Class [Mammalia] Linnaeus, 1758 - mammals Order Artiodactyla Owen, 1848 - even-toed ungulates see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997 Family Antilocapridae Gray, 1866 - pronghorn Genus Antilocapra Ord, 1818 - pronghorn Antilocapra americana (Ord, in Guthrie, 1815) - pronghorn