Mammaliaformes Rowe 1988
   [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 Hippomorpha Wood, 1937
                                 Family †Palaeotheriidae Bonaparte, 1850
                                   01 Genus †Propachynolophus Lemoine, 1891
                                   02 Genus †Palaeotherium Cuvier, 1804
                                   03 Genus †Propalaeotherium Gervais, 1849
                                   04 Genus †Plagiolophus Pomel, 1847
                                   05 Genus †Pachynolophus Pomel, 1847
                                   06 Genus †Leptolophus Remy, 1965, nom. illeg.
                                   07 Genus †Gobihippus Dashzeveg, 1979
                                   08 Genus †Paraplagiolophus Depéret, 1917
                                   09 Genus †Cantabrotherium Casanovas-Cladellas & Santafe-Llopis, 1987
                                   10 Genus †Franzenium Casanovas-Cladellas & Santafe-Llopis, 1989
                                   11 Genus †Qianohippus Miao, 1982
                                   12 Genus †Pseudopalaeotherium Franzen, 1972