| Bisher Formation | |
|---|---|
| Stratigraphic range: Sheinwoodian[1] | |
| Type | Formation |
| Underlies | Boyle Formation and Lilley Formation |
| Overlies | Crab Orchard Formation and Estill Shale |
| Location | |
| Region | Kentucky and Ohio |
| Country |  United States |
The Bisher Formation is a geologic formation in Ohio. It preserves fossils dating back to the Silurian period.