Author: Cobban W.A.,
Title: The Late Cretaceous Ammonites Scaphites Leei Reeside and Scaphites Hippocrepis (Dekay) in the Western Interior of the United States
Description: 1969. In 4to, broch., pp. 29 + 5 pls. with facing captions and 21 figs. Geol. Surv. Prof. Paper, 619. Ex Library stamps but very good copy

Keywords: shells fossil paleontology geology


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