Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Amphibia Linnaeus, 1758 - amphibians see Class Amphibia Gray, 1825
               Subclass Anuromorpha Kuhn, 1959
                 Order Anura Fischer von Waldheim, 1813
                   Suborder Aglossa Cope, 1875
                     Family Pipidae Gray, 1825
                       Genus Pipa Laurenti, 1768
                       Genus Xenopus Wagler, 1827