R- ungenhom 



STATE OF ILLINOIS William G. Stratton, Governor 



DEPARTMENT OF REGISTRATION AND EDUCATION 



Vera M. Binks, Director 



1958 



CONODONTS from the 

 GLEN DEAN FORMATION 

 (CHESTER) of the ILLINOIS BASIN 



Carl 6. Rexroad 



REPORT OF INVESTIGATIONS 209 



ILLINOIS STATE GEOLOGICAL SURVEY 



JOHN C. FRYE. Chief URBANA, ILLINOIS 



