Author: Brown, R.W., 1939.:
Title: Fossil plants from the Colgate Member of the Fox Hills Sandstones and adjacent strata. [U.S. Geol. Surv. Prof. Pap., 189-I.]
Description: Washington. 4to. Pp. ii,239-275, many photos on 16 pls., 1 map, index. Orig. wrs. - Upper Cretaceous.

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