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Ornithischia

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Noun1.Ornithischia - extinct terrestrial reptiles having bird-like pelvises: armored dinosaurs (thyreophorans); boneheaded and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods)
animal order - the order of animals
Archosauria, subclass Archosauria - a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodonts
ornithischian, ornithischian dinosaur - herbivorous dinosaur with a pelvis like that of a bird
genus Pisanosaurus - primitive ornithischian dinosaur found in Argentina; early Triassic
genus Staurikosaurus - primitive ornithischian dinosaur found in Brazil
suborder Thyreophora, Thyreophora, thyreophoran - armored dinosaurs: stegosaurs and ankylosaurs
Marginocephalia, marginocephalian, suborder Marginocephalia - includes boneheaded (pachycephalosaurs) and horned (ceratopsian) dinosaurs
euronithopod, Euronithopoda, Ornithopoda, suborder Euronithopoda, suborder Ornithopoda - widespread group including duck-billed dinosaurs and their early relatives (hadrosaurs, trachodon and iguanodon)


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Names of the most common dinosaurs are categorized into two orders such as Ornithischia and Saurischia.
The second group, Ornithischia, included armoured dinosaurs such as Tricerotps and Stegosaurus, and was not -- despite the misleading name -- thought to include anything even remotely birdlike.
Here is some background information on the Chinese dinosaurs, who, like other dinos, belong to two orders: Ornithischia (bird-hipped), which were four-legged plant-eaters and Saurischia (lizard-hipped), which included two-legged meat-eaters (theropods) and four-legged plant-eaters (sauropods).
 
 
 
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