Literature Cited

Alf, R.

1962. A new species of the rodent Pipestoneomys from the Oligocene of Nebraska. Breviora, Mus. Comp. Zool., no. 172, pp. 1-7, 3 figs.

Galbreath, E. C.

1953. A contribution to the Tertiary geology and paleontology of northeastern Colorado. Univ. Kansas Paleont. Cont., Vertebrata, art. 4, pp. 1-120, 2 pls., 26 figs.

Hough, J., and Alf, R.

1958. A Chadron mammalian fauna from Nebraska. Journ. Paleon. 30: 132-140, 4 figs.

Jepsen, G. L.

1934. A revision of the American Apatemyidae and the description of a new genus, Sinclairella, from the White River Oligocene of South Dakota. Proc. Amer. Philos. Soc., 74:287-305, 3 pls., 4 figs.

McKenna, M. C.