F'ROCEEOINGS 



OF THE 



CALIFORNIA ACADEMY OF SCIENCES 



Fourth Series 

 Vol. VII, Nos. 6, 7, 8, pp. 157-205, pis. 27-31. July 30, 1917 



VI 



Climate and its Influence upon the Oligocene 

 Faunas of the Pacific Coast, with Descrip- 

 tions of some new Species from the 

 Moiopophorus lincolnensis Zone 



VII 



Climatic Zones of Martinez Eocene Time 



VIII 



Ancient Panama Canals 



Roy E. Dickerson 



Curator, Department of Invertebrate Paleontology 



PRINTED FROM THE 

 JOHN W HENDRIE PUBLICATION ENDOWMENT 



SAN FRANCISCO 



Published by the Academy 



1917 



