Mammaliaformes Rowe 1988
   [crown clade] Mammalia Linnaeus, 1758 - mammals
     Theriiformes Rowe, 1988 see Division Theriiformes Rowe, 1988
       Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg, 1995 see Clade Holotheria Wible, Rougier, Novacek, McKenna & Dashzeveg 1995
         Trechnotheria McKenna, 1975 see Clade Trechnotheria McKenna 1975
           Cladotheria McKenna, 1975 see Clade Cladotheria McKenna 1975
             Zatheria McKenna, 1975 see Clade Zatheria McKenna 1975
               Tribosphenida McKenna, 1975 see Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
                 [crown clade] Theria Parker & Haswell, 1897 - therians see Subclass Theria Parker & Haswell, 1897
                   Placentalia Owen, 1837 - placentals
                     Epitheria McKenna, 1975 see Cohort Placentalia Owen, 1837
                       Preptotheria McKenna, 1975
                         Ungulata Linnaeus, 1766
                           Altungulata Prothero & Schoch, 1989
                             Perissodactyla Owen, 1848 - odd-toed ungulates
                               Ceratomorpha Wood, 1937
                                 Tapiromorpha Haeckel, 1866
                                   Rhinocerotoidea Gray, 1825
                                     Rhinocerotidae Gray, 1821 - rhinoceroses
                                       Rhinocerotinae Gray, 1821
                                         †Diceratheriini Dollo, 1885
                                           1 †Caenopina Cope, 1887
                                           2 †Diceratheriina Dollo, 1885