Class [Mammalia] Linnaeus, 1758 - mammals
   Order Rodentia Bowdich, 1821 - rodents
     Family Muridae Batsch, 1788 - rats, mice, hamsters, voles, lemmings, and gerbils
       Subfamily Hesperomyinae Murray, 1866 - New-World mice and rats see Subfamily Sigmodontinae Wagner, 1843
         Genus Thomasomys Coues, 1884 - Thomas's paramo mice
           01 Thomasomys aureus Tomes, 1860
           02 Thomasomys baeops Thomas, 1899
           03 Thomasomys bombycinus Anthony, 1925
           04 Thomasomys cinereiventer J. A. Allen, 1912
           05 Thomasomys cinereus Thomas, 1882
           06 Thomasomys daphne Thomas, 1917
           07 Thomasomys dorsalis see Delomys dorsalis Hensel, 1873
           08 Thomasomys gracilis Thomas, 1917
           09 Thomasomys hylophilus Osgood, 1912
           10 Thomasomys incanus Thomas, 1894
           11 Thomasomys ischyurus Osgood, 1914
           12 Thomasomys kalinowskii Thomas, 1894
           13 Thomasomys ladewi Anthony, 1926
           14 Thomasomys laniger Thomas, 1895
           15 Thomasomys monochromus see Thomasomys monochromos Bangs, 1900
           16 Thomasomys notatus Thomas, 1917
           17 Thomasomys oenax see Wilfredomys oenax (Thomas, 1928)
           18 Thomasomys oreas Anthony, 1926
           19 Thomasomys paramorum Thomas, 1898
           20 Thomasomys pictipes see Wilfredomys pictipes (Osgood, 1933)
           21 Thomasomys pyrrhonotus Thomas, 1886
           22 Thomasomys rhoadsi Stone, 1914
           23 Thomasomys rosalinda Thomas & St. Leger, 1926
           24 Thomasomys taczanowskii Thomas, 1882
           25 Thomasomys vestitus Thomas, 1898