| Mifflintown Formation | |
|---|---|
| Stratigraphic range: Silurian | |
| Type | Formation |
| Underlies | Bloomsburg Formation |
| Overlies | Keefer Formation |
| Location | |
| Region | Maryland, Pennsylvania, and Virginia |
| Country | United States |
The Mifflintown Formation is a geologic formation in Maryland, Pennsylvania, and Virginia. It preserves fossils dating back to the Silurian period. The type location is near Mifflintown, Pennsylvania.[1]