ornithischia
English Thesaurus
1. extinct terrestrial reptiles having bird-like pelvises: armored dinosaurs (thyreophorans); boneheaded and horned dinosaurs (marginocephalians); duck-billed dinosaurs (euronithopods) (noun.animal)
| hypernym | : | animal order, |
| definition | : | the order of animals (noun.animal) |
| member holonym | : | genus pisanosaurus, |
| definition | : | primitive ornithischian dinosaur found in Argentina; early Triassic (noun.animal) |
| member holonym | : | genus staurikosaurus, |
| definition | : | primitive ornithischian dinosaur found in Brazil (noun.animal) |
| member meronym | : | archosauria, subclass archosauria, |
| definition | : | a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodonts (noun.animal) |
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