Grand River Formation
Grand River Formation Stratigraphic range: Pennsylvanian | |
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Type | Formation |
Underlies | Ionia Formation |
Overlies | Saginaw Formation |
Location | |
Region |
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Country |
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The Grand River Formation is a geologic formation in Michigan. It preserves fossils dating back to the Pennsylvanian period.
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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