| Michigan Formation | |
|---|---|
| Stratigraphic range: Mississippian | |
| Type | Formation |
| Underlies | Bayport Limestone |
| Overlies | Marshall Sandstone |
| Location | |
| Region | Michigan |
| Country | United States |
The Michigan Formation is a geologic formation in the U.S. state of Michigan. It preserves fossils dating back to the Mississippian period.