| Altamont Formation | |
|---|---|
| Stratigraphic range: Carboniferous | |
| Type | Formation |
| Location | |
| Region |  Illinois |
| Country |  United States |
The Altamont Formation is a geologic formation in Illinois. It preserves fossils dating back to the Carboniferous period.
| Altamont Formation | |
|---|---|
| Stratigraphic range: Carboniferous | |
| Type | Formation |
| Location | |
| Region | Illinois |
| Country | United States |
The Altamont Formation is a geologic formation in Illinois. It preserves fossils dating back to the Carboniferous period.
