| Simpson Group | |
|---|---|
| Stratigraphic range: Ordovician | |
| Type | Group |
| Sub-units | Bromide Formation |
| Location | |
| Region | Oklahoma |
| Country | United States |
The Simpson Group is a geologic group in Oklahoma. It preserves fossils dating back to the Ordovician period.
References
References
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.