USGS 9205, Little Thompson River: Late/Upper Maastrichtian, Colorado
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Scaphitidae
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Hoploscaphites birkelundae
(Landman and Waage 1993)
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Colorado | County: | Weld |
| Coordinates: | 40.3° North, 105.0° West (view map) | ||||
| Paleocoordinates: | 46.9° North, 81.1° West | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Maastrichtian | 10 m.y. bin: | Cretaceous 8 |
| Key time interval: | Late/Upper Maastrichtian | Ammonoid zone: | Hoploscaphites birkelundae |
| Age range of interval: | 72.10000 - 66.00000 m.y. ago |
Stratigraphy
| Formation: | Pierre Shale | ||||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: Near base of upper transition member of the Pierre Shale | |||||
Lithology and environment
| Primary lithology: | lithified "shale" |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USNM |
Metadata
| Database number: | 178294 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2016-04-30 10:08:20 | Last modified: | 2016-04-30 10:08:20 |
| Access level: | the public | Released: | 2016-04-30 10:08:20 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 59025. | N. H. Landman and W. A. Cobban. 2003. Ammonites from the upper part of the Pierre Shale and Fox Hills Formation of Colorado. American Museum Novitates 3388:1-45 [M. Clapham/M. Clapham] |