Class [Mammalia] Linnaeus, 1758 - mammals Order Rodentia Bowdich, 1821 - rodents Family Heteromyidae Gray, 1868 - pocket mice, kangaroo rats, and kangaroo mice Genus Dipodomys Gray, 1841 - kangaroo-rats Dipodomys venustus (Merriam, 1904) - narrow-faced kangaroo-rat