CAL 



University of Texas Bulletin 



No. 1902: January 5, 1919 



On a New Exogyra from the Del Rio Clay 



and Some Observations on the Evolution 



of Exogyra in the Texas Cretaceous 



BY 



Emil Bose 



Bureau of Economic Geology and Technology 



Division of Economic Geology 

 3. A. Udden, Director of the Bureau and Head of the Division 



PUBLISHED BY 

 THE UNIVERSITY OF TEXAS 



AUSTIN 



