Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988] Amphibia Gray 1825 [Gauthier, Kluge & Rowe 1988] - amphibians see Class Amphibia Gray, 1825 Gymnophiona Müller, 1832 see Order Gymnophiona Rafinesque, 1814 Stegokrotaphia Cannatella & Hillis, 1993 1 Family Ichthyophiidae Taylor, 1968 2 Family Caeciliidae Rafinesque, 1814