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
                           Eparctocyona McKenna, 1975
                             †Procreodi Matthew, 1915
                               †Oxyclaenidae Scott, 1892
                                 01 †Oxyprimus Van Valen, 1978
                                 02 †Carcinodon Scott, 1892
                                 03 †Chriacus Cope, 1883
                                 04 †Zhujegale Zhang & Tong, 1981
                                 05 †Astigale Zhang & Tong, 1981
                                 06 †Oxyclaenus Cope, 1884
                                 07 †Prolatidens Sudre & Russell, 1982
                                 08 †Oxytomodon Gazin, 1941
                                 09 †Prothryptacodon Simpson, 1935
                                 10 †Princetonia Gingerich, 1989
                                 11 †Thryptacodon Matthew, 1915
                                 12 †Petrolemur Tong, 1979
                                 13 †Khashanagale Szalay & McKenna, 1971
                                 14 †Lantianius Chow, 1964