Coeluridae	~1.8 m long, like a large dog	USA, ~96 Mya (Early Cretaceous)	Carnivore	Thea’s log: Cedar Mountain Formation’s bold hunter, bridging early and advanced coelurosaurs. Fearless indeed!
Compsognathus longipes: "Elegant jaw"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Family: Compsognathidae	~1.4 m long, like a large turkey	Germany, ~150 Mya (Late Jurassic)	Carnivore	Thea’s log: Solnhofen Limestone’s petite predator ate lizards, with fossils showing gut contents. A dainty Jurassic hunter!
Sinosauropteryx lingyuanensis: "Chinese lizard wing"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Family: Compsognathidae	~1 m long, like a small dog	China, ~125 Mya (Early Cretaceous)	Carnivore	Thea’s log: Yixian Formation’s feathered dinosaur, a key bird link, hunted in lake-filled forests. A feathery find!
Dromiceiomimus samueli: "Emu mimic"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Family: Ornithomimidae	~3.5 m long, like a small car	Canada, ~75 Mya (Late Cretaceous)	Omnivore	Thea’s log: Dinosaur Park Formation’s ostrich-like sprinter ate plants and small animals in floodplains. Speedy and versatile!
Gallimimus bullatus: "Chicken mimic"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Family: Ornithomimidae	~6 m long, like a pickup truck	Mongolia, ~70 Mya (Late Cretaceous)	Omnivore	Thea’s log: Nemegt Formation’s long-necked runner foraged in river systems. A Cretaceous speedster!
Ornithomimus velox: "Bird mimic, swift"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Family: Ornithomimidae	~3.8 m long, like a small car	USA, ~75 Mya (Late Cretaceous)	Omnivore	Thea’s log: Denver Formation’s fast runner ate plants and insects in plains. A swift bird mimic!
Struthiomimus altus: "Ostrich mimic, tall"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Family: Ornithomimidae	~4 m long, like a small van	Canada, ~75 Mya (Late Cretaceous)	Omnivore	Thea’s log: Dinosaur Park Formation’s long-legged dinosaur fed opportunistically in floodplains. Tall and fast!
Deinocheirus mirificus: "Terrible hand"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Family: Deinocheiridae	~11.5 m long, like a school bus	Mongolia, ~70 Mya (Late Cretaceous)	Omnivore	Thea’s log: Nemegt Formation’s bizarre, hump-backed giant with huge arms ate plants and fish. A strange discovery!
Oviraptor philoceratops: "Egg thief, horn lover"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Maniraptoria, Family: Oviraptoridae	~2 m long, like a large dog	Mongolia, ~75 Mya (Late Cretaceous)	Omnivore	Thea’s log: Djadochta Formation’s beaked dinosaur, wrongly called an egg thief, ate plants and small prey. A misunderstood marvel!
Therizinosaurus cheloniformis: "Scythe lizard, turtle form"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Maniraptoria, Family: Therizinosauridae	~10 m long, like a school bus	Mongolia, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Nemegt Formation’s odd theropod with massive claws pulled down vegetation. A plant-eating predator!
Stenonychosaurus inequalis: "Narrow claw lizard"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Maniraptoria, Family: Saurornithoididae	~2 m long, like a large dog	Canada, ~75 Mya (Late Cretaceous)	Carnivore	Thea’s log: Dinosaur Park Formation’s brainy predator hunted with sharp claws and keen senses. A smart stalker!
Troodon formosus: "Wounding tooth"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Maniraptoria, Family: Saurornithoididae	~2.4 m long, like a small car	USA, ~75 Mya (Late Cretaceous)	Carnivore	Thea’s log: Two Medicine Formation’s smart, possibly nocturnal hunter preyed on small animals. A clever Cretaceous carnivore!
Bambiraptor feinbergi: "Bambi thief"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Maniraptoria, Family: Dromaeosauridae	~1 m long, like a small dog	USA, ~75 Mya (Late Cretaceous)	Carnivore	Thea’s log: Two Medicine Formation’s feathered raptor, named for its small size, hunted with deadly precision. A tiny terror!
Deinonychus antirrhopus: "Terrible claw"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Maniraptoria, Family: Dromaeosauridae	~3.4 m long, like a small car	USA, ~110 Mya (Early Cretaceous)	Carnivore	Thea’s log: Cloverly Formation’s pack hunter used sickle-shaped claws to tackle larger prey. A fierce team player!
Dromaeosaurus albertensis: "Running lizard"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Maniraptoria, Family: Dromaeosauridae	~2 m long, like a large dog	Canada, ~75 Mya (Late Cretaceous)	Carnivore	Thea’s log: Dinosaur Park Formation’s raptor had strong jaws for biting small dinosaurs. A swift predator!
Saurornitholestes sullivani: "Lizard-bird thief"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Maniraptoria, Family: Dromaeosauridae	~1.8 m long, like a large dog	USA, ~75 Mya (Late Cretaceous)	Carnivore	Thea’s log: Two Medicine Formation’s feathered raptor hunted small prey, a bird-like hunter!
Velociraptor osmolskae: "Swift thief"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Maniraptoria, Family: Dromaeosauridae	~2 m long, like a large dog	Mongolia, ~75 Mya (Late Cretaceous)	Carnivore	Thea’s log: Djadochta Formation’s desert dunes hosted this feathered predator, famous for its speed and sickle claws. A star hunter!
Archaeopteryx albersdoerferi: "Ancient wing"	Order: Saurischia, Suborder: Theropoda, Infraorder: Coelurosauria, Maniraptoria, Family: Archaeopterygidae	~0.5 m long, like a small bird	Germany, ~150 Mya (Late Jurassic)	Carnivore	Thea’s log: Solnhofen Limestone’s feathered fossils link dinosaurs to birds. It hunted insects in lagoon settings. A key discovery!
Ceratosaurus nasicornis: "Horned lizard, nose horn"	Order: Saurischia, Suborder: Theropoda, Infraorder: Ceratosauria, Family: Ceratosauridae	~6 m long, like a small bus	USA, ~150 Mya (Late Jurassic)	Carnivore	Thea’s log: Morrison Formation’s horned predator hunted with blade-like teeth in floodplains. A fierce Jurassic hunter!
Dilophosaurus wetherilli: "Two-crested lizard"	Order: Saurischia, Suborder: Theropoda, Infraorder: Ceratosauria, Family: Ceratosauridae	~7 m long, like a small bus	USA, ~190 Mya (Early Jurassic)	Carnivore	Thea’s log: Kayenta Formation’s crested hunter preyed on smaller dinosaurs by ancient rivers. A flashy predator!
Elaphrosaurus bambergi: "Lightweight lizard"	Order: Saurischia, Suborder: Theropoda, Infraorder: Ceratosauria, Family: Ceratosauridae	~6 m long, like a small bus	Tanzania, ~150 Mya (Late Jurassic)	Carnivore	Thea’s log: Tendaguru Formation’s slender, fast predator chased smaller prey in African plains. A speedy hunter!
Eustreptospondylus oxoniensis: "Well-curved vertebra"	Order: Saurischia, Suborder: Theropoda, Infraorder: Carnosauria, Family: Megalosauridae	~7 m long, like a small bus	England, ~160 Mya (Late Jurassic)	Carnivore	Thea’s log: Oxford Clay’s coastal predator tackled large prey near Jurassic shores. A powerful hunter!
Giganotosaurus carolinii: "Giant southern lizard"	Order: Saurischia, Suborder: Theropoda, Infraorder: Carnosauria, Family: Megalosauridae	~12–13 m long, like a large bus	Argentina, ~100 Mya (Early Cretaceous)	Carnivore	Thea’s log: Candeleros Formation’s massive predator, rivaling T. rex, hunted sauropods in South America. A colossal carnivore!
Poekilopleuron bucklandii: "Varied rib"	Order: Saurischia, Suborder: Theropoda, Infraorder: Carnosauria, Family: Megalosauridae	~7 m long, like a small bus	France, ~165 Mya (Middle Jurassic)	Carnivore	Thea’s log: Calcaire de Caen’s predator used strong jaws to take down prey in European forests. A Jurassic giant!
Proceratosaurus bradleyi: "Before horn lizard"	Order: Saurischia, Suborder: Theropoda, Infraorder: Carnosauria, Family: Megalosauridae	~3 m long, like a small car	England, ~165 Mya (Middle Jurassic)	Carnivore	Thea’s log: Great Oolite Group’s early tyrannosaur relative hunted small dinosaurs. A cunning predator!
Allosaurus europaeus: "Different lizard"	Order: Saurischia, Suborder: Theropoda, Infraorder: Carnosauria, Family: Allosauridae	~12 m long, like a large van	Portugal, USA, ~150 Mya (Late Jurassic)	Carnivore	Thea’s log: Lourinhã, Morrison Formation’s top predator hunted sauropods with powerful bites in floodplains. A Jurassic titan!
Yangchuanosaurus zigongensis: "Yangchuan lizard"	Order: Saurischia, Suborder: Theropoda, Infraorder: Carnosauria, Family: Allosauridae	~8 m long, like a large van	China, ~160 Mya (Late Jurassic)	Carnivore	Thea’s log: Shaximiao Formation’s Asian predator, like Allosaurus, hunted in forested floodplains. A fierce hunter!
Acrocanthosaurus atokensis: "High-spined lizard"	Order: Saurischia, Suborder: Theropoda, Infraorder: Carnosauria, Family: Spinosauridae	~11 m long, like a school bus	USA, ~110 Mya (Early Cretaceous)	Carnivore	Thea’s log: Antlers Formation’s sail-backed predator hunted large dinosaurs in North American plains. A towering terror!
Spinosaurus aegyptiacus: "Spine lizard, Egyptian"	Order: Saurischia, Suborder: Theropoda, Infraorder: Carnosauria, Family: Spinosauridae	~14–18 m long, like a double-decker bus	Egypt, Morocco, ~95 Mya (Late Cretaceous)	Carnivore/Piscivore	Thea’s log: Kem Kem Beds’ sail-backed giant fished and hunted in river systems. A prehistoric powerhouse!
Albertosaurus sarcophagus: "Alberta lizard, flesh-eater"	Order: Saurischia, Suborder: Theropoda, Infraorder: Carnosauria, Family: Tyrannosauridae	~9 m long, like a large van	Canada, ~70 Mya (Late Cretaceous)	Carnivore	Thea’s log: Horseshoe Canyon Formation’s T. rex cousin hunted hadrosaurs in floodplains. A fierce predator!
Alioramus altai: "Different branch"	Order: Saurischia, Suborder: Theropoda, Infraorder: Carnosauria, Family: Tyrannosauridae	~6 m long, like a small bus	Mongolia, ~70 Mya (Late Cretaceous)	Carnivore	Thea’s log: Nemegt Formation’s slender tyrannosaur hunted in Asian river systems. A unique hunter!
Daspletosaurus horneri: "Frightful lizard"	Order: Saurischia, Suborder: Theropoda, Infraorder: Carnosauria, Family: Tyrannosauridae	~9 m long, like a large van	USA, ~75 Mya (Late Cretaceous)	Carnivore	Thea’s log: Two Medicine Formation’s robust predator took on large herbivores. A fearsome beast!
Tarbosaurus bataar: "Alarming lizard, hero"	Order: Saurischia, Suborder: Theropoda, Infraorder: Carnosauria, Family: Tyrannosauridae	~10 m long, like a school bus	Mongolia, ~70 Mya (Late Cretaceous)	Carnivore	Thea’s log: Nemegt Formation’s Asian T. rex relative dominated river ecosystems. A mighty hunter!
Tyrannosaurus rex: "Tyrant lizard king"	Order: Saurischia, Suborder: Theropoda, Infraorder: Carnosauria, Family: Tyrannosauridae	~12–13 m long, like a large bus	USA, ~68 Mya (Late Cretaceous)	Carnivore	Thea’s log: Hell Creek Formation’s apex predator crushed bones with massive jaws. The king of dinosaurs!
Sauropodomorpha – The Gentle Giants
Herrerasaurus ischigualastensis: "Herrera’s lizard"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Prosauropoda, Family: Herrerasauridae	~4–6 m long, like a small bus	Argentina, ~230 Mya (Late Triassic)	Carnivore	Thea’s log: Ischigualasto Formation’s early dinosaur hunted smaller reptiles in arid plains. A Triassic pioneer!
Sanjuansaurus gordilloi: "San Juan lizard"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Prosauropoda, Family: Herrerasauridae	~3 m long, like a small car	Argentina, ~230 Mya (Late Triassic)	Carnivore	Thea’s log: Ischigualasto Formation’s smaller predator chased prey in Triassic landscapes. A swift hunter!
Smurfette (Smurfs (2025)): "Little blue female" (Fictional)	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Prosauropoda, Family: Herrerasauridae	~0.19 m (7.5 inches), like a small doll (Fictional)	Belgium (Fictional), 2025 (Modern)	Omnivore (Fictional)	Thea’s log: Not a dinosaur! This Smurfs 2025 movie character, voiced by Rihanna, leads a magical adventure to rescue Papa Smurf. A modern mystery in our dino files!
Staurikosaurus pricei: "Southern cross lizard"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Prosauropoda, Family: Herrerasauridae	~2 m long, like a large dog	Brazil, ~230 Mya (Late Triassic)	Carnivore	Thea’s log: Santa Maria Formation’s early predator hunted small animals in Triassic forests. A southern star!
Anchisaurus polyzelus: "Near lizard"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Prosauropoda, Family: Anchisauridae	~2 m long, like a large dog	USA, ~190 Mya (Early Jurassic)	Herbivore	Thea’s log: Portland Formation’s small plant-eater, an early sauropodomorph grazed North America. A gentle pioneer!
Efraasia minor: "Efraasia, small"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Prosauropoda, Family: Anchisauridae	~2.5 m long, like a small car	Germany, ~210 Mya (Late Triassic)	Herbivore	Thea’s log: Löwenstein Formation’s early herbivore munched low vegetation in Triassic forests. A tiny titan!
Eoraptor lunensis: "Dawn thief"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Prosauropoda, Family: Anchisauridae	~1 m long, like a small dog	Argentina, ~230 Mya (Late Triassic)	Omnivore	Thea’s log: Ischigualasto Formation’s primitive dinosaur ate plants and small animals. An ancient adventurer!
Thecodontosaurus antiquus: "Socket-toothed lizard, ancient"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Prosauropoda, Family: Anchisauridae	~2.5 m long, like a small car	England, ~210 Mya (Late Triassic)	Herbivore	Thea’s log: Magnesian Conglomerate’s early plant-eater grazed Triassic woodlands. A prehistoric forager!
Massospondylus kaalae: "Longer vertebra"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Prosauropoda, Family: Plateosauridae	~4–6 m long, like a small bus	South Africa, ~190 Mya (Early Jurassic)	Herbivore	Thea’s log: Elliot Formation’s plant-eater roamed Jurassic plains, possibly rearing young in nests. A caring giant!
Mussaurus patagonicus: "Mouse lizard"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Prosauropoda, Family: Plateosauridae	~3 m long (juvenile), like a small car	Argentina, ~190 Mya (Early Jurassic)	Herbivore	Thea’s log: Laguna Colorada Formation’s juvenile fossils suggest larger adults grazed South America. A growing giant!
Plateosaurus gracilis: "Broad lizard, slender"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Prosauropoda, Family: Plateosauridae	~5–8 m long, like a large van	Germany, ~210 Mya (Late Triassic)	Herbivore	Thea’s log: Löwenstein Formation’s common plant-eater browsed high vegetation with its long neck. A Triassic titan!
Riojasaurus incertus: "Rioja lizard, uncertain"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Prosauropoda, Family: Melanorosauridae	~10 m long, like a school bus	Argentina, ~210 Mya (Late Triassic)	Herbivore	Thea’s log: Los Colorados Formation’s large herbivore, a step toward giant sauropods. A massive muncher!
Barapasaurus tagorei: "Big-legged lizard"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Cetiosauridae	~14 m long, like a large bus	India, ~190 Mya (Early Jurassic)	Herbivore	Thea’s log: Kota Formation’s early sauropod grazed high trees in Jurassic Asia. A towering plant-eater!
Cetiosaurus oxoniensis: "Whale lizard"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Cetiosauridae	~16 m long, like a double-decker bus	England, ~165 Mya (Middle Jurassic)	Herbivore	Thea’s log: Oxford Clay’s massive plant-eater roamed Jurassic Europe, feasting on ferns. A gentle giant!
Brachiosaurus altithorax: "Arm lizard, high chest"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Brachiosauridae	~25 m long, like a train carriage	USA, India, ~150 Mya (Late Jurassic)	Herbivore	Thea’s log: Morrison, Kota Formation’s towering giant reached treetops with its long neck. A skyscraping sauropod!
Sauroposeidon proteles: "Earthquake lizard, perfect"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Brachiosauridae	~28 m long, like a blue whale	USA, ~110 Mya (Early Cretaceous)	Herbivore	Thea’s log: Antlers Formation’s colossal sauropod browsed high vegetation. An earth-shaking giant!
Camarasaurus supremus: "Chambered lizard, supreme"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Camarasauridae	~18 m long, like a large bus	USA, ~150 Mya (Late Jurassic)	Herbivore	Thea’s log: Morrison Formation’s common sauropod chewed tough plants with its boxy skull. A sturdy giant!
Euhelopus zdanskyi: "Good marsh foot"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Camarasauridae	~15 m long, like a double-decker bus	China, ~120 Mya (Early Cretaceous)	Herbivore	Thea’s log: Mengyin Formation’s plant-eater thrived in Asian wetlands. A marsh-loving muncher!
Opisthocoelicaudia skarzynskii: "Rear hollow tail"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Camarasauridae	~12 m long, like a large van	Mongolia, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Nemegt Formation’s sauropod grazed in river systems with a unique tail structure. A mysterious giant!
Apatosaurus ajax: "Deceptive lizard"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Diplodocidae	~22 m long, like a train carriage	USA, ~150 Mya (Late Jurassic)	Herbivore	Thea’s log: Morrison Formation’s whip-tailed giant grazed floodplains with its long neck. A deceptive giant!
Dicraeosaurus sattleri: "Forked lizard"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Diplodocidae	~12 m long, like a large van	Tanzania, ~150 Mya (Late Jurassic)	Herbivore	Thea’s log: Tendaguru Formation’s smaller sauropod fed on low plants in African plains. A compact giant!
Diplodocus hallorum: "Double beam"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Diplodocidae	~29.5 m long, like a train carriage	USA, ~150 Mya (Late Jurassic)	Herbivore	Thea’s log: Morrison Formation’s long-tailed sauropod may have used its whip-like tail as a weapon. A lengthy legend!
Mamenchisaurus sinocanadorum: "Mamenchi lizard"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Diplodocidae	~26 m long, like a blue whale	China, ~160 Mya (Late Jurassic)	Herbivore	Thea’s log: Shaximiao Formation’s long-necked giant reached high trees in Asian forests. A towering titan!
Supersaurus vivianae: "Super lizard"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Diplodocidae	~34 m long, like a train	USA, ~150 Mya (Late Jurassic)	Herbivore	Thea’s log: Morrison Formation’s enormous sauropod, one of the longest dinosaurs known. A super-sized star!
Alamosaurus sanjuanensis: "Alamo lizard"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Titanosauridae	~20 m long, like a large bus	USA, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Javelina Formation’s massive titanosaur roamed North American plains. A colossal grazer!
Dreadnoughtus schrani: "Fears nothing"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Titanosauridae	~26 m long, like a blue whale	Argentina, ~80 Mya (Late Cretaceous)	Herbivore	Thea’s log: Cerro Fortaleza Formation’s giant, one of the heaviest dinosaurs, grazed South America. A fearless feeder!
Saltasaurus loricatus: "Salta lizard, armored"	Order: Saurischia, Suborder: Sauropodomorpha, Infraorder: Sauropoda, Family: Titanosauridae	~12 m long, like a large van	Argentina, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Lecho Formation’s armored titanosaur, its bony plates offered protection. A shielded giant!
Cerapoda – Beaked, Horned, and Armored
Lesothosaurus diagnosticus: "Lesotho lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Fabrosauridae	~1 m long, like a small dog	Lesotho, ~190 Mya (Early Jurassic)	Herbivore	Thea’s log: Elliot Formation’s small, agile plant-eater darted through African forests. A speedy grazer!
Scutellosaurus lawleri: "Little shield lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Fabrosauridae	~1.2 m long, like a large dog	USA, ~190 Mya (Early Jurassic)	Herbivore	Thea’s log: Kayenta Formation’s armored ornithopod had bony plates for early defense. A shielded sprinter!
Echinodon becklesii: "Spiny tooth"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Heterodontosauridae	~0.6 m long, like a small cat	England, ~140 Mya (Early Cretaceous)	Herbivore	Thea’s log: Purbeck Group’s tiny plant-eater, its varied teeth suggest a mixed diet. A spiky surprise!
Heterodontosaurus tucki: "Different-toothed lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Heterodontosauridae	~1.2 m long, like a large dog	South Africa, ~190 Mya (Early Jurassic)	Herbivore	Thea’s log: Elliot Formation’s small dinosaur, its tusks may have been for display or defense. A toothy treasure!
Pisanosaurus mertii: "Pisano’s lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Heterodontosauridae	~1 m long, like a small dog	Argentina, ~230 Mya (Late Triassic)	Herbivore	Thea’s log: Ischigualasto Formation’s early ornithischian grazed in Triassic plains. An ancient herbivore!
Callovosaurus leedsi: "Callovian lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hypsilophodontidae	~2.5 m long, like a small car	England, ~165 Mya (Middle Jurassic)	Herbivore	Thea’s log: Oxford Clay’s fast plant-eater roamed European forests. A Jurassic jogger!
Dryosaurus elderae: "Oak lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hypsilophodontidae	~3 m long, like a small car	USA, ~150 Mya (Late Jurassic)	Herbivore	Thea’s log: Morrison Formation’s agile herbivore fled predators in floodplains. A speedy plant-eater!
Hypsilophodon foxii: "High-ridge tooth"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hypsilophodontidae	~2 m long, like a large dog	England, ~125 Mya (Early Cretaceous)	Herbivore	Thea’s log: Wessex Formation’s speedy plant-eater darted through Cretaceous forests. A nimble nibbler!
Nanosaurus agilis: "Dwarf lizard, agile"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hypsilophodontidae	~2 m long, like a large dog	USA, ~150 Mya (Late Jurassic)	Herbivore	Thea’s log: Morrison Formation’s small herbivore grazed in North American plains. A tiny trailblazer!
Parksosaurus warreni: "Park’s lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hypsilophodontidae	~2.5 m long, like a small car	Canada, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Horseshoe Canyon Formation’s fast runner fed in Late Cretaceous floodplains. A speedy survivor!
Thescelosaurus garbanii: "Marvelous lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hypsilophodontidae	~3.5 m long, like a small car	USA, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Hell Creek Formation’s sturdy plant-eater thrived in diverse ecosystems. A marvelous muncher!
Camptosaurus dispar: "Flexible lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Iguanodontidae	~6 m long, like a small bus	USA, ~150 Mya (Late Jurassic)	Herbivore	Thea’s log: Morrison Formation’s early iguanodont grazed floodplains with strong jaws. A flexible feeder!
Iguanodon bernissartensis: "Iguana tooth"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Iguanodontidae	~12 m long, like a large van	Belgium, ~125 Mya (Early Cretaceous)	Herbivore	Thea’s log: Wealden Group’s large plant-eater, its thumb spikes may have been for defense. A spiky giant!
Mantellisaurus atherfieldensis: "Mantell’s lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Iguanodontidae	~7 m long, like a small bus	England, ~125 Mya (Early Cretaceous)	Herbivore	Thea’s log: Wealden Group’s agile herbivore roamed European forests. A nimble grazer!
Muttaburrasaurus langdoni: "Muttaburra lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Iguanodontidae	~8 m long, like a large van	Australia, ~100 Mya (Early Cretaceous)	Herbivore	Thea’s log: Allaru Mudstone’s plant-eater may have had a nasal crest for calls. A vocal veggie-eater!
Ouranosaurus nigeriensis: "Brave lizard, Niger"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Iguanodontidae	~8 m long, like a large van	Niger, ~110 Mya (Early Cretaceous)	Herbivore	Thea’s log: Elrhaz Formation’s sail-backed herbivore grazed in African river systems. A bold browser!
Probactrosaurus gobiensis: "Before horned lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Iguanodontidae	~6 m long, like a small bus	China, ~100 Mya (Early Cretaceous)	Herbivore	Thea’s log: Dashuigou Formation’s early hadrosaur relative fed in Asian plains. A prehistoric pioneer!
Tenontosaurus dossi: "Sinew lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Iguanodontidae	~7 m long, like a small bus	USA, ~110 Mya (Early Cretaceous)	Herbivore	Thea’s log: Cloverly Formation’s sturdy plant-eater, often prey for Deinonychus. A tough grazer!
Bactrosaurus johnsoni: "Club lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~6 m long, like a small bus	China, ~95 Mya (Late Cretaceous)	Herbivore	Thea’s log: Iren Dabasu Formation’s early hadrosaur grazed Asian plains. A duck-billed delight!
Edmontosaurus regalis: "Edmonton lizard, royal"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~9 m long, like a large van	Canada, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Horseshoe Canyon Formation’s duck-billed dinosaur grazed in herds. A royal roamer!
Hadrosaurus foulkii: "Bulky lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~8 m long, like a large van	USA, ~80 Mya (Late Cretaceous)	Herbivore	Thea’s log: Woodbury Formation’s early hadrosaur fed in coastal plains. A bulky browser!
Kritosaurus navajovius: "Separated lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~9 m long, like a large van	USA, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Kirtland Formation’s duck-bill grazed North American plains. A herd hero!
Maiasaura peeblesorum: "Good mother lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~9 m long, like a large van	USA, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Two Medicine Formation’s nurturing hadrosaur cared for young in nests. A loving legend!
Prosaurolophus maximus: "Before crested lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~9 m long, like a large van	Canada, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Dinosaur Park Formation’s duck-bill lived in large herds. A social superstar!
Saurolophus osborni: "Crested lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~9 m long, like a large van	Canada, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Horseshoe Canyon Formation’s crested hadrosaur grazed in floodplains. A crested champion!
Shantungosaurus giganteus: "Shandong lizard, giant"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~15 m long, like a double-decker bus	China, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Xingezhuang Formation’s massive hadrosaur, one of the largest duck-bills. A giant grazer!
Corythosaurus casuarius: "Helmet lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hadrosauridae (Lambeosaurinae)	~9 m long, like a large van	Canada, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Dinosaur Park Formation’s crested hadrosaur, its crest may have amplified calls. A vocal virtuoso!
Hypacrosaurus stebingeri: "Near highest lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hadrosauridae (Lambeosaurinae)	~9 m long, like a large van	USA, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Two Medicine Formation’s crested hadrosaur lived in North American plains. A high-flying herbivore!
Lambeosaurus magnicristatus: "Lambe’s lizard, large crest"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hadrosauridae (Lambeosaurinae)	~9 m long, like a large van	Canada, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Dinosaur Park Formation’s crested hadrosaur, its large crest was for display. A flashy feeder!
Olorotitan arharensis: "Swan giant"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hadrosauridae (Lambeosaurinae)	~8 m long, like a large van	Russia, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Udurchukan Formation’s crested hadrosaur grazed in Asian plains. A graceful giant!
Parasaurolophus walkeri: "Near crested lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hadrosauridae (Lambeosaurinae)	~10.3 m long, like a large van	Canada, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Dinosaur Park Formation’s tube-crested hadrosaur produced loud calls. A musical marvel!
Tsintaosaurus spinorhinus: "Qingdao lizard, spine nose"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ornithopoda, Family: Hadrosauridae (Lambeosaurinae)	~8 m long, like a large van	China, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Jingangkou Formation’s crested hadrosaur thrived in Asian ecosystems. A spiky singer!
Homalocephale calathocercos: "Level head, horned tail"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Pachycephalosauridae	~2 m long, like a large dog	Mongolia, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Nemegt Formation’s dome-headed dinosaur may have head-butted rivals. A tough competitor!
Pachycephalosaurus wyomingensis: "Thick-headed lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Pachycephalosauridae	~4.5 m long, like a small car	USA, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Hell Creek Formation’s thick-skulled dinosaur likely used its dome for combat. A headstrong herbivore!
Prenocephale prenes: "Sloping head"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Pachycephalosauridae	~2 m long, like a large dog	Mongolia, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Nemegt Formation’s dome-headed dinosaur roamed Asian river systems. A sloped-skull star!
Stegoceras validum: "Roof horn, strong"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Pachycephalosauridae	~2 m long, like a large dog	Canada, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Dinosaur Park Formation’s small pachycephalosaur likely head-butted competitors. A sturdy striker!
Psittacosaurus meileyingensis: "Parrot lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Psittacosauridae	~2 m long, like a large dog	China, ~120 Mya (Early Cretaceous)	Herbivore	Thea’s log: Yixian Formation’s beaked dinosaur munched plants with parrot-like jaws. A feathered friend!
Bagaceratops rozhdestvenskyi: "Small horned face"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Protoceratopidae	~1.8 m long, like a large dog	Mongolia, ~80 Mya (Late Cretaceous)	Herbivore	Thea’s log: Barun Goyot Formation’s small ceratopsian grazed in desert environments. A tiny titan!
Leptoceratops gracilis: "Slender horned face"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Protoceratopidae	~2 m long, like a large dog	USA, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Hell Creek Formation’s small ceratopsian fed in North American plains. A slender survivor!
Microceratus gobiensis: "Tiny horned"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Protoceratopidae	~0.6 m long, like a small cat	Mongolia, ~80 Mya (Late Cretaceous)	Herbivore	Thea’s log: Minhe Formation’s tiny ceratopsian darted through Asian plains. A pint-sized plant-eater!
Montanoceratops cerorhynchus: "Montana horned face"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Protoceratopidae	~2.5 m long, like a small car	USA, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: St. Mary River Formation’s small ceratopsian grazed in North America. A mountain muncher!
Protoceratops hellenikorhinus: "First horned face"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Protoceratopidae	~2 m long, like a large dog	Mongolia, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Djadochta Formation’s early ceratopsian lived in desert ecosystems. A prehistoric pioneer!
Anchiceratops ornatus: "Near horned face, ornate"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Ceratopidae (long-frilled)	~5 m long, like a small car	Canada, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Horseshoe Canyon Formation’s frilled ceratopsian, its horns were for display. An ornate herbivore!
Arrhinoceratops brachyops: "No nose horn face"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Ceratopidae (long-frilled)	~6 m long, like a small bus	Canada, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Horseshoe Canyon Formation’s frilled ceratopsian grazed in floodplains. A hornless hero!
Chasmosaurus belli: "Opening lizard, beautiful"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Ceratopidae (long-frilled)	~5 m long, like a small car	Canada, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Dinosaur Park Formation’s large-frilled ceratopsian used its frill for display. A beautiful beast!
Pentaceratops sternbergii: "Five-horned face"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Ceratopidae (long-frilled)	~6 m long, like a small bus	USA, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Kirtland Formation’s ornate ceratopsian, its large frill was for show. A five-horned marvel!
Torosaurus latus: "Perforated lizard, wide"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Ceratopidae (long-frilled)	~8 m long, like a large van	USA, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Hell Creek Formation’s huge-frilled ceratopsian grazed North American plains. A wide-ranging warrior!
Triceratops horridus: "Three-horned face, rough"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Ceratopidae (long-frilled)	~9 m long, like a large van	USA, ~68 Mya (Late Cretaceous)	Herbivore	Thea’s log: Hell Creek Formation’s iconic ceratopsian fended off T. rex with horns and frill. A three-horned titan!
Centrosaurus apertus: "Pointed lizard, open"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Ceratopidae (short-frilled)	~6 m long, like a small bus	Canada, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Dinosaur Park Formation’s horned dinosaur lived in herds with a nasal horn. A pointed protector!
Nasutoceratops titusi: "Big-nosed horned face"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Ceratopidae (short-frilled)	~5 m long, like a small car	USA, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Kaiparowits Formation’s unique ceratopsian, its bull-like horns were distinctive. A big-nosed battler!
Pachyrhinosaurus lakustai: "Thick-nosed lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Ceratopidae (short-frilled)	~6 m long, like a small bus	Canada, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Horseshoe Canyon Formation’s boss-nosed ceratopsian grazed in herds. A thick-nosed titan!
Styracosaurus ovatus: "Spiked lizard"	Order: Ornithischia, Suborder: Cerapoda, Infraorder: Ceratopia, Family: Ceratopidae (short-frilled)	~5 m long, like a small car	Canada, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Dinosaur Park Formation’s spiky-frilled ceratopsian, its horns were for display. A spiky spectacle!
Thyreophora – The Armored Tanks
Huayangosaurus taibaii: "Huayang lizard"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Stegosauria, Family: Huayangosauridae	~4 m long, like a small car	China, ~165 Mya (Middle Jurassic)	Herbivore	Thea’s log: Shaximiao Formation’s early stegosaur, its plates and spikes offered defense. An armored adventurer!
Tuojiangosaurus multispinus: "Tuo River lizard, many spines"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Stegosauria, Family: Huayangosauridae	~7 m long, like a small bus	China, ~160 Mya (Late Jurassic)	Herbivore	Thea’s log: Shaximiao Formation’s plated dinosaur grazed Asian forests with tail spikes. A spiny survivor!
Kentrosaurus aethiopicus: "Spiked lizard, African"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Stegosauria, Family: Stegosauridae	~4.5 m long, like a small car	Tanzania, ~150 Mya (Late Jurassic)	Herbivore	Thea’s log: Tendaguru Formation’s spiky stegosaur defended itself with tail spikes. An African armored star!
Stegosaurus stenops: "Roof lizard, narrow"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Stegosauria, Family: Stegosauridae	~9.6 m long, like a large van	USA, ~150 Mya (Late Jurassic)	Herbivore	Thea’s log: Morrison Formation’s iconic stegosaur, its plates may have been for display. A plated powerhouse!
Wuerhosaurus ordosensis: "Wuerho lizard"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Stegosauria, Family: Stegosauridae	~7 m long, like a small bus	China, ~120 Mya (Early Cretaceous)	Herbivore	Thea’s log: Ejinhoro Formation’s late stegosaur grazed in Asian plains. A lasting legend!
Scelidosaurus harrisonii: "Limb lizard"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Ankylosauria, Family: Scelidosauridae	~4 m long, like a small car	England, ~190 Mya (Early Jurassic)	Herbivore	Thea’s log: Charmouth Mudstone’s early armored dinosaur had bony scutes for protection. An early tank!
Hylaeosaurus armatus: "Forest lizard, armored"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Ankylosauria, Family: Nodosauridae	~5 m long, like a small car	England, ~130 Mya (Early Cretaceous)	Herbivore	Thea’s log: Wealden Group’s armored dinosaur grazed in European forests. A forest fortress!
Nodosaurus textilis: "Knobbed lizard"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Ankylosauria, Family: Nodosauridae	~6 m long, like a small bus	USA, ~80 Mya (Late Cretaceous)	Herbivore	Thea’s log: Frontier Formation’s nodosaur, its armor protected it from predators. A knobbed knight!
Panoplosaurus mirus: "Fully armored lizard, wonderful"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Ankylosauria, Family: Nodosauridae	~5 m long, like a small car	Canada, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Dinosaur Park Formation’s heavily armored nodosaur grazed in floodplains. A wonderful warrior!
Polacanthus foxii: "Many spines"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Ankylosauria, Family: Nodosauridae	~5 m long, like a small car	England, ~125 Mya (Early Cretaceous)	Herbivore	Thea’s log: Wessex Formation’s spiky nodosaur defended itself in European forests. A spiny sentinel!
Sauropelta edwardsorum: "Lizard shield"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Ankylosauria, Family: Nodosauridae	~5 m long, like a small car	USA, ~110 Mya (Early Cretaceous)	Herbivore	Thea’s log: Cloverly Formation’s armored nodosaur grazed in North American plains. A shielded survivor!
Silvisaurus condrayi: "Forest lizard"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Ankylosauria, Family: Nodosauridae	~4 m long, like a small car	USA, ~100 Mya (Early Cretaceous)	Herbivore	Thea’s log: Dakota Formation’s armored dinosaur lived in forested plains. A forest fortress!
Struthiosaurus transylvanicus: "Ostrich lizard, Transylvanian"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Ankylosauria, Family: Nodosauridae	~4 m long, like a small car	Romania, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Sânpetru Formation’s small nodosaur grazed in European islands. A Transylvanian tank!
Ankylosaurus magniventris: "Fused lizard, large belly"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Ankylosauria, Family: Ankylosauridae	~6–11 m long, like a large van	USA, ~68 Mya (Late Cretaceous)	Herbivore	Thea’s log: Hell Creek Formation’s tank-like dinosaur, its tail club smashed predators. An armored avenger!
Euoplocephalus tutus: "Well-armored head"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Ankylosauria, Family: Ankylosauridae	~6 m long, like a small bus	Canada, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Dinosaur Park Formation’s armored giant used its club for defense. A headstrong hero!
Saichania chulsanensis: "Beautiful one"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Ankylosauria, Family: Ankylosauridae	~6 m long, like a small bus	Mongolia, ~70 Mya (Late Cretaceous)	Herbivore	Thea’s log: Barun Goyot Formation’s desert-dwelling ankylosaur, heavily armored. A beautiful battler!
Talarurus plicatospineus: "Basket tail, folded spine"	Order: Ornithischia, Suborder: Thyreophora, Infraorder: Ankylosauria, Family: Ankylosauridae	~5 m long, like a small car	Mongolia, ~75 Mya (Late Cretaceous)	Herbivore	Thea’s log: Bayan Shireh Formation’s armored dinosaur, its tail club was a weapon. A spiky superstar!

Legend Quest: Masters of Myth – A Gallery of Dinosaurs & Other Early Reptiles

Narrator and Main Character

Teodora Villavicencio (voiced by Annemarie Blanco) narrates and leads the adventure with her bold, witty, and courageous style. She guides her team—Jenny, Brad, and Tuck—through a thrilling encounter with prehistoric creatures infused with a mythical, supernatural edge, as is typical in Legend Quest.

Main Cast

Teodora Villavicencio - Annemarie Blanco
Jenny - Janice Kawaye
Brad - Chad Doreck
Tuck - Audrey Wasilewski

Transcript Quote

Teodora (Narrating):

"Alright, amigos, buckle up! We’re not just dealing with your average T-Rex or flying lizard today. These dinos? They’ve got this creepy, magical vibe, like they’re straight out of some ancient curse. Picture this: a Quetzalcoatlus swooping down with wings wider than my house, or a Triceratops that’s glowing with some freaky runes. Jenny’s freaking out, Brad’s trying to ‘befriend’ a Velociraptor—bad idea—and Tuck’s just… being Tuck. My phone’s picking up some serious supernatural signals, so it’s time to kick these prehistoric monsters back to the Jurassic. ¡Vamos a salvar el día!"

Prehistoric Creatures Chart

Below are detailed charts for each group of prehistoric creatures, organized by their updated taxonomic classifications within Kingdom: Animalia, Phylum: Chordata, Class: Sauropsida. Each chart includes Name Means, Classification, Size Comparison, Place, Diet, and Details. The classifications reflect the provided taxonomy, with corrections for accuracy and consistency.

🦅 Pterosauria – Lords of the Ancient Skies

Kingdom: Animalia, Phylum: Chordata, Class: Sauropsida, Order: Pterosauria

Name	Name Means	Classification	Size Comparison	Place	Diet	Details
Dimorphodon macronyx	Two-form tooth	Suborder: Rhamphorhynchoidea, Family: Dimorphodontidae	Wingspan ~1.2m, like a large eagle	Europe (England)	Carnivore/Insectivore	Large head, two types of teeth, hunted small prey.
Eudimorphodon ranzii	True two-form tooth	Suborder: Rhamphorhynchoidea, Family: Eudimorphodontidae	Wingspan ~1m, like a hawk	Europe (Italy)	Piscivore/Carnivore	Sharp teeth, likely ate fish or small animals.
Anurognathus ammoni	Tailless jaw	Suborder: Rhamphorhynchoidea, Family: Rhamphorhynchidae	Wingspan ~0.5m, like a sparrow	Europe (Germany)	Insectivore	Tiny, bat-like, caught insects in flight.
Rhamphorhynchus etches	Beak snout	Suborder: Rhamphorhynchoidea, Family: Rhamphorhynchidae	Wingspan ~1.8m, like a pelican	Europe (Germany, England)	Piscivore	Long tail, needle-like teeth for fish.
Scaphognathus crassirostris	Boat jaw	Suborder: Rhamphorhynchoidea, Family: Rhamphorhynchidae	Wingspan ~1m, like a seagull	Europe (Germany)	Carnivore	Robust jaw, preyed on small vertebrates.
Sordes pilosus	Hairy demon	Suborder: Rhamphorhynchoidea, Family: Rhamphorhynchidae	Wingspan ~0.6m, like a pigeon	Asia (Kazakhstan)	Insectivore/Carnivore	Had hair-like pycnofibers.
Dsungaripterus weii	Dsungari wing	Suborder: Pterodactyloidea, Family: Dsungaripteridae	Wingspan ~3m, like a condor	Asia (China)	Carnivore	Strong jaws, crushed shellfish or small prey.
Arthurdactylus conandoylei	Arthur’s finger	Suborder: Pterodactyloidea, Family: Pterodaustriidae	Wingspan ~4.6m, like a small plane	South America (Brazil)	Piscivore	Skimmed water for fish.
Pterodaustro guinazui	Southern wing	Suborder: Pterodactyloidea, Family: Pterodaustriidae	Wingspan ~2.5m, like a flamingo	South America (Argentina)	Filter-feeder	Comb-like teeth for filtering organisms.
Cearadactylus atrox	Fierce Ceará wing	Suborder: Pterodactyloidea, Family: Pterodactylidae	Wingspan ~4m, like a large albatross	South America (Brazil)	Piscivore	Sharp teeth, caught fish.
Pteranodon sternbergi	Toothless wing	Suborder: Pterodactyloidea, Family: Ornithocheiridae	Wingspan ~6m, like a hang glider	North America (USA)	Piscivore	Crested, likely used for display or flight.
Quetzalcoatlus lawsoni	Feathered serpent god	Suborder: Pterodactyloidea, Family: Ornithocheiridae	Wingspan ~14m, like a small plane	North America (USA)	Carnivore/Scavenger	Largest flying animal, possibly foraged on ground.

🦖 Theropoda – The Predatory Elite

Kingdom: Animalia, Phylum: Chordata, Class: Sauropsida, Subclass: Diapsida, Infraclass: Archosauromorpha, Superorder: Dinosauria, Order: Saurischia, Suborder: Theropoda

Name	Name Means	Classification	Size Comparison	Place	Diet	Details
Coelophysis bauri	Hollow form	Infraorder: Ceratosauria, Family: Podokesauridae	~3m long, like a wolf	North America (USA)	Carnivore	Small, agile, hunted small animals.
Procompsognathus triassicus	Before elegant jaw	Infraorder: Ceratosauria, Family: Podokesauridae	~1m long, like a cat	Europe (Germany)	Carnivore/Insectivore	Tiny, ate insects and small vertebrates.
Saltopus elginensis	Leaping foot	Infraorder: Ceratosauria, Family: Podokesauridae	~0.6m long, like a small dog	Europe (Scotland)	Carnivore/Insectivore	Small, fast runner.
Ceratosaurus nasicornis	Horned lizard	Infraorder: Ceratosauria, Family: Ceratosauridae	~6m long, like a bear	North America (USA)	Carnivore	Nasal horn, hunted medium-sized prey.
Dilophosaurus wetherilli	Two-crested lizard	Infraorder: Ceratosauria, Family: Ceratosauridae	~6m long, like a bear	North America (USA)	Carnivore	Double crests, likely for display.
Elaphrosaurus bambergi	Light lizard	Infraorder: Ceratosauria, Family: Ceratosauridae	~6m long, like a horse	Africa (Tanzania)	Carnivore	Slender, fast-moving predator.
Eustreptospondylus oxoniensis	Well-curved vertebra	Infraorder: Carnosauria, Family: Megalosauridae	~7m long, like a rhinoceros	Europe (England)	Carnivore	Coastal predator, medium-sized.
Giganotosaurus carolinii	Giant southern lizard	Infraorder: Carnosauria, Family: Megalosauridae	~14m long, like a bus	South America (Argentina)	Carnivore	Rivaled T-Rex in size, apex predator.
Poekilopleuron bucklandii	Varied rib	Infraorder: Carnosauria, Family: Megalosauridae	~7m long, like a rhinoceros	Europe (France)	Carnivore	Hunted medium-sized prey.
Proceratosaurus bradleyi	Before Ceratosaurus	Infraorder: Carnosauria, Family: Megalosauridae	~3m long, like a wolf	Europe (England)	Carnivore	Early tyrannosaur relative, small crest.
Allosaurus europaeus	Different lizard	Infraorder: Carnosauria, Family: Allosauridae	~11.5m long, like an elephant	Europe (Portugal), North America (USA)	Carnivore	Agile, hunted sauropods.
Yangchuanosaurus zigongensis	Zigong lizard	Infraorder: Carnosauria, Family: Allosauridae	~8m long, like an elephant	Asia (China)	Carnivore	Dominant predator, similar to Allosaurus.
Acrocanthosaurus atokensis	High-spined lizard	Infraorder: Carnosauria, Family: Spinosauridae	~11m long, like a bus	North America (USA)	Carnivore	Spinal ridge, apex predator.
Spinosaurus aegyptiacus	Spine lizard	Infraorder: Carnosauria, Family: Spinosauridae	~15m long, like a bus	Africa (Egypt, Morocco)	Carnivore/Piscivore	Sailed back, likely swam and ate fish.
Albertosaurus sarcophagus	Alberta lizard	Infraorder: Carnosauria, Family: Tyrannosauridae	~9m long, like an elephant	North America (Canada)	Carnivore	Fast hunter, smaller T-Rex relative.
Alioramus altai	Different branch	Infraorder: Carnosauria, Family: Tyrannosauridae	~6m long, like a bear	Asia (Mongolia)	Carnivore	Slender, horn-like crests.
Daspletosaurus horneri	Frightful lizard	Infraorder: Carnosauria, Family: Tyrannosauridae	~9m long, like an elephant	North America (USA, Canada)	Carnivore	Robust, hunted hadrosaurs.
Tarbosaurus bataar	Alarming lizard	Infraorder: Carnosauria, Family: Tyrannosauridae	~10m long, like a bus	Asia (Mongolia)	Carnivore	Asian T-Rex cousin, apex predator.
Tyrannosaurus rex	Tyrant lizard king	Infraorder: Carnosauria, Family: Tyrannosauridae	~13m long, like a bus	North America (USA)	Carnivore	Massive bite force, iconic predator.
Coelurus fragilis	Hollow tail	Infraorder: Coelurosauria, Family: Coeluridae	~2m long, like a large dog	North America (USA)	Carnivore	Small, lightly built theropod.
Moros intrepidus	Doom fearless	Infraorder: Coelurosauria, Family: Coeluridae	~1.5m long, like a turkey	North America (USA)	Carnivore	Early tyrannosaur ancestor, agile.
Compsognathus longipes	Elegant jaw	Infraorder: Coelurosauria, Family: Compsognathidae	~1m long, like a chicken	Europe (Germany, France)	Carnivore	Tiny, ate small prey.
Sinosauropteryx lingyuanensis	Chinese lizard wing	Infraorder: Coelurosauria, Family: Compsognathidae	~1m long, like a chicken	Asia (China)	Carnivore	First dinosaur with feather-like structures.
Dromiceiomimus samueli	Emu mimic	Infraorder: Coelurosauria, Family: Ornithomimidae	~3.5m long, like a horse	North America (Canada)	Omnivore	Long arms, foraged plants and animals.
Gallimimus bullatus	Chicken mimic	Infraorder: Coelurosauria, Family: Ornithomimidae	~6m long, like a giraffe	Asia (Mongolia)	Omnivore	Fastest ornithomimid, bird-like.
Ornithomimus velox	Bird mimic	Infraorder: Coelurosauria, Family: Ornithomimidae	~4m long, like a horse	North America (USA)	Omnivore	Feathered, ostrich-like.
Struthiomimus altus	Ostrich mimic	Infraorder: Coelurosauria, Family: Ornithomimidae	~4m long, like a horse	North America (USA, Canada)	Omnivore	Long legs, sprinting dinosaur.
Deinocheirus mirificus	Terrible hand	Infraorder: Coelurosauria, Family: Deinocheiridae	~11m long, like a bus	Asia (Mongolia)	Omnivore	Massive arms, foraged plants and fish.
Oviraptor philoceratops	Egg thief	Infraorder: Coelurosauria, Family: Oviraptoridae	~2m long, like a large dog	Asia (Mongolia)	Omnivore	Beaked, likely ate eggs or plants.
Therizinosaurus cheloniformis	Scythe lizard	Infraorder: Coelurosauria, Family: Therizinosauridae	~10m long, like a bus	Asia (Mongolia)	Herbivore	Massive claws, for defense or foraging.
Stenonychosaurus inequalis	Narrow claw lizard	Infraorder: Coelurosauria, Family: Saurornithoididae	~2m long, like a large dog	North America (Canada)	Carnivore	Brainy, possibly hunted in packs.
Troodon formosus	Wounding tooth	Infraorder: Coelurosauria, Family: Saurornithoididae	~2m long, like a large dog	North America (USA, Canada)	Carnivore	Intelligent, nocturnal hunter.
Bambiraptor feinbergi	Bambi thief	Infraorder: Deinonychosauria, Family: Dromaeosauridae	~1m long, like a turkey	North America (USA)	Carnivore	Small, feathered, agile hunter.
Deinonychus antirrhopus	Terrible claw	Infraorder: Deinonychosauria, Family: Dromaeosauridae	~3m long, like a wolf	North America (USA)	Carnivore	Pack hunter, large sickle claws.
Dromaeosaurus albertensis	Running lizard	Infraorder: Deinonychosauria, Family: Dromaeosauridae	~2m long, like a large dog	North America (Canada)	Carnivore	Robust, likely ambushed prey.
Saurornitholestes sullivani	Lizard-bird thief	Infraorder: Deinonychosauria, Family: Dromaeosauridae	~2m long, like a large dog	North America (USA, Canada)	Carnivore	Feathered, agile predator.
Velociraptor osmolskae	Swift thief	Infraorder: Deinonychosauria, Family: Dromaeosauridae	~2m long, like a large dog	Asia (Mongolia)	Carnivore	Feathered, pack-hunting raptor.
Archaeopteryx albersdoerferi	Ancient wing	Family: Archaeopterygidae	~0.5m long, like a pigeon	Europe (Germany)	Carnivore/Insectivore	Transitional species, feathers and teeth.

🦕 Sauropodomorpha – The Gentle Giants

Kingdom: Animalia, Phylum: Chordata, Class: Sauropsida, Subclass: Diapsida, Infraclass: Archosauromorpha, Superorder: Dinosauria, Order: Saurischia, Suborder: Sauropodomorpha

Name	Name Means	Classification	Size Comparison	Place	Diet	Details
Herrerasaurus ischigualastensis	Herrera’s lizard	Infraorder: Prosauropoda, Family: Herrerasauridae	~4m long, like a horse	South America (Argentina)	Carnivore	Early dinosaur, possibly theropod relative.
Sanjuansaurus gordilloi	San Juan lizard	Infraorder: Prosauropoda, Family: Herrerasauridae	~3m long, like a wolf	South America (Argentina)	Carnivore	Small, bipedal predator.
Smurfette smurfensis	(Fictional name)	Infraorder: Prosauropoda, Family: Herrerasauridae	7.5 inches tall like a 3 apple high	Europe (Belgium)	Herbivore/Smurfberries	Erroneous entry, from Smurfs series, not a dinosaur.
Staurikosaurus pricei	Southern cross lizard	Infraorder: Prosauropoda, Family: Herrerasauridae	~2m long, like a large dog	South America (Brazil)	Carnivore	Small, early bipedal predator.
Anchisaurus polyzelus	Near lizard	Infraorder: Prosauropoda, Family: Anchisauridae	~2m long, like a large dog	North America (USA)	Omnivore	Small, possibly bipedal sauropodomorph.
Efraasia minor	Efraas’ small	Infraorder: Prosauropoda, Family: Anchisauridae	~2.5m long, like a horse	Europe (Germany)	Herbivore	Small, early plant-eater.
Eoraptor lunensis	Dawn thief	Infraorder: Prosauropoda, Family: Anchisauridae	~1m long, like a cat	South America (Argentina)	Omnivore	One of the earliest dinosaurs, agile.
Thecodontosaurus antiquus	Socket-tooth lizard	Infraorder: Prosauropoda, Family: Anchisauridae	~2m long, like a large dog	Europe (England)	Herbivore	Early sauropodomorph, likely bipedal.
Massospondylus kaalae	Massive vertebra	Infraorder: Prosauropoda, Family: Plateosauridae	~4m long, like a horse	Africa (South Africa)	Herbivore	Bipedal or quadrupedal, ate plants.
Mussaurus patagonicus	Mouse lizard	Infraorder: Prosauropoda, Family: Plateosauridae	~3m long, like a wolf	South America (Argentina)	Herbivore	Juveniles tiny, adults larger, plant-eaters.
Plateosaurus gracilis	Flat lizard	Infraorder: Prosauropoda, Family: Plateosauridae	~6m long, like a rhinoceros	Europe (Germany)	Herbivore	Common prosauropod, likely lived in herds.
Riojasaurus incertus	Rioja lizard	Infraorder: Prosauropoda, Family: Melanorosauridae	~10m long, like an elephant	South America (Argentina)	Herbivore	Large, quadrupedal sauropodomorph.
Barapasaurus tagorei	Big leg lizard	Infraorder: Sauropoda, Family: Cetiosauridae	~14m long, like a bus	Asia (India)	Herbivore	Early sauropod, long neck for high browsing.
Cetiosaurus oxoniensis	Whale lizard	Infraorder: Sauropoda, Family: Cetiosauridae	~16m long, like a bus	Europe (England)	Herbivore	Bulky sauropod, long tail.
Brachiosaurus altithorax	Arm lizard	Infraorder: Sauropoda, Family: Brachiosauridae	~25m long, like a large whale	North America (USA); India	Herbivore	Towering, long arms for high browsing.
Sauroposeidon proteles	Lizard Poseidon	Infraorder: Sauropoda, Family: Brachiosauridae	~28m long, like a large whale	North America (USA)	Herbivore	One of the tallest dinosaurs.
Camarasaurus supremus	Chambered lizard	Infraorder: Sauropoda, Family: Camarasauridae	~18m long, like a bus	North America (USA)	Herbivore	Robust, short-necked sauropod.
Euhelopus zdanskyi	Good marsh foot	Infraorder: Sauropoda, Family: Camarasauridae	~15m long, like a bus	Asia (China)	Herbivore	Long-necked, lived near water.
Opisthocoelicaudia skarzynskii	Rear hollow tail	Infraorder: Sauropoda, Family: Camarasauridae	~12m long, like a bus	Asia (Mongolia)	Herbivore	Unique tail, possibly defensive.
Apatosaurus ajax	Deceptive lizard	Infraorder: Sauropoda, Family: Diplodocidae	~24m long, like a large whale	North America (USA)	Herbivore	Long tail, whip-like, grazed low plants.
Dicraeosaurus sattleri	Forked lizard	Infraorder: Sauropoda, Family: Diplodocidae	~12m long, like a bus	Africa (Tanzania)	Herbivore	Short-necked, ate low plants.
Diplodocus hallorum	Double beam	Infraorder: Sauropoda, Family: Diplodocidae	~29m long, like a large whale	North America (USA)	Herbivore	Long tail, likely lived in herds.
Mamenchisaurus sinocanadorum	Mamenchi lizard	Infraorder: Sauropoda, Family: Diplodocidae	~35m long, like a large whale	Asia (China)	Herbivore	Extremely long neck, one of longest dinosaurs.
Supersaurus vivianae	Super lizard	Infraorder: Sauropoda, Family: Diplodocidae	~34m long, like a large whale	North America (USA)	Herbivore	Massive, long tail and neck.
Alamosaurus sanjuanensis	Alamo lizard	Infraorder: Sauropoda, Family: Titanosauridae	~30m long, like a large whale	North America (USA)	Herbivore	Late Cretaceous titan, lived in herds.
Dreadnoughtus schrani	Fears nothing	Infraorder: Sauropoda, Family: Titanosauridae	~26m long, like a large whale	South America (Argentina)	Herbivore	One of the heaviest dinosaurs.
Saltasaurus loricatus	Salta lizard	Infraorder: Sauropoda, Family: Titanosauridae	~12m long, like a bus	South America (Argentina)	Herbivore	Armored titan with bony plates.

🦴 Cerapoda – Beaked, Horned, and Armored

Kingdom: Animalia, Phylum: Chordata, Class: Sauropsida, Subclass: Diapsida, Infraclass: Archosauromorpha, Superorder: Dinosauria, Order: Ornithischia, Suborder: Cerapoda

Name	Name Means	Classification	Size Comparison	Place	Diet	Details
Lesothosaurus diagnosticus	Lesotho lizard	Infraorder: Ornithopoda, Family: Fabrosauridae	~1m long, like a cat	Africa (Lesotho)	Herbivore	Small, early ornithischian, bipedal.
Scutellosaurus lawleri	Little shield lizard	Infraorder: Ornithopoda, Family: Fabrosauridae	~1.2m long, like a cat	North America (USA)	Herbivore	Armored with small bony plates.
Echinodon becklesii	Spiny tooth	Infraorder: Ornithopoda, Family: Heterodontosauridae	~0.6m long, like a small dog	Europe (England)	Herbivore	Canine-like teeth, possibly omnivorous.
Heterodontosaurus tucki	Different-tooth lizard	Infraorder: Ornithopoda, Family: Heterodontosauridae	~1m long, like a cat	Africa (South Africa)	Herbivore	Multiple tooth types, ate tough plants.
Pisanosaurus mertii	Pisano’s lizard	Infraorder: Ornithopoda, Family: Heterodontosauridae	~1m long, like a cat	South America (Argentina)	Herbivore	Early ornithischian, possibly transitional.
Callovosaurus leedsi	Callovian lizard	Infraorder: Ornithopoda, Family: Hypsilophodontidae	~3m long, like a horse	Europe (England)	Herbivore	Ate low plants, medium-sized.
Dryosaurus elderae	Tree lizard	Infraorder: Ornithopoda, Family: Hypsilophodontidae	~3m long, like a horse	North America (USA)	Herbivore	Fast, bipedal plant-eater.
Hypsilophodon foxii	High-ridge tooth	Infraorder: Ornithopoda, Family: Hypsilophodontidae	~2m long, like a large dog	Europe (England)	Herbivore	Agile, bipedal plant-eater.
Nanosaurus agilis	Dwarf lizard	Infraorder: Ornithopoda, Family: Hypsilophodontidae	~1m long, like a cat	North America (USA)	Herbivore	Tiny, fast ornithopod.
Parksosaurus warreni	Parks’ lizard	Infraorder: Ornithopoda, Family: Hypsilophodontidae	~2m long, like a large dog	North America (Canada)	Herbivore	Lived in forested areas.
Thescelosaurus garbanii	Wondrous lizard	Infraorder: Ornithopoda, Family: Hypsilophodontidae	~3m long, like a horse	North America (USA)	Herbivore	Robust, possibly had a large heart.
Camptosaurus dispar	Bent lizard	Infraorder: Ornithopoda, Family: Iguanodontidae	~6m long, like a rhinoceros	North America (USA)	Herbivore	Early iguanodont, bipedal/quadrupedal.
Iguanodon bernissartensis	Iguana tooth	Infraorder: Ornithopoda, Family: Iguanodontidae	~11.5m long, like an elephant	Europe (Belgium, England)	Herbivore	Thumb spikes, grazed plants.
Mantellisaurus atherfieldensis	Mantell’s lizard	Infraorder: Ornithopoda, Family: Iguanodontidae	~7m long, like a rhinoceros	Europe (England)	Herbivore	Smaller, agile iguanodont.
Muttaburrasaurus langdoni	Muttaburra lizard	Infraorder: Ornithopoda, Family: Iguanodontidae	~8m long, like an elephant	Australia	Herbivore	Nasal crest, possibly for vocalization.
Ouranosaurus nigeriensis	Brave lizard	Infraorder: Ornithopoda, Family: Iguanodontidae	~7m long, like a rhinoceros	Africa (Niger)	Herbivore	Sail-like back, likely for display.
Probactrosaurus gobiensis	Before Bactrosaurus	Infraorder: Ornithopoda, Family: Iguanodontidae	~6m long, like a rhinoceros	Asia (China)	Herbivore	Early hadrosaur relative.
Tenontosaurus dossi	Sinew lizard	Infraorder: Ornithopoda, Family: Iguanodontidae	~7m long, like a rhinoceros	North America (USA)	Herbivore	Long tail, often found with Deinonychus fossils.
Bactrosaurus johnsoni	Club lizard	Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~6m long, like a rhinoceros	Asia (China)	Herbivore	Early hadrosaur, lived in herds.
Edmontosaurus regalis	Edmonton lizard	Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~12.5m long, like a bus	North America (Canada)	Herbivore	Flat-headed hadrosaur, grazed plants.
Hadrosaurus foulkii	Bulky lizard	Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~9m long, like an elephant	North America (USA)	Herbivore	First named hadrosaur, coastal dweller.
Kritosaurus navajovius	Separated lizard	Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~9m long, like an elephant	North America (USA)	Herbivore	Nasal hump, possibly for display.
Maiasaura peeblesorum	Good mother lizard	Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~9m long, like an elephant	North America (USA)	Herbivore	Known for nesting, cared for young.
Prosaurolophus maximus	Before Saurolophus	Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~9m long, like an elephant	North America (Canada)	Herbivore	Small crest, likely vocalized.
Saurolophus osborni	Crested lizard	Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~10m long, like a bus	North America (Canada)	Herbivore	Long crest, sound amplification.
Shantungosaurus giganteus	Shandong lizard	Infraorder: Ornithopoda, Family: Hadrosauridae (Saurolophinae)	~18m long, like a bus	Asia (China)	Herbivore	Largest hadrosaur, lived in herds.
Corythosaurus casuarius	Helmet lizard	Infraorder: Ornithopoda, Family: Hadrosauridae (Lambeosaurinae)	~9m long, like an elephant	North America (Canada)	Herbivore	Large crest, for sound or display.
Hypacrosaurus stebingeri	Near highest lizard	Infraorder: Ornithopoda, Family: Hadrosauridae (Lambeosaurinae)	~9m long, like an elephant	North America (USA, Canada)	Herbivore	Tall crest, for communication.
Lambeosaurus magnicristatus	Lambe’s lizard	Infraorder: Ornithopoda, Family: Hadrosauridae (Lambeosaurinae)	~9m long, like an elephant	North America (Canada)	Herbivore	Hatchet-shaped crest.
Olorotitan arharensis	Swan titan	Infraorder: Ornithopoda, Family: Hadrosauridae (Lambeosaurinae)	~8m long, like an elephant	Asia (Russia)	Herbivore	Large crest, well-preserved fossils.
Parasaurolophus walkeri	Near crested lizard	Infraorder: Ornithopoda, Family: Hadrosauridae (Lambeosaurinae)	~10m long, like a bus	North America (USA, Canada)	Herbivore	Long, tube-like crest for sound.
Tsintaosaurus spinorhinus	Qingdao lizard	Infraorder: Ornithopoda, Family: Hadrosauridae (Lambeosaurinae)	~8m long, like an elephant	Asia (China)	Herbivore	Forward-leaning crest, for display.
Homalocephale calathocercos	Level head	Infraorder: Ceratopia, Family: Pachycephalosauridae	~2m long, like a large dog	Asia (Mongolia)	Herbivore	Flat-headed, possibly head-butted.
Pachycephalosaurus wyomingensis	Thick-headed lizard	Infraorder: Ceratopia, Family: Pachycephalosauridae	~4m long, like a horse	North America (USA)	Herbivore	Thick skull, likely for head-butting.
Prenocephale prenes	Sloping head	Infraorder: Ceratopia, Family: Pachycephalosauridae	~2m long, like a large dog	Asia (Mongolia)	Herbivore	Rounded skull, for display or combat.
Stegoceras validum	Roof horn	Infraorder: Ceratopia, Family: Pachycephalosauridae	~2m long, like a large dog	North America (Canada)	Herbivore	Dome-headed, agile dinosaur.
Psittacosaurus meileyingensis	Parrot lizard	Infraorder: Ceratopia, Family: Psittacosauridae	~2m long, like a large dog	Asia (China)	Herbivore	Beaked, early ceratopsian, possibly bipedal.
Bagaceratops rozhdestvenskyi	Small horned face	Infraorder: Ceratopia, Family: Protoceratopidae	~1m long, like a cat	Asia (Mongolia)	Herbivore	Small, early ceratopsian, small frill.
Leptoceratops gracilis	Slender horned face	Infraorder: Ceratopia, Family: Protoceratopidae	~2m long, like a large dog	North America (USA)	Herbivore	Small, lacked horns, forest-dweller.
Microceratus gobiensis	Small horn	Infraorder: Ceratopia, Family: Protoceratopidae	~0.8m long, like a cat	Asia (Mongolia)	Herbivore	Tiny, agile ceratopsian.
Montanoceratops cerorhynchus	Montana horned face	Infraorder: Ceratopia, Family: Protoceratopidae	~3m long, like a horse	North America (USA)	Herbivore	Short frill, small ceratopsian.
Protoceratops hellenikorhinus	First horned face	Infraorder: Ceratopia, Family: Protoceratopidae	~2m long, like a large dog	Asia (Mongolia)	Herbivore	Large frill, no horns, well-known.
Anchiceratops ornatus	Near horned face	Infraorder: Ceratopia, Family: Ceratopidae (long-frilled)	~5m long, like a rhinoceros	North America (Canada)	Herbivore	Long frill, ornamented, grazed plants.
Arrhinoceratops brachyops	No-nose horned face	Infraorder: Ceratopia, Family: Ceratopidae (long-frilled)	~6m long, like a rhinoceros	North America (Canada)	Herbivore	Large frill, lacked nasal horn.
Chasmosaurus belli	Chasm lizard	Infraorder: Ceratopia, Family: Ceratopidae (long-frilled)	~5m long, like a rhinoceros	North America (Canada)	Herbivore	Large frill with openings, for display.
Pentaceratops sternbergii	Five-horned face	Infraorder: Ceratopia, Family: Ceratopidae (long-frilled)	~7.5m long, like a rhinoceros	North America (USA)	Herbivore	Multiple horns, large frill for defense.
Torosaurus latus	Perforated lizard	Infraorder: Ceratopia, Family: Ceratopidae (long-frilled)	~8m long, like an elephant	North America (USA)	Herbivore	Massive frill, possibly mature Triceratops.
Triceratops horridus	Three-horned face	Infraorder: Ceratopia, Family: Ceratopidae (long-frilled)	~9m long, like an elephant	North America (USA)	Herbivore	Three horns, tank-like ceratopsian.
Centrosaurus apertus	Pointed lizard	Infraorder: Ceratopia, Family: Ceratopidae (short-frilled)	~6m long, like a rhinoceros	North America (Canada)	Herbivore	Single nasal horn, frill with hooks.
Nasutoceratops titusi	Big-nose horned face	Infraorder: Ceratopia, Family: Ceratopidae (short-frilled)	~5m long, like a rhinoceros	North America (USA)	Herbivore	Bull-like horns, short frill.
Pachyrhinosaurus lakustai	Thick-nosed lizard	Infraorder: Ceratopia, Family: Ceratopidae (short-frilled)	~6m long, like a rhinoceros	North America (Canada)	Herbivore	Nasal boss, robust ceratopsian.
Styracosaurus ovatus	Spiked lizard	Infraorder: Ceratopia, Family: Ceratopidae (short-frilled)	~5m long, like a rhinoceros	North America (Canada)	Herbivore	Frill with long spikes, nasal horn.

🛡️ Thyreophora – The Armored Tanks

Kingdom: Animalia, Phylum: Chordata, Class: Sauropsida, Subclass: Diapsida, Infraclass: Archosauromorpha, Superorder: Dinosauria, Order: Ornithischia, Suborder: Thyreophora

Name	Name Means	Classification	Size Comparison	Place	Diet	Details
Huayangosaurus taibaii	Huayang lizard	Infraorder: Stegosauria, Family: Huayangosauridae	~4m long, like a horse	Asia (China)	Herbivore	Early stegosaur, plates and spikes.
Tuojiangosaurus multispinus	Tuo River lizard	Infraorder: Stegosauria, Family: Huayangosauridae	~7m long, like a rhinoceros	Asia (China)	Herbivore	Large plates, tail spikes.
Kentrosaurus aethiopicus	Spiked lizard	Infraorder: Stegosauria, Family: Stegosauridae	~4m long, like a horse	Africa (Tanzania)	Herbivore	Small plates, long tail spikes.
Stegosaurus stenops	Roof lizard	Infraorder: Stegosauria, Family: Stegosauridae	~9.5m long, like an elephant	North America (USA)	Herbivore	Iconic plates, tail spikes, low grazer.
Wuerhosaurus ordosensis	Wuerho lizard	Infraorder: Stegosauria, Family: Stegosauridae	~7m long, like a rhinoceros	Asia (China)	Herbivore	Broad plates, for display or thermoregulation.
Scelidosaurus harrisonii	Limb lizard	Infraorder: Ankylosauria, Family: Scelidosauridae	~4m long, like a horse	Europe (England)	Herbivore	Early armored dinosaur, bony scutes.
Hylaeosaurus armatus	Forest lizard	Infraorder: Ankylosauria, Family: Nodosauridae	~5m long, like a rhinoceros	Europe (England)	Herbivore	Armored, no tail club.
Nodosaurus textilis	Knobbed lizard	Infraorder: Ankylosauria, Family: Nodosauridae	~6m long, like a rhinoceros	North America (USA)	Herbivore	Heavily armored, no tail club.
Panoplosaurus mirus	Completely armored lizard	Infraorder: Ankylosauria, Family: Nodosauridae	~7m long, like a rhinoceros	North America (Canada)	Herbivore	Robust, heavily armored nodosaur.
Polacanthus foxii	Many spines	Infraorder: Ankylosauria, Family: Nodosauridae	~5m long, like a rhinoceros	Europe (England)	Herbivore	Spiked armor for defense.
Sauropelta edwardsorum	Lizard shield	Infraorder: Ankylosauria, Family: Nodosauridae	~5m long, like a rhinoceros	North America (USA)	Herbivore	Large, spiked nodosaur.
Silvisaurus condrayi	Forest lizard	Infraorder: Ankylosauria, Family: Nodosauridae	~4m long, like a horse	North America (USA)	Herbivore	Smaller, forest-dwelling nodosaur.
Struthiosaurus transylvanicus	Ostrich lizard	Infraorder: Ankylosauria, Family: Nodosauridae	~3m long, like a horse	Europe (Romania)	Herbivore	Small, heavily armored nodosaur.
Ankylosaurus magniventris	Fused lizard	Infraorder: Ankylosauria, Family: Ankylosauridae	~10.2m long, like an elephant	North America (USA)	Herbivore	Tank-like, massive tail club.
Euoplocephalus tutus	Well-armored head	Infraorder: Ankylosauria, Family: Ankylosauridae	~6m long, like a rhinoceros	North America (Canada)	Herbivore	Armored, tail club, low grazer.
Saichania chulsanensis	Beautiful one	Infraorder: Ankylosauria, Family: Ankylosauridae	~7m long, like a rhinoceros	Asia (Mongolia)	Herbivore	Armored, adapted to arid environments.
Talarurus plicatospineus	Basket tail	Infraorder: Ankylosauria, Family: Ankylosauridae	~5m long, like a rhinoceros	Asia (Mongolia)	Herbivore	Flexible tail, spiked armor.

Dinosauria Classification Overview

Pterosauria

Suborder Rhamphorhynchoidea (Primitive, Long-Tailed Pterosaurs)

Suborder Pterodactyloidea (Advanced, Short-Tailed Pterosaurs)

Saurischia

Infraorder Coelurosauria (Light, Fast Theropods)

Family Podokesauridae (Early, Small Theropods)}}

Family Coeluridae (Small, Bipedal Predators)

Family Compsognathidae (Tiny, Fast Hunters)

Family Ornithomimidae ("Ostrich-Mimic" Dinosaurs)

Family Deinocheiridae (Giant, Weird Ornithomimosaurs)

Family Oviraptoridae (Beaked, Possibly Omnivorous Theropods)

Family Saurornithoididae (Troodontids, Small, Smart Predators)

Family Therizinosauridae (Strange, Clawed Herbivores)

Infraorder Deinonychosauria (Raptor-like Dinosaurs with Sickle Claws)

Family Dromaeosauridae (True Raptors)

Infraorder Ceratosauria

Family Ceratosauridae (Horned Theropods)

Infraorder Carnosauria (Large Predatory Theropods)

Family Megalosauridae (Early Large Theropods, Includes Spinosaur Relatives)

Family Allosauridae (Classic Jurassic Apex Predators)

Family Spinosauridae (Fish-Eating, Semi-Aquatic Theropods)

Family Tyrannosauridae (Large, Late Cretaceous Apex Predators)

Infraorder Prosauropoda (Early, Smaller, Bipedal to Semi-Quadrupedal Ancestors of Sauropods)

Family Anchisauridae (Small to Medium Prosauropods)

Family Plateosauridae (Larger, More Derived Prosauropods)

Family Melanorosauridae (Transition Between Prosauropods and Sauropods)

Infraorder Sauropoda (Large, Fully Quadrupedal, Long-Necked Dinosaurs)

Family Cetiosauridae (Early, Medium-Sized Sauropods)

Family Brachiosauridae (Long-Limbed, High-Browsing Sauropods)

Family Camarasauridae (Stocky, Shorter-Necked Sauropods)

Family Diplodocidae (Long, Whip-Tailed Sauropods)

Family Titanosauridae (Giant, Widespread, Cretaceous Sauropods)

Ornithischia

Infraorder Ornithopoda (Bipedal to Quadrupedal Herbivorous Dinosaurs)

Family Fabrosauridae (Small, Early Ornithopods)

Family Heterodontosauridae (Small, Fang-Toothed Herbivores/Omnivores)

Family Hypsilophodontidae (Small, Agile Ornithopods)

Family Iguanodontidae (Medium to Large Ornithopods, Precursors to Hadrosaurs)

Family Hadrosauridae (Duck-Billed Dinosaurs, Highly Successful Late Cretaceous Ornithopods)

Subfamily Hadrosaurinae (Flat-Headed Hadrosaurs)

Subfamily Lambeosaurinae (Crested Hadrosaurs)

Infraorder Ceratopia (Horned and Frilled Dinosaurs)

Family Pachycephalosauridae (Dome-Headed Dinosaurs)

Family Psittacosauridae (Early Ceratopsians, Parrot-Beaked Dinosaurs)

Family Protoceratopidae (Small, Early Frilled Ceratopsians)

Family Ceratopidae (Large Horned Dinosaurs with Well-Developed Frills)

Subfamily Centrosaurinae (Short-Frilled, Often More Ornamented Ceratopsians)

Subfamily Chasmosaurinae (Large, Long-Frilled Ceratopsians)

Infraorder Stegosauria (Plated Dinosaurs with Tail Spikes)

Family Stegosauridae (Plated Dinosaurs)

Infraorder Ankylosauria (Heavily Armored Dinosaurs, Some with Clubbed Tails)

Family Scelidosauridae (Early Armored Dinosaurs)

Family Nodosauridae (Armored Dinosaurs Without Tail Clubs)

Family Ankylosauridae (Armored Dinosaurs with Tail Clubs)

Size Comparison

Pterosauria

Suborder: Rhamphorhynchoidea

Family: Dimorphodontidae

Family: Eudimorphodontidae

Family: Rhamphorhynchidae

Suborder: Pterodactyloidea

Family: Dsungaripteridae

Family: Pterodaustriidae

Family: Ornithocheiridae

Saurischia

Suborder: Theropoda (Carnivorous Dinosaurs)

Infraorder: Coelurosauria

Family: Podokesauridae

Family: Coeluridae

Family: Compsognathidae

Family: Ornithomimidae

Family: Deinocheiridae

Family: Oviraptoridae

Family: Therizinosauridae

Infraorder: Coelurosauria, Deinonychosauria

Family: Saurornithoididae

Family: Dromaeosauridae

Order: Archaeopterygiformes

Infraorder: Ceratosauria