Detroit River Group
The Detroit River Group is a geologic group in Michigan and Ohio. It preserves fossils dating back to the Devonian period.
| Detroit River Group | |
|---|---|
| Stratigraphic range: Devonian | |
| Type | Group |
| Sub-units | Lucas Dolomite, Formosa Reef Limestone |
| Underlies | Dundee Limestone and Traverse Formation |
| Overlies | Holland Quarry Shale and Wabash Formation |
| Location | |
| Region | Indiana, Michigan and Ohio |
| Country | United States |
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