Clade Mammaliaformes Rowe 1988 [nom. cl. nov.]
   [crown] Class Mammalia Linnaeus, 1758 - mammals
     Subclass Theriiformes (Rowe, 1988) M.C. McKenna & S.K. Bell, 1997 see Division Theriiformes
       Infraclass Holotheria (Wible et al., 1995) M.C. McKenna & S.K. Bell, 1997 see [unranked] Holotheria
         Superlegion Trechnotheria McKenna, 1975 see [unranked] Trechnotheria McKenna, 1975
           Legion Cladotheria McKenna, 1975 see [unranked] Cladotheria McKenna, 1975
             Sublegion Zatheria McKenna, 1975 see [unranked] Zatheria McKenna, 1975
               Infralegion Tribosphenida McKenna, 1975 see Sublegion Boreosphenida
                 Supercohort Theria (Parker & Haswell, 1897) M.C. McKenna & S.K. Bell, 1997 - therians see Clade Theria
                   Cohort Placentalia (Owen, 1837) M.C. McKenna & S.K. Bell, 1997 - placentals
                     Magnorder Epitheria (McKenna, 1975) M.C. McKenna & S.K. Bell, 1997 see Cohort Placentalia (Owen, 1837) M.C. McKenna & S.K. Bell, 1997
                       Superorder Preptotheria (McKenna, 1975) McKenna, 1993
                         Grandorder Ungulata Linnaeus, 1766
                           Mirorder Altungulata (Prothero & Schoch, 1989) M.C. McKenna & S.K. Bell, 1997
                             Order Perissodactyla Owen, 1848 - odd-toed ungulates
                               Suborder Ceratomorpha Wood, 1937 see Infraorder Ceratomorpha Wood, 1937
                                 Infraorder Tapiromorpha (Haeckel, 1866) M.C. McKenna & S.K. Bell, 1997 see Suborder Tapiromorpha Haeckel, 1866
                                   Superfamily Rhinocerotoidea Gray, 1825
                                     Family Rhinocerotidae Gray, 1821 - rhinoceroses
                                       Subfamily †Amynodontinae (Scott & Osborn, 1883) Kretzoi, 1942 see Family Amynodontidae Scott & Osborn, 1883
                                         1 Genus †Rostriamynodon Wall & Manning, 1986
                                         2 Genus †Gigantamynodon Gromova, 1954
                                         3 ?Genus †Teilhardia Matthew & Granger, 1926
                                         4 ?Genus †Caenolophus Matthew & Granger, 1925
                                         5 Genus †Hypsamynodon Gromova, 1954
                                         6 Tribe †Amynodontini (Scott & Osborn, 1883) Wall, 1982
                                         7 Tribe †Cadurcotheriini (Kretzoi, 1942) M.C. McKenna & S.K. Bell, 1997