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University of Texas Bulletin 



PARALLELS BETWEEN UPPER WASHITA AND LOWER WASHITA 



ECHINOIDS 



LOWER WASHITA 

 (below Weno formation) 



Holectypus planatus Roemer 

 Enallaster texanus Roemer 



Hemiaster whitei Clark and E. elegans 

 Shumard 



UPPER WASHITA 

 (Weno and higher formations) 



H. limitis Bose 



E. bravoensis Bose 



E. riovistae Adkins 



E. wenoensis Adkins 



E. sp. aff. texanus Roemer 



H. calvini Clark 



