Class Mammalia Linnaeus, 1758 - mammals Subclass Theria Parker & Haswell, 1897 Order Artiodactyla Owen, 1848 - even-toed ungulates see Order Cetartiodactyla Montgelard, Catzeflis & Douzery, 1997 Family Cervidae Batsch, 1788 - deer Subfamily Capreolinae Brookes, 1828 Genus Odocoileus Rafinesque, 1832 - white-tailed deer and mule deer Odocoileus hemionus (Rafinesque, 1817) - mule deer Odocoileus hemionus sitkensis (Cowan)