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 Chroeomys Thomas, 1916 see Genus Abrothrix Waterhouse, 1837
             Chroeomys andinus (Philippi, 1858) see Abrothrix andinus (Philippi, 1858)