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