EUR. 



MID 

 CON. 



NORTHERN ILLINOIS 



SOUTHERN ILLINOIS 



WESTERN KENTUCKY 



INDIANA 



BED OR 

 MEMBER 



BED OR 

 MEMBER 



BED OR 

 MEMBER 



BED OR 

 MEMBER 



O 



CD 



co 



LU 



Millersville Ls 

 Carthage Ls 



Chapel (No. 8) C 



West Franklin Ls 

 Danville (No. 7) C 



Herrin (No. 6) C 



Springfield (No. 5) C 



Colchester (No. 2) C 



Brush C* 



Hermon C* 

 Rock Island (No. 

 Pope Creek C 

 Tarter C* 

 Manley C 



1)C 



Woodbury Ls 



Calhoun C 



Millersville Ls 

 Flat Creek C 



Carthage Ls 



Womac C 



Chapel (No. 8) C 



West Franklin Ls 

 Danville (No. 7) C 



co 



Springfield (No. 5) C 



Houchin Creek (No.4)C 

 Survant C 

 Colchester (No. 2) C 



Murphysboro C 



New Burnside C* 

 Delwood C* 



Lewisport C* 



Oldtown C 

 Willis C 

 Tarter C 



unnamed C* 



Bell C* 

 Reynoldsburg C* 



Pounds Ss 



Gentry C 



Battery Rock Ss 



UJ 



Sulfur Springs C 



Carthage Ls 



West Franklin Ls 



Herrin C 

 Springfield C 



Houchin Creek C 

 Survant C 

 Colchester C 

 Davis C 



Bancroft C ?* 

 Lewisport C* 



Empire C 

 Ice House C 



Dunbar C* 



Smith C 



Bell C, Breckinridge C* 



Bee Springs Ss 

 Main Nolan C 

 Kyrock Ss 



w 



LU 



Livingston Ls 



Carthage Ls 

 Parker C 

 Ditney C 



West Franklin Ls 

 Danville C 



Springfield C 



Houchin Creek C 

 Survant C 

 Colchester C 

 Seelyville C 



unnamed C* 



Buffaloville C* 



Minshall C 

 Upper Block C 

 Lower Block C* 

 Mariah Hill C* 



Blue Creek C 



St. Meinrad C* 



French Lick C 



* contains Botryococcus 



PETE. = PETERSBURG DUG. = DUGGER S. = SHELBURN 

 LINT. = LINTON BRZ. = BRAZIL 



Figure 3 Stratigraphic and geographic occurrences of Botryococcus in the Illinois Basin. The alga has been found in 

 uppermost Morrowan to lower Desmoinesian coal beds. 



