Vertebrata Cuvier, 1812 - vertebrates Gnathostomata Teleostomi Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988] Class Amphibia Gray, 1825 [paraphyletic] 1 Subclass †Labyrinthodontia Meyer, 1842 see Class Amphibia Linnaeus, 1758 2 Family †Diadectidae Cope, 1880 3 Subclass †Lepospondyli Zittel, 1888 see Superorder Lepospondyli Zittel, 1887 4 modern amphibian orders