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