| Waynesville Formation | |
|---|---|
| Stratigraphic range: Late Ordovician | |
 Waynesville Formation (Upper Ordovician) exposed near St. Leon, Indiana. | |
| Type | Formation |
| Underlies | Liberty Formation |
| Overlies | Arnheim Formation |
| Lithology | |
| Primary | limestone |
| Other | shale |
| Location | |
| Region |  Ohio Indiana Kentucky |
| Country |  United States |
The Waynesville Formation is a geologic formation in Ohio and Indiana. It preserves fossils from the Late Ordovician period.