Hennessey Formation
| Hennessey Formation | |
|---|---|
| Stratigraphic range: Permian | |
| Type | Formation | 
| Overlies | Garber Sandstone | 
| Location | |
| Region | Oklahoma | 
| Country | United States | 
The Hennessey Formation is a geologic formation in Oklahoma. It preserves fossils dating back to the Permian period.