| Olentangy Shale | |
|---|---|
| Stratigraphic range: Late Devonian | |
| Type | Formation |
| Underlies | Ohio Shale |
| Overlies | Hillsboro Sandstone and Tymochtee Dolomite |
| Location | |
| Region |  Ohio |
| Country |  United States |
The Olentangy Shale is a geologic formation in Ohio. It preserves fossils dating back to the Devonian period.