archosaurian
English Thesaurus
1. extinct reptiles including: dinosaurs; plesiosaurs; pterosaurs; ichthyosaurs; thecodonts (noun.animal)
| hypernym | : | diapsid, diapsid reptile, |
| definition | : | reptile having a pair of openings in the skull behind each eye (noun.animal) |
| hyponym | : | dinosaur, |
| definition | : | any of numerous extinct terrestrial reptiles of the Mesozoic era (noun.animal) |
| hyponym | : | flying reptile, pterosaur, |
| definition | : | an extinct reptile of the Jurassic and Cretaceous having a bird-like beak and membranous wings supported by the very long fourth digit of each forelimb (noun.animal) |
| hyponym | : | thecodont, thecodont reptile, |
| definition | : | presumably in the common ancestral line to dinosaurs and crocodiles and birds (noun.animal) |
| hyponym | : | ichthyosaur, |
| definition | : | any of several marine reptiles of the Mesozoic having a body like a porpoise with dorsal and tail fins and paddle-shaped limbs (noun.animal) |
| hyponym | : | plesiosaur, plesiosaurus, |
| definition | : | extinct marine reptile with a small head on a long neck a short tail and four paddle-shaped limbs; of the Jurassic and Cretaceous (noun.animal) |
| hyponym | : | nothosaur, |
| definition | : | extinct marine reptile with longer more slender limbs than plesiosaurs and less completely modified for swimming (noun.animal) |
| member meronym | : | archosauria, subclass archosauria, |
| definition | : | a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodonts (noun.animal) |
| derivation | : | archosaurian, |
| definition | : | of or relating to reptiles of the subclass Archosauria (adj.pert) |
2. of or relating to reptiles of the subclass Archosauria (adj.pert)
| pertainym | : | archosauria, subclass archosauria, |
| definition | : | a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodonts (noun.animal) |
3. extinct reptiles including: dinosaurs; plesiosaurs; pterosaurs; ichthyosaurs; thecodonts (noun.animal)
| derivation | : | archosaurian, |
| definition | : | of or relating to reptiles of the subclass Archosauria (adj.pert) |
4. of or relating to reptiles of the subclass Archosauria (adj.pert)
| pertainym | : | archosauria, subclass archosauria, |
| definition | : | a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodonts (noun.animal) |
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