Author: Elbert, J., 1901.:
Title: Das untere Angoumien in den Osningbergketten des Teutoburgerwaldes. Verh. Naturhist. Ver. Preuss. Rheinl. Westf., 58:
Description: pp. 77-167, 3 fold. pls. of fossils, 1 fold. section, 14 figs. in text and on 1 pl., refs. Offprint, orig. wrs. - Cretaceous.

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