USGS Mesozoic 23382, Bitter Creek: Late/Upper Campanian, Montana
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Ammonitida
- Baculitidae
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Baculites compressus
Say 1920
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Cephalopoda
- Ammonitida
- Nostoceratidae
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Didymoceras stevensoni
(Whitfield 1877)
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Montana |
| Coordinates: | 48.6° North, 106.9° West (view map) | ||
| Paleocoordinates: | 55.0° North, 72.3° West | ||
| Basis of coordinate: | based on nearby landmark | ||
| Geographic resolution: | outcrop |
Time
| Period: | Cretaceous | Epoch: | Late/Upper Cretaceous |
| Stage: | Campanian | 10 m.y. bin: | Cretaceous 7 |
| Key time interval: | Late/Upper Campanian | ||
| Age range of interval: | 83.60000 - 72.10000 m.y. ago |
Stratigraphy
| Formation: | Bearpaw | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: Unit 2, upper part | |||||
Lithology and environment
| Primary lithology: | poorly lithified "shale" |
| Environment: | offshore |
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: | 213163 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2020-08-26 22:31:41 | Last modified: | 2020-08-26 22:31:41 |
| Access level: | the public | Released: | 2020-08-26 22:31:41 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 73533. | F. S. Jensen and H. D. Varnes. 1964. Geology of the Fort Peck area, Garfield, McCone and Valley counties, Montana. United States Geological Survey Professional Paper 414-F:1-49 [M. Clapham/M. Clapham] |