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
           4.0 [Lissamphibia Haeckel, 1866] see Infraclass Lissamphibia Haeckel, 1866