Petrolia Formation
| Petrolia Formation | |
|---|---|
| Stratigraphic range: Permian | |
| Outcrops of the Petrolia Formation | |
| Type | Formation | 
| Unit of | Wichita Group | 
| Underlies | Waggoner Ranch Formation | 
| Overlies | Nocona Formation | 
| Location | |
| Region | Texas | 
| Country | United States | 
The Petrolia Formation is a geologic formation in Texas. It preserves fossils dating back to the Permian period.