Mammaliaformes Rowe 1988, nom. cl. inval. see Clade Mammaliaformes Rowe 1988 [Rowe 2020]
   [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 Ruminantia Scopoli, 1777
                                 01 Genus †Palaeohypsodontus Trofimov, 1957
                                 02 Genus †Gobiocerus Sokolov, 1952
                                 03 Genus †Georgiomeryx Paraskevaidis, 1940
                                 04 Family †Amphimerycidae Stehlin, 1910
                                 05 Family †Hypertragulidae Cope, 1879
                                 06 Family Tragulidae Milne-Edwards, 1864 - chevrotains
                                 07 Family †Leptomerycidae Zittel, 1893
                                 08 Family †Bachitheriidae Janis, 1987
                                 09 Family †Lophiomerycidae Janis, 1987
                                 10 Family †Gelocidae Schlosser, 1886
                                 11 Superfamily Cervoidea Batsch, 1788
                                 12 Superfamily Giraffoidea Gray, 1821
                                 13 Superfamily Bovoidea Gray, 1821