Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Chordata Bateson, 1885 - chordates
           Subphylum Vertebrata Cuvier, 1812 - vertebrates
             Class Mammalia Linnaeus, 1758 - mammals
               Subclass Eutheria Gill, 1872 see Infraclass Eutheria Gill, 1872
                 Superorder Mesaxonia (Marsh, 1884)
                   Order Artiodactyla Owen, 1848 - even-toed ungulates see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
                     Suborder Ruminantia Scopoli, 1777
                       Infraorder Pecora Linnaeus, 1758
                         Family Bovidae Gray, 1821 - antelope, cattle, bison, buffalo, goats, and sheep
                           Subfamily Hippotraginae Retzius & Lovén, 1845
                             1 Tribe Hippotragini Retzius & Lovén, 1845
                             2 Tribe Orygini (Rochebrune, 1883) Haltenorth, 1963 see Tribe Hippotragini Retzius & Lovén, 1845