archosauria

1 definition found

archosauria - WordNet (r) 2.1 (2005) :

  Archosauria
      n 1: a large subclass of diapsid reptiles including: crocodiles;
           alligators; dinosaurs; pterosaurs; plesiosaurs;
           ichthyosaurs; thecodonts [syn: Archosauria, subclass Archosauria
           ]