| Clays Ferry Formation | |
|---|---|
| Stratigraphic range: Ordovician | |
| Type | Formation |
| Underlies | Garrard Siltstone |
| Overlies | Lexington Limestone |
| Location | |
| Region |  Ohio |
| Country |  United States |
The Clays Ferry Formation is a geologic formation in Ohio. It preserves fossils dating back to the Ordovician period.