THE C EN O ZOIC DEPOSITS OF TEXAS. 567 



the Equus beds which contain a "fauna more nearly and strictly 

 Pliocene than any of the lacustrine terranes hitherto found in the 

 interior of this continent." 1 This stage culminated similarly both 

 on the Stockaded plain and on the Coastal slope. 



The strong unconformity existing between the Equus beds and 

 the Pliocene deposits, together with their relations to the over- 

 lying Coast clays, seem sufficient warrant for making them the 

 base of the Pleistocene. E T DuM ble. 



'Cope. Fourth Annual Report Geological Survey of Texas. Pt. n, p. 47. 



