638 



ALLAN HANCOCK PACIFIC EXPEDITIONS 



VOL. 5 



Chart X 



Former Confluence of Atlantic and Pacific Oceans in Upper Miocene-Lower 

 Pliocene. 



(Charts Vlll, IX, and X reprinted by permission from 'Historical Geology of 

 the Antillean-Caribbean Region' by C. Schuchert, published by John Wiley & Sons, 

 Inc., New York.) 



