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 Mammalia Linnaeus, 1758 - mammals
               Subclass Eutheria Gill, 1872 see Infraclass Eutheria Gill, 1872
                 Superorder Paenungulata Simpson, 1945 see Grandorder Paenungulata Simpson, 1945
                   Order Proboscidea Owen, 1859 - elephants
                     Superfamily †Moeritherioidea
                       Family †Mastodontidae Gray, 1821
                         Genus †Mastodon Rafinesque, 1814 see Genus Mammut Blumenbach, 1799
                           Subgenus †Bunolophodon Vacek, 1877 see Genus Gomphotherium Burmeister, 1837
                             †Mastodon longirostris Kaup see Tetralophodon longirostris (Kaup)