Groos Quarry Formation
| Groos Quarry Formation Stratigraphic range: Ordovician | |
|---|---|
| Type | Formation |
| Unit of | Trenton Group |
| Location | |
| Region |  Michigan |
| Country |  United States |
The Groos Quarry Formation is a geologic formation in Michigan. It preserves fossils dating back to the Ordovician period.
See also[]
References[]
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.
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- Ordovician Michigan
- Ordovician southern paleotropical deposits
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