480 



S 



14.GS: 

 CIR480 

 c. 1 



ILLINOIS GEOLOGICAL 

 SURVEY LIBRARY 



/fM 1/1 



STATE OF ILLINOIS 



DEPARTMENT OF REGISTRATION AND EDUCATION 



Development of Paleobotany 

 in the llinois Basin 



Tom L. Phillips 



Hermann W. Pfefferkorn 



Russel A. Peppers 



ILLINOIS STATE 



John C. Frye, Chief 

 CIRCULAR 480 



GEOLOGICAL SURVEY 



Urbana, IL 61801 

 1973 



