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
     Batrachia Latreille, 1800
       Caudata Fischer von Waldheim, 1813 see Order Caudata Scopoli, 1777
         Diadectosalamandroidei D.R. Frost et al., 2006
           1 Hydatinosalamandroidei D.R. Frost et al., 2006
           2 Plethosalamandroidei D.R. Frost et al., 2006