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 Wilfredomys Avila Pires, 1960
             1 Wilfredomys oenax (Thomas, 1928)
             2 Wilfredomys pictipes (Osgood, 1933) see Juliomys pictipes (Osgood, 1933)