Black River Formation
The Black River Formation is a geologic formation in Quebec, Canada and Michigan, United States. It preserves fossils dating back to the Ordovician period.
| Black River Formation Stratigraphic range: Middle Ordovician | |
|---|---|
| Type | Formation |
| Underlies | Trenton Formation |
| Overlies | Au Train Formation |
| Location | |
| Region | Quebec and Michigan |
| Country | Canada and the United States |
See also
References
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Archived from the original on 31 July 2014. Retrieved 8 July 2014.
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