Pierre Shale
E364206
UNEXPLORED
Pierre Shale is a widespread Late Cretaceous marine sedimentary rock formation of the Western Interior Seaway in North America, known for its rich fossil content and extensive outcrops across the Great Plains and Rocky Mountain regions.
Referenced by (1)
| Subject (surface form when different) | Predicate |
|---|---|
|
Hell Creek Formation
→
|
overlies |