Vertebrata Cuvier, 1812 - vertebrates Gnathostomata Teleostomi Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988] Class Amphibia Gray, 1825 [paraphyletic] modern amphibian orders Order Urodela Dumeril, 1806 see Order Caudata Scopoli, 1777 Suborder Ambystomatoidea see Order Caudata Scopoli, 1777 Family Dicamptodontidae Tihen, 1958 see Family Ambystomatidae Gray, 1850