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 Anura Fischer von Waldheim, 1813
                   Suborder Archeobatrachia see Order Anura Fischer von Waldheim, 1813
                     Superfamily Pipoidea Gray, 1825 see [unranked] Xenoanura Savage, 1973
                       Family Pipidae Gray, 1825
                         1 Genus Hymenochirus Boulenger, 1896
                         2 Genus Pipa Laurenti, 1768
                         3 Genus Pseudhymenochirus Chabanaud, 1920
                         4 Genus Xenopus Wagler, 1827