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	1.	Scaphitoid cephalopods of the Colorado group. Evolution of Scaphites and related genera, with descriptions and illustrations of new species and a new genus from western interior United States. by Cobban, William Aubrey, 1916- Series: Geological Survey (U.S.). Professional paper ; 239. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, U.S. Govt. Print. Off., 1951 Availability: No items available. Add to cart (remove)
	2.	The late Cretaceous ammonites Scaphites leei Reeside and Scaphites hippocrepis (DeKay) in the western interior of the United States, by William A. Cobban. by Cobban, William Aubrey, 1916- Series: Geological Survey professional paper ; 619. Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, U.S. Govt. Print. Off., 1969 Availability: No items available. Add to cart (remove)

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