1. Of or relating to reptiles of the subclass Archosauria
   "Archosaurian fossils include ancient crocodiles and dinosaurs"

1. Extinct reptiles including: dinosaurs, plesiosaurs, pterosaurs, ichthyosaurs, and thecodonts
   "Crocodiles are the only living archosaurians"; "Fossils of archosaurian reptiles provide insight into ancient ecosystems";
   - archosaur, archosaurian reptile

Derived forms: archosaurians

Type of: diapsid, diapsid reptile

Part of: Archosauria, subclass Archosauria

Encyclopedia: Archosaurian