Alpena Limestone
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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 | ![]() |
Country | ![]() |
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". Retrieved 17 December 2021.