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 Ovis Linnaeus, 1758 - sheep
Ovis canadensis Shaw, 1804 - American bighorn