#archosaur__archosaurian__archosaurian_reptile extinct reptiles including: dinosaurs; plesiosaurs; pterosaurs; ichthyosaurs; thecodonts
supertype: #diapsid_reptile__diapsid reptile having a pair of openings in the skull behind each eye
member of: #subclass_Archosauria
subtype: #dinosaur any of numerous extinct terrestrial reptiles of the Mesozoic era
subtype: #ornithischian_dinosaur__ornithischiandinosaur__ornithischian herbivorous dinosaur with a pelvis like that of a bird
subtype: #pisanosaur__pisanosaurus primitive dinosaur found in Argentina
subtype: #staurikosaur__staurikosaurus primitive dinosaur found in Brazil
subtype: #armored_dinosaur__armoreddinosaur dinosaurs having bony armour
subtype: #stegosaur__stegosaurus__stegosauru__Stegosaur_stenops herbivorous ornithischian dinosaur with a row of bony plates along its back and a spiked tail probably used as a weapon
subtype: #ankylosaur__ankylosaurus having the back covered with thick bony plates; thought to have walked with a sprawling gait resembling a lizard's
subtype: #Edmontonia heavily armored and highly spiked dinosaur with semi-upright posture
subtype: #bone-headed_dinosaur bipedal herbivorous dinosaurs with bony crowns
subtype: #pachycephalosaur__pachycephalosaurus bipedal herbivore having 10 inches of bone atop its head; largest bone-headed dinosaur ever found
subtype: #ceratopsian__horned_dinosaur any of several four-footed herbivorous horned dinosaurs with enormous beaked skulls; of the late Cretaceous in North America and Mongolia
subtype: #protoceratops__protoceratop small horned dinosaur
subtype: #triceratops__triceratop huge ceratopsian dinosaur having three horns and the neck heavily armored with a very solid frill
subtype: #styracosaur__styracosaurus__styracosauru an unusual ceratopsian dinosaur having many large spikes around the edge of its bony frill and a long nose horn; late Cretaceous
subtype: #psittacosaur__psittacosaurus primitive dinosaur actually lacking horns and having only the beginning of a frill; long hind and short front limbs; may have been bipedal
subtype: #ornithopod_dinosaur__ornithopod bipedal herbivorous dinosaur
subtype: #hadrosaur__hadrosaurus__hadrosauru__duck-billed_dinosaur any of numerous large bipedal ornithischian dinosaurs having a horny duck-like bill and webbed feet; may have been partly aquatic
subtype: #anatotitan one of the largest and most famous duck-billed dinosaurs
subtype: #corythosaur__corythosaurus__corythosauru duck-billed dinosaur with nasal passages that expand into a crest like a hollow helmet
subtype: #edmontosaurus__edmontosauru duck-billed dinosaur from Canada found as a fossilized mummy with skin
subtype: #trachodon__trachodont large duck-billed dinosaur of the Upper Cretaceous
subtype: #iguanodon massive herbivorous bipedal dinosaur with a long heavy tail; common in Europe and North Africa; early Cretaceous
subtype: #saurischian_dinosaur__saurischiandinosaur__saurischian herbivorous or carnivorous dinosaur having a three-pronged pelvis like that of a crocodile
subtype: #sauropod_dinosaur__sauropod very large herbivorous dinosaur of the Jurassic and Cretaceous having a small head a long neck and tail and five-toed limbs; largest known land animal
subtype: #apatosaur__apatosaurus__brontosaur__brontosaurus__thunder_lizard__thunderlizard__Apatosaurus_excelsus huge quadrupedal herbivorous dinosaur common in N. America in the late Jurassic
subtype: #barosaur__barosaurus 5-story-tall dinosaur
subtype: #theropod_dinosaur__theropod__bird-footed_dinosaur any of numerous carnivorous dinosaurs of the Triassic to Cretaceous with short forelimbs that walked or ran on strong hind legs
subtype: #ceratosaur__ceratosaurus primitive medium-sized theropod; swift-running bipedal carnivorous dinosaur having grasping hands with sharp claws and a short horn between the nostrils; Jurassic in North America
subtype: #coelophysis__coelophysi one of the oldest known dinosaurs; late Triassic; cannibalistic
subtype: #carnosaur large carnivorous bipedal dinosaur having huge claws
subtype: #tyrannosaur__tyrannosauru__Tyrannosaurus_rex large carnivorous bipedal dinosaur having enormous teeth with knifelike serrations; may have been a scavenger rather than an active predator; Upper Cretaceous; North America
subtype: #allosaur__allosaurus late Jurassic carnivorous dinosaur; similar to but somewhat smaller than tyrannosaurus
subtype: #compsognathus__compsognathu very small bipedal carnivorous dinosaur of the late Jurassic in Bavaria
subtype: #herrerasaur__herrerasaurus__herrerasauru a kind of theropod dinosaur found in Argentina
subtype: #eoraptor a theropod dinosaur of the genus Eoraptor
subtype: #megalosaur__megalosaurus gigantic carnivorous bipedal dinosaur of the Jurassic or early Cretaceous in Europe
subtype: #ornithomimid lightly built medium-sized dinosaur having extremely long limbs and necks with small heads and big brains and large eyes
subtype: #struthiomimus__struthiomimu small light-boned toothless dinosaur resembling an ostrich in size and proportions
subtype: #deinocheirus lightly built medium-sized theropod with long limbs and neck
subtype: #maniraptor advanced carnivorous theropod
subtype: #oviraptorid advanced carnivorous theropod
subtype: #velociraptor small active carnivore that probably fed on protoceratops; possibly related more closely to birds than to other dinosaurs
subtype: #dromaeosaur a kind of maniraptor
subtype: #deinonychus__deinonychu swift agile wolf-sized bipedal dinosaur having a large curved claw on each hind foot; of the Cretaceous
subtype: #utahraptor__superslasher large (20-ft) and swift carnivorous dinosaur having an upright 15-in slashing claw on each hind foot; early Cretaceous
subtype: #Mononychus_olecranus 75-million-year-old turkey-sized long-legged fossil found in the Gobi Desert of Mongolia having birdlike fused wrist bones and keeled breastbone and a long tail resembling a dinosaur's; short 3-inch-long forelimbs end in a single claw instead of wings; classification as bird or dinosaur is in dispute
subtype: #diplodocus huge quadrupedal herbivore with long neck and tail; of late Jurassic in western N. America
subtype: #titanosaur__titanosaurian amphibious quadrupedal herbivorous dinosaur with a long thin neck and whiplike tail; of the Cretaceous mostly in the southern hemisphere
subtype: #genus_Argentinosaurus enormous dinosaur of the middle Cretaceous found in Argentina
subtype: #argentinosaur huge herbivorous dinosaur of Cretaceous found in Argentina
subtype: #ground-shaker__seismosaur huge herbivorous dinosaur of the Cretaceous found in western North America
subtype: #pterosaur__flying_reptile extinct flying reptile of the Jurassic and Cretaceous having a birdlike beak and membranous wings supported by the very long fourth digit of each forelimb
subtype: #pterodactyl extinct flying reptile
subtype: #thecodont_reptile__thecodontreptile__thecodont presumably in the common ancestral line to dinosaurs and crocodiles and birds
subtype: #ichthyosaur any of several marine reptiles of the Mesozoic having a body like a porpoise with dorsal and tail fins and paddle-shaped limbs
subtype: #ichthyosaurus__ichthyosauru ichthyosaurs of the Jurassic
subtype: #stenopterygius__Stenopterygius_quadrisicissus an ichthyosaur of the genus Stenopterygius
subtype: #plesiosaur__plesiosaurus extinct marine reptile with a small head on a long neck a short tail and four paddle-shaped limbs; of the Jurassic and Cretaceous
subtype: #nothosaur extinct marine reptile with longer more slender limbs than plesiosaurs and less completely modified for swimming
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