Class [Mammalia] Linnaeus, 1758 - mammals Order Rodentia Bowdich, 1821 - rodents Family Heteromyidae Gray, 1868 - pocket mice, kangaroo rats, and kangaroo mice Genus Chaetodipus Merriam, 1889 - coarse-haired pocket mice Chaetodipus spinatus (Merriam, 1889) - spiny pocket mouse