Alpena Limestone
| Alpena Formation Stratigraphic range: Middle Devonian | |
|---|---|
| Type | Formation |
| Unit of | Traverse Group |
| Sub-units | Four Mile Dam Member and Newton Creek Member |
| Underlies | Thunder Bay Limestone |
| Overlies | Long Lake Limestone |
| Location | |
| Region |
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| Country |
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The Alpena Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
References
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 2014-07-31. Retrieved 22 June 2014.
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