Chester Formation
Appearance
	
	
| Chester Formation | |
|---|---|
| Stratigraphic range: Carboniferous | |
| Type | Formation | 
| Location | |
| Region | Illinois | 
| Country | United States | 
The Chester Formation is a geologic formation in Illinois. It preserves fossils dating back to the Carboniferous period.
See also
[edit]References
[edit]- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.