Class [Mammalia] Linnaeus, 1758 - mammals Order Rodentia Bowdich, 1821 - rodents Family Sciuridae Batsch, 1788 - squirrels, chipmunks, marmots, and prairie dogs Subfamily Sciurinae Batsch, 1788 - tree and ground squirrels Genus Ammospermophilus Merriam, 1892 - antelope-squirrels Ammospermophilus harrisii (Audubon & Bachman, 1854) - Harris' antelope-squirrel