y*--c 



PROCEKDINGS 



or THE 



CALIFORNIA ACADEMY OF SCIENCES 



Fourth Series 



Vol. XI, No. 19, pp. 527-601, pis. 17-41 July 10, 1922. 



XIX 



Tertiary and Quaternary History of the 



Petaluma, Point Reyes and 



Santa Rosa Quadrangles 



Roy E. Dickerson 

 Honorary Cur"'-, Department of Invertebrate Paleontology 





OCT 18 1922 * 



-^flal Mu^ ' 



SAN FRANCISCO 



Published by the Academy 



1922 



