1. (noun) any of numerous extinct terrestrial reptiles of the Mesozoic era

• archosaur
• archosaurian
• archosaurian reptile

1. (noun) any of numerous extinct terrestrial reptiles of the Mesozoic era

• argentinosaur
• diplodocus
• ground-shaker
• seismosaur
• iguanodon
• ornithischian
• ornithischian dinosaur
• saurischian
• saurischian dinosaur
• titanosaur
• titanosaurian