Evolution and Classification of the Pocket Gophers of the Subfamily Geomyinae

by Robert J. Russell

1950. New evidence of the Lower Miocene age of the Blacktail Deer Creek Formation in Montana. Contrib. Univ. Michigan Mus. Paleo., 8:193-204, 3 figs., 1 map, July 28.

Hibbard, C. W., and Mooser, O.

1963. A porcupine from the Pleistocene of Aguascalientes, Mexico. Contrib. Mus. Paleo. Univ. Michigan, 18:245-250, November 22.

Hibbard, C. W., Ray, D. E., Savage, D. E., Taylor, D. W., Guilday, G. E.

1965. Quaternary mammals of North America. In Quaternary of the United States. Eds. H. E. Wright, Jr., and D. G. Frey. Princeton Univ. Press, Princeton, pp. x + 922.

Hibbard, C. W., and Riggs, E.

1949. Upper Pliocene vertebrates from Keef Canyon, Meade County, Kansas. Geol. Soc. Amer. Bull., 60(5):829-860, 11 figs., 5 pls.

Hibbard, C. W., and Taylor, D. W.

1960. Two late Pleistocene faunas from southwestern Kansas. Contrib. Univ. Michigan Mus. Paleo., 16(1):1-223, 16 pls., 18 figs.