| Corryville Formation | |
|---|---|
| Stratigraphic range: Ordovician | |
|   Corryville Formation (Upper Ordovician, Katian) exposed in Maysville, Kentucky.  | |
| Type | Formation | 
| Location | |
| Region | Ohio, Kentucky | 
| Country | United States | 
The Corryville Formation is a geologic formation in Ohio and Kentucky. It preserves fossils dating back to the Ordovician period.