1. of or relating to reptiles of the subclass Archosauria;
WordNet (r) 3.0 (2006):
archosaurian
adj 1: of or relating to reptiles of the subclass Archosauria
n 1: extinct reptiles including: dinosaurs; plesiosaurs;
pterosaurs; ichthyosaurs; thecodonts [syn: archosaur,
archosaurian, archosaurian reptile]