Arnheim Formation
The Arnheim Formation is a geologic formation in Ohio. It preserves fossils dating back to the Ordovician period.
| Arnheim Formation | |
|---|---|
| Stratigraphic range: Katian | |
Fossil brachiopod from the Arnheim Formation in Ohio | |
| Type | Formation |
| Underlies | Waynesville Formation |
| Overlies | Grant Lake Formation |
| Lithology | |
| Primary | limestone |
| Other | shale |
| Location | |
| Region | Ohio |
| Country | United States |
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