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 Megadontomys cryophilus (Musser, 1964) . Occas. Pap. Mus. Zool., Univ. Michigan , 636:13 . TYPE LOCALITY: Mexico , Oaxaca , Distrito de Ixtlan, 13 mi NE Llano de las Flores, south slope Cerro Pelon, 9200 ft . DISTRIBUTION: Sierra de Juarez, NC Oaxaca , Mexico . COMMENTS: Named as a subspecies of Peromyscus thomasi . Citing morphological traits and genetic differentiation reported by Werbitsky and Kilpatrick (1987) , Carleton (1989) arranged cryophilus as a species.