Class Mammalia Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Suborder Sciurognathi (Tullberg, 1899) see Suborder Sciuromorpha Brandt, 1855
       Family Heteromyidae Gray, 1868 - pocket mice, kangaroo rats, and kangaroo mice
         Subfamily Heteromyinae Gray, 1868 - pocket mice, kangaroo rats, and kangaroo mice
           Genus Heteromys Desmarest, 1817 - forest spiny pocket mice
             1 Heteromys anomalus (Thompson, 1815) - Trinidad spiny pocket mouse
             2 Heteromys australis Thomas, 1901 - southern spiny pocket mouse
             3 Heteromys desmarestianus Gray, 1868 - Desmarest's spiny pocket mouse
             4 Heteromys gaumeri J. A. Allen & Chapman, 1897 - Gaumer's spiny pocket mouse
             5 Heteromys goldmani Merriam, 1902 - Goldman's spiny pocket mouse
             6 Heteromys nelsoni Merriam, 1902 - Nelson's spiny pocket mouse
             7 Heteromys oresterus Harris, 1932 - mountain spiny pocket mouse
             8 Subgenus Heteromys Desmarest, 1817
             9 Subgenus Xylomys Merriam, 1902