Mammaliaformes Rowe 1988, nom. cl. inval. see Clade Mammaliaformes Rowe 1988 [Rowe 2020]
   [crown] Class Mammalia Linnaeus, 1758 - mammals
     Subclass Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988
       Infraclass Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995 see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
         Superlegion Trechnotheria McKenna, 1975 see Clade Trechnotheria McKenna 1975
           Legion Cladotheria McKenna, 1975 see Clade Cladotheria McKenna 1975
             Sublegion Zatheria McKenna, 1975 see Clade Zatheria McKenna 1975
               Infralegion Tribosphenida McKenna, 1975 see Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
                 [crown] Supercohort Theria Parker & Haswell, 1897 - therians see Subclass Theria Parker & Haswell, 1897
                   Cohort Placentalia Owen, 1837 - placentals
                     Magnorder Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
                       Superorder Preptotheria McKenna, 1975
                         Grandorder Ungulata Linnaeus, 1766
                           Mirorder Altungulata Prothero & Schoch, 1989
                             Order Perissodactyla Owen, 1848 - odd-toed ungulates
                               Suborder Ceratomorpha Wood, 1937
                                 Infraorder Tapiromorpha Haeckel, 1866
                                   Superfamily Rhinocerotoidea Gray, 1825
                                     Family Rhinocerotidae Gray, 1821 - rhinoceroses
                                       Subfamily Rhinocerotinae Gray, 1821
                                         Tribe †Diceratheriini Dollo, 1885
                                           Subtribe †Diceratheriina Dollo, 1885
                                             1 Genus †Protaceratherium Abel, 1910
                                             2 Genus †Diceratherium Marsh, 1875
                                             3 Genus †Pleuroceros Roger, 1898
                                             4 Genus †Menoceras Troxell, 1921