Iola Formation
The Iola Formation is a geologic formation in Illinois and Oklahoma. It preserves fossils dating back to the Carboniferous period.
| Iola Formation Stratigraphic range: Carboniferous | |
|---|---|
 Fossiliferous limestone (Raytown Member, Iola Formation; Elk County, Kansas) | |
| Type | Formation |
| Unit of | Kansas City Group |
| Sub-units | Raytown Member |
| Location | |
| Region |     |
| Country |  |
References
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 31 July 2014. Retrieved 22 June 2014.
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