| Ruby River Basin Group | |
|---|---|
| Stratigraphic range: Paleogene | |
| Type | Group |
| Location | |
| Region | Montana |
| Country | United States |
The Ruby River Basin Group is a geologic group in Montana. It preserves fossils dating back to the Paleogene period.
 | This article about a specific stratigraphic formation in Montana is a stub. You can help Wikipedia by expanding it. |
