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 Artiodactyla Owen, 1848 - even-toed ungulates see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
                               Suborder Suiformes Jaeckel, 1911 see Suborder Suina Gray, 1868
                                 Superfamily †Oreodontoidea Leidy, 1869
                                   Family †Oreodontidae Leidy, 1869
                                     01 Subfamily †Oreonetinae Schultz & Falkenbach, 1956
                                     02 Subfamily †Leptaucheniinae Schultz & Falkenbach, 1940
                                     03 Subfamily †Oreodontinae Leidy, 1869
                                     04 Subfamily †Miniochoerinae Schultz & Falkenbach, 1956
                                     05 Subfamily †Desmatochoerinae Schultz & Falkenbach, 1954
                                     06 Subfamily †Promerycochoerinae Schultz & Falkenbach, 1949
                                     07 Subfamily †Merychyinae Simpson, 1945
                                     08 Subfamily †Eporeodontinae Schultz & Falkenbach, 1940
                                     09 Subfamily †Phenacocoelinae Schultz & Falkenbach, 1950
                                     10 Subfamily †Ticholeptinae Schultz & Falkenbach, 1940
                                     11 Subfamily †Merycochoerinae Schultz & Falkenbach, 1940