 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (August 2016) |
| Detroit River Group | |
|---|---|
| Stratigraphic range: Devonian | |
_1_(48891623066).jpg) | |
| 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 |
The Detroit River Group is a geologic group in Michigan and Ohio. It preserves fossils dating back to the Devonian period.
