| Mercer Formation | |
|---|---|
| Stratigraphic range: Carboniferous | |
| Type | Formation |
| Location | |
| Region | Pennsylvania |
| Country | United States |
The Mercer Formation is a geologic formation in Pennsylvania. It preserves fossils dating back to the Carboniferous period.
 | This article about a specific stratigraphic formation in Pennsylvania is a stub. You can help Wikipedia by adding missing information. |
