Thomomys umbrinus
Museum of Southwest Biology. 1990. Unpublished listing of mammal species specimens from Hidalgo County at MSB. Database print-out.
New Mexico Department of Game and Fish. September, 2000. Threatened and endangered species of New Mexico, biennial review and recommendations. Revised Draft. 139 p.
Hinesley, L.L. and C.S. Thaeler. 1977. Karyotype and distribution of the southern pocket gopher, Thomomys umbrinus emotus. Goldman. J. of Mamm. 58:235-237.
Hoffmeister, D. F. 1986. Mammals of Arizona. University of Arizona Press and Arizona Game and Fish Department. 602 pp.
Cook, J.A. 1986. The mammals of the Animas Mountains and adjacent areas, Hilalgo County, New Mexico. Occasional papers The Museum of Southwestern Biology. 1(4):1-45.
Mathis, V.L., Hafner, M.S., and D.J. Hafner. 2014. Evolution and phylogeography of the Thomomys umbrinus species complex (Rodentia: Geomyidae). Journal of Mammalogy 95(4):754-771.