Warsaw Formation
The Warsaw Formation is a geologic formation in Illinois, Iowa and Missouri. It preserves fossils dating back to the Mississippian subperiod.
| Warsaw Formation | |
|---|---|
| Stratigraphic range: Mississippian | |
| Type | Formation |
| Underlies | Salem Formation |
| Overlies | Keokuk Limestone |
| Location | |
| Region | Illinois, Iowa, Missouri |
| Country | United States |
| Type section | |
| Named for | Warsaw, Hancock County, Illinois |
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