Class Mammalia Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Suborder Sciurognathi (Tullberg, 1899) see Suborder Sciuromorpha Brandt, 1855
       Family Muridae Batsch, 1788 - rats, mice, hamsters, voles, lemmings, and gerbils
         Subfamily Sigmodontinae Wagner, 1843
           Genus Neotoma Say & Ord, 1825 - woodrats
             01 Neotoma albigula Hartley, 1894 - white-throated woodrat
             02 Neotoma angustapalata Baker, 1951
             03 Neotoma anthonyi J. A. Allen, 1898 - Anthony's woodrat
             04 Neotoma bryanti Merriam, 1887 - Bryant's woodrat
             05 Neotoma bunkeri Burt, 1932 - Bunker's woodrat
             06 Neotoma chrysomelas J. A. Allen, 1908 - Nicaraguan woodrat
             07 Neotoma cinerea (Ord, 1815) - bushy-tailed woodrat
             08 Neotoma devia Goldman, 1927 - Arizona woodrat
             09 Neotoma floridana (Ord, 1818) - eastern woodrat
             10 Neotoma fuscipes Baird, 1858 - dusky-footed woodrat
             11 Neotoma goldmani Merriam, 1903 - Goldman's woodrat
             12 Neotoma lepida Thomas, 1893 - desert woodrat
             13 Neotoma martinensis Goldman, 1905 - San Martin woodrat
             14 Neotoma mexicana Baird, 1855 - Mexican woodrat
             15 Neotoma micropus Baird, 1855 - southern plains woodrat
             16 Neotoma nelsoni Goldman, 1905 - Nelson's woodrat
             17 Neotoma palatina Goldman, 1905 - Bolaños woodrat
             18 Neotoma phenax Merriam, 1903 - Sonoran woodrat
             19 Neotoma stephensi Goldman, 1905 - Stephen's woodrat
             20 Neotoma varia Burt, 1932 - Turner Island woodrat
             21 Subgenus Neotoma Say & Ord, 1825
             22 Subgenus Teonoma
             23 Subgenus Teanopus