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Niobrara, USA
Formation | Niobrara |
---|---|
Member(s) | Fort Hays Limestone Smoky Hill Smoky Hill Chalk Smoky Hill Shale |
Age: | 83.5 - 70.6 Ma Late/Upper Cretaceous |
Interval | Coniacian - Santonian |
Lithology | sandstone/"shale", "shale", chalk |
Number of Collections | 6 |
Number of Occurrences | 22 |
Recorded Sample Locations
Associated Units
Stratigraphic Name | Age | Lithology | Occurrence Records |
---|---|---|---|
Niobrara - Fort Hays Limestone | 93.5 - 89.3 Ma Late/Upper Cretaceous | limestone | 37 |
Niobrara - Smoky Hill | 83.6 - 72.1 Ma Late/Upper Cretaceous | chalk | 3 |
Niobrara - Smoky Hill Chalk | 86.3 - 66.0 Ma Late/Upper Cretaceous | lime mudstone, chalk | 15 |
Niobrara - Smoky Hill Shale | 83.5 - 70.6 Ma Late/Upper Cretaceous | shale, "limestone", sandstone | 158 |
Colorado - Niobrara - Smoky Hill Chalk | 83.5 - 70.6 Ma Late/Upper Cretaceous | chalk, "shale", "carbonate", mudstone, "limestone", "shale"/"limestone" | 127 |
Colorado - Niobrara - Smoky Hill Shale | 85.8 - 83.5 Ma Late/Upper Cretaceous | shale, "limestone" | 42 |
Montana - Pierre Shale - Gammon Ferruginous | 83.5 - 70.6 Ma Late/Upper Cretaceous | shale | 12 |
Montana - Pierre Shale - Sharon Springs | 83.5 - 70.6 Ma Late/Upper Cretaceous | shale, "shale"/"limestone", "limestone" | 49 |
Recorded Fossils
References
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!