Class [Mammalia] Linnaeus, 1758 - mammals Order Rodentia Bowdich, 1821 - rodents Family Heteromyidae Gray, 1868 - pocket mice, kangaroo rats, and kangaroo mice Genus Heteromys Desmarest, 1817 - forest spiny pocket mice Heteromys desmarestianus Gray, 1868 - Desmarest's spiny pocket mouse