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Pierre Shale - lower unnamed shale, Niobrara County, Wyoming, USA
| Formation | Pierre Shale |
|---|---|
| Member | lower unnamed shale |
| Age: | 83.6 - 72.1 Ma Late/Upper Cretaceous |
| Interval | Campanian |
| Tectonic Setting | Cratonic basin |
| Lithology | shale/"limestone", "shale"/claystone, "shale", "shale"/ironstone, "shale"/"carbonate" |
| Number of Collections | 29 |
| Number of Occurrences | 110 |
Recorded Sample Locations
| Location | Region | Stratigraphic Name |
|---|---|---|
| Pierre Shale | Niobrara County, Wyoming, USA | Pierre Shale - lower unnamed shale |
| USGS D2121 [Pierre Shale] | Niobrara County, Wyoming, USA | Pierre Shale - lower unnamed shale |
| Pierre Shale | Niobrara County, Wyoming, USA | Pierre Shale - Lower unnamed shale |
| Pierre Shale | Niobrara County, Wyoming, USA | Pierre Shale - Lower unnamed shale |
Associated Units
| Stratigraphic Name | Age | Lithology | Occurrence Records |
|---|---|---|---|
| Pierre Shale | 70.6 - 66.0 Ma Late/Upper Cretaceous | shale/"limestone", "shale", marl/claystone, "limestone", sandstone, siltstone, "siliciclastic" | 273 |
| Pierre Shale - Mitten Black Shale | 83.5 - 70.6 Ma Late/Upper Cretaceous | shale/"limestone", "shale" | 82 |
| Pierre Shale - Red Bird Silty | 83.6 - 72.1 Ma Late/Upper Cretaceous | shale/"limestone", "shale" | 146 |
| Pierre Shale - upper unnamed shale | 72.1 - 66.0 Ma Late/Upper Cretaceous | shale/"limestone", "shale"/"carbonate" | 133 |
| Montana - Fox Hills | 70.6 - 66.0 Ma Late/Upper Cretaceous | sandstone | 16 |
| Montana - Pierre Shale | 70.6 - 66.0 Ma Late/Upper Cretaceous | shale/"limestone", "shale" | 41 |
| Montana - Pierre Shale - Kara Bentonitic | 83.6 - 72.1 Ma Late/Upper Cretaceous | limestone | 6 |
Recorded Fossils
References
| Gill J. R., Cobban W. A., et al (1966) The Red Bird Section of the Upper Cretaceous Pierre Shale in Wyoming, United States Geological Survey Professional Paper 393-A, 1-73 |
Data courtesy of: PBDB: The Paleobiology Database, Creative Commons CC-BY licenced. , GBIF: the Global Biodiversity Information Facility, various licences, iDigBio, various licences, and EOL: The Encyclopedia of Life (Open Data Public Domain). Because fossils are made of minerals too!
