Author: Leonard, A.B., 1950.:
Title: A Yarmouthian molluscan fauna in the Midcontinent Region of the United States.
Description: [Univ. Kansas Paleont. Contr., Mollusca, Art. 3.] Lawrence, Ks. Small 4to. Pp. 48, several photos on 6 pls., 4 figs., refs., index. Orig. wrs. - Upper Pleistocene.

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