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On a new Exogyra from the Del Rio clay and some observations on the evolution of Exogyra in the Texas Cretaceous, by Emil Böse. Bureau of economic geology and technology, Division of economic geology.
By: Böse, Emil,
Publication info: Austin, Tex.,The University[1919]
Contributed by: University of California Libraries (archive.org)
Subjects: Bivalvia, Fossil Exogyra
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