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Definition of Ornithischia
1. Noun. Extinct terrestrial reptiles having bird-like pelvises: armored dinosaurs (thyreophorans); boneheaded and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods).
Exact synonyms: Order Ornithischia
Generic synonyms: Animal Order
Group relationships: Archosauria, Subclass Archosauria
Member holonyms: Ornithischian, Ornithischian Dinosaur, Genus Pisanosaurus, Genus Staurikosaurus, Suborder Thyreophora, Thyreophora, Thyreophoran, Marginocephalia, Marginocephalian, Suborder Marginocephalia, Euronithopod, Euronithopoda, Ornithopoda, Suborder Euronithopoda, Suborder Ornithopoda
Generic synonyms: Animal Order
Group relationships: Archosauria, Subclass Archosauria
Member holonyms: Ornithischian, Ornithischian Dinosaur, Genus Pisanosaurus, Genus Staurikosaurus, Suborder Thyreophora, Thyreophora, Thyreophoran, Marginocephalia, Marginocephalian, Suborder Marginocephalia, Euronithopod, Euronithopoda, Ornithopoda, Suborder Euronithopoda, Suborder Ornithopoda
Lexicographical Neighbors of Ornithischia
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