Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988], nom. cl. inval. see Clade Tetrapoda Hatschek & Cori 1896 [Laurin 2020]
   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