. Cretaceous deposits of the eastern Gulf region and species of Exogyra from the eastern Gulf region and the Carolinas. Geology, Stratigraphic; Geology; Bivalves, Fossil. U. S. GEOLOGICAL SURVEY PROFESSIONAL PAPER 81 PLATE XVIII. EXOGYRA COSTATA Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stephenson, Lloyd William, b. 1876. Washington, Govt. print. off.

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Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectgeology