Class Mammalia Linnaeus, 1758 - mammals Subclass Theria Parker & Haswell, 1897 Order Lagomorpha Brandt, 1855 - lagomorphs Family Leporidae Batsch, 1788 - hares and rabbits Genus Sylvilagus Gray, 1867 - cottontails Subgenus Sylvilagus Gray, 1867 Sylvilagus obscurus Chapman, Cramer, Deppenaar & Robinson, 1992 - Appalachian cottontail