UNIVERSITY OF CALIFORNIA PUBLICATIONS 



BULLETIN OF THE DEPARTMENT OF 



GEOLOGY 



Vol. 9, No. 15, pp. 261-360, plates 12-35 Issued May j, 1916 



MESOZOIC AND CENOZOIC MACTRINAE 

 OF THE PACIFIC COAST OF 

 NORTH AMERICA 



BY 



EARL L. PACKARD 



UNIVERSITY OP CALIFORNIA PRESS 

 BERKELEY 



