Order Rodentia - Family Muridae Author Guy G. Musser Author Michael D. Carleton text 1993 Smithsonian Institution Press Washington and London Editor Don E. Wilson Editor DeeAnn M. Reeder Mammal Species of the World (2 nd Edition) 501 755 book chapter http://doi.org/10.5281/zenodo.7353098 1-56098-217-9 7353098 Sigmodon inopinatus Anthony, 1924 . Am. Mus. Novit., 114:3 . TYPE LOCALITY: Ecuador , Chimborazo Prov. , Mt. Chimborazo , Urbina, 11,400 ft . DISTRIBUTION: Known only from high Andes in Azuay and Chimborazo provinces, Ecuador . COMMENTS: Lumped under S. hispidus by Cabrera (1961) following the footnoted opinion of Hershkovitz (1955a) ; reinstated as a species by Voss (1992) .