USGS D2905, Red Bird: Early/Lower Campanian, Wyoming
collected by L.G. Schultz, J.R. Gill, W.A. Cobban 1960
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Myalinida
- Inoceramidae
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Inoceramus subcompressus
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Cephalopoda
- Ammonitida
- Scaphitidae
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Hoploscaphites sp.
Nowak 1911
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Cephalopoda
- Ammonitida
- Baculitidae
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Baculites informal sp. smooth
Lamarck 1799
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= Baculites cobbani
Khakimov 1976
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Atabekyan and Khakimov 1976 | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Wyoming | County: | Niobrara |
| Coordinates: | 43.3° North, 104.3° West (view map) | ||||
| Paleocoordinates: | 49.4° North, 72.4° West | ||||
| Basis of coordinate: | estimated from map | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| Key time interval: | Early/Lower Campanian | ||
| Age range of interval: | 83.60000 - 72.10000 m.y. ago |
Stratigraphy
| Formation: | Pierre Shale | Member: | Mitten Black Shale | ||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Unit 21, 217-233 feet above the base of the Mitten Member | |||||
Lithology and environment
| Primary lithology: | concretionary,ferruginous,phosphatic,black,gray lithified calcareous "shale" |
| Lithology description: "shale, black gray, weathers soft, flaky, contains small gray to grayish orange weathering ls concretions at 22, 26, 27, 33, 37, and 38 ft above base, and persistent beds of grayish orange to light brown weathering shaly ls (cone-in-cone structure) at base and 18 ft above base, grayish orange weathering phosphatic nodules and fossiliferous ls concretions present 5-18 ft above base." | |
| Environment: | offshore |
Taphonomy
| Modes of preservation: | body,original aragonite |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | mechanical,field collection | ||
| Reason for describing collection: | biostratigraphic analysis | ||
| Museum repositories: | USGS | ||
| Collectors: | L.G. Schultz, J.R. Gill, W.A. Cobban | Collection dates: | 1960 |
Metadata
| Database number: | 186543 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2017-06-24 14:20:35 | Last modified: | 2017-06-24 14:20:35 |
| Access level: | the public | Released: | 2017-06-24 14:20:35 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 45. | J. R. Gill, W. A. Cobban, and P. M. Kier. 1966. The Red Bird Section of the Upper Cretaceous Pierre Shale in Wyoming. United States Geological Survey Professional Paper 393-A:1-73 [J. Alroy/M. Sommers/A. Clement] |
Secondary references:
| 62097 | A. A. Atabekyan and F. K. Khakimov. 1976. Kampanskie i Maastrikhtskie ammonity sredney Azii 1-146 [M. Clapham/M. Clapham/M. Clapham] |