Ancient Reptiles
39 entries in the Ancient Reptiles compendium.
Ancient Reptiles — Era Chart
CryptoclidusA Middle Jurassic plesiosaur with hidden clavicles.CynodontiaClade of therapsids that includes mammals and their extinct relatives.DallasaurusSmall basal mosasauroid from the Upper Cretaceous of Texas.DeinocheirusA large, bulky ornithomimosaur with a hadrosaur-like skull.DeinosuchusA giant Cretaceous eusuchian, larger than any modern crocodile or alligator.DiadectesEarly Permian herbivorous tetrapod, one of the first large land vertebrates.DicynodontiaExtinct herbivorous therapsids with tusks and a horny beak.DimetrodonPermian sail-backed synapsid, more mammal-like than reptile.DimorphodonA medium-sized pterosaur with two tooth types and short wings.DinocephaliaLarge-bodied therapsids of the Middle Permian with thickened skulls.DiplocaulusExtinct lepospondyl amphibian with a boomerang-shaped skull.DrepanosauromorphaExtinct reptiles with bird-like skulls and chameleon-like adaptations.DromaeosauridaeFeathered, swift carnivorous dinosaurs of the Cretaceous period.DsungaripterusEarly Cretaceous pterosaur with upcurved jaws for crushing shellfish.EdaphosaurusEarly herbivorous synapsid with a distinctive sail and tooth plates.EdmontosaurusA large duck-billed dinosaur from the end of the Cretaceous.EffigiaA toothless, bipedal crocodile relative from the Late Triassic.ElasmosaurusLong-necked plesiosaur from the Late Cretaceous of North America.EnantiornithesExtinct opposite birds, dominant avialans of the Cretaceous.EomaiaEarly Cretaceous eutherian mammal from China, debated as basal eutherian.EoraptorEarly sauropodomorph dinosaur from the Late Triassic of Argentina.EuharamiyidaA disputed clade of early mammals or mammal-like cynodonts.EuoplocephalusA heavily armored ankylosaurid with a tail club from Late Cretaceous Canada.EuparkeriaSmall Triassic reptile near the origin of archosaurs.EuropasaurusA dwarf sauropod from the Late Jurassic of Germany.EutriconodontaEarly mammals showing diverse bodyplans and ecological roles.Feathered dinosaurDinosaurs with feathers, including all birds and many non-avian species.GastornisExtinct giant flightless bird, once thought a predator, now seen as herbivore.GorgonopsExtinct genus of gorgonopsian therapsid from the Late Permian.GorgonopsiaSabre-toothed therapsid apex predators of the Permian.HadrosauridaeDuck-billed dinosaurs, dominant Late Cretaceous herbivores.HalszkaraptorA duck-sized dromaeosaurid with a possible semiaquatic lifestyle.HatzegopteryxGiant azhdarchid pterosaur with a short, powerful neck.HerrerasaurusOne of the earliest dinosaurs, from the Late Triassic of Argentina.HesperornisA large, toothed, flightless seabird from the Cretaceous.HeterodontosauridaeBasal ornithischian dinosaurs with distinctive tusks and chewing teeth.HeterodontosaurusSmall dinosaur with three types of teeth.HypsilophodonSmall, agile herbivore from the Early Cretaceous of England.IchthyornisToothed seabird-like ornithuran from the Late Cretaceous.
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