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 Scotinomys Thomas, 1913 - brown mice
             1 Scotinomys teguina Alston, 1876[1877] - Alston's brown mouse
             2 Scotinomys xerampelinus Bangs, 1902 - Chiriqui brown mouse