Class [Mammalia] Linnaeus, 1758 - mammals
   Order Artiodactyla Owen, 1848 - even-toed ungulates see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997
     Family Bovidae Gray, 1821 - antelope, cattle, bison, buffalo, goats, and sheep
       Genus Gazella Blainville, 1816 - gazelles
         Gazella spekei Blyth, 1863 - Speke's gazelle see Gazella spekei Blyth, 1863