| Richmond Group | |
|---|---|
| Stratigraphic range: Ordovician | |
| Type | Group |
| Sub-units | Big Hill Formation. Whitewater Formation |
| Location | |
| Region |  Michigan |
| Country |  United States |
The Richmond Group is a geologic group in Michigan. It preserves fossils dating back to the Ordovician period.
In 1951, E. B. Branson, Mehl and C.C. Branson published an article about the Richmond Group conodonts of Kentucky and Indiana.[1]
- ^ Richmond Conodonts of Kentucky and Indiana. E. B. Branson, M. G. Mehl and C. C. Branson, Journal of Paleontology, Vol. 25, No. 1 (Jan., 1951), pages 1-17 (Stable URL retrieved 29 April 2016)