BUI,I,ETINS 



OF 



AM:^RICAN PAlvKONTOI^OGY 



Vol. 9 



No. 39 



The Miocene of Northern Costa Rica 



With Notes On Its General Stratigraphic Relations 



BY 



A. A. OLSSON 



Part I 



{Pp. I- 1 68, April 21) 

 ig22 



Harris Co. 



Cornell University, Ithaca, N. Y. 



U. S. A. 



