COMPANlk GUATEMALA 



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 

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



PUBLISHED BY THE UNIVERSITY SIX TIMES A MONTH. AND ENTERED AS 



SECOND-CLASS MATTER AT THE POSTOFFICE AT AUSTIN. TEXAS. 



UNDER THE ACT OF AUGUST 24. 1912 



LIBRARY 



