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
                             1 †Mastodon angustidens see Gomphotherium angustidens (G. Cuvier, 1817)
                             2 †Mastodon longirostris Kaup see Tetralophodon longirostris (Kaup)