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STATE OF ILLINOIS 



DWIGHT H. GREEN, Governor 



DEPARTMENT OF REGISTRATION AND EDUCATION 



FRANK G. THOMPSON, Director 



DIVISION OF THE 



STATE GEOLOGICAL SURVEY 



M. M. LEIGHTON, Chief 

 URBANA 



REPORT OF INVESTIGATIONS— NO. 98 



SMALLER FORAMINIFERA FROM THE PORTERS CREEK 

 FORMATION (PALEOCENE) OF ILLINOIS 



CHALMER L. COOPER 



Reprinted from the Iournal of Paleontology, 

 Vol. 18, No. 4, July, 1944 





PRINTED BY AUTHORITY OF THE STATE OF ILLINOIS 



URBANA, ILLINOIS 



1944 



