living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825
               Subclass Lissamphibia Haeckel, 1866 see Infraclass Lissamphibia Haeckel, 1866
                 Order Caudata Scopoli, 1777
                   Suborder Cryptobranchoidea Dunn, 1922 see [unranked] Cryptobranchoidei Noble, 1931
                     1 Family Hynobiidae Cope, 1859 (1856)
                     2 Family Cryptobranchidae Fitzinger, 1826