[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Animalia Linnaeus, 1758 - animals
     Branch Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
       Division Bilateria Hatschek, 1888 see Subkingdom Bilateria Hatschek, 1888
         Subdivision Deuterostomia Grobben, 1908 see Infrakingdom Deuterostomia Grobben, 1908
           Phylum Chordata Bateson, 1885 - chordates
             Subphylum Vertebrata Cuvier, 1812 - vertebrates
               Superclass Tetrapoda Goodrich, 1930 - tetrapods see Clade Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
                 Class Amphibia Gray, 1825
                   1 Subclass †Labyrinthodontia Meyer, 1842 see Class Amphibia Linnaeus, 1758
                   2 Subclass †Lepospondyli Zittel, 1888 see Superorder Lepospondyli Zittel, 1887
                   3 Subclass Salientia Laurenti, 1768
                   4 Subclass Urodela Dumeril, 1806
                   5 Subclass Gymnophiona (Rafinesque, 1814)