archosaurian reptile

Thesaurus

Noun

1.archosaurian reptile - extinct reptiles including: dinosaurs; plesiosaurs; pterosaurs; ichthyosaurs; thecodontsarchosaur, archosauriandiapsid, diapsid reptile - reptile having a pair of openings in the skull behind each eyeArchosauria, subclass Archosauria - a large subclass of diapsid reptiles including: crocodiles; alligators; dinosaurs; pterosaurs; plesiosaurs; ichthyosaurs; thecodontsdinosaur - any of numerous extinct terrestrial reptiles of the Mesozoic eraflying reptile, pterosaur - 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 forelimbthecodont, thecodont reptile - presumably in the common ancestral line to dinosaurs and crocodiles and birdsichthyosaur - any of several marine reptiles of the Mesozoic having a body like a porpoise with dorsal and tail fins and paddle-shaped limbsplesiosaur, plesiosaurus - extinct marine reptile with a small head on a long neck a short tail and four paddle-shaped limbs; of the Jurassic and Cretaceousnothosaur - extinct marine reptile with longer more slender limbs than plesiosaurs and less completely modified for swimming