Class [Mammalia] Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Family Heteromyidae Gray, 1868 - pocket mice, kangaroo rats, and kangaroo mice
       1 Genus Perognathus Wied-Neuwied, 1839 - silky pocket mice
       2 Genus Chaetodipus Merriam, 1889 - coarse-haired pocket mice
       3 Genus Microdipodops Merriam, 1891 - kangaroo-mice
       4 Genus Dipodomys Gray, 1841 - kangaroo-rats
       5 Genus Liomys Merriam, 1902 - spiny pocket mice
       6 Genus Heteromys Desmarest, 1817 - forest spiny pocket mice