USGS Mesozoic Loc. 20991 - Twin Creek Limestone: Callovian, Wyoming
collected by R. W. Imlay 1947
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Pectinida
- Pectinidae
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Camptonectes sp.
Meek 1864
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Bivalvia
- Trigoniida
- Myophorellidae
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Vaugonia sp.
Crickmay 1930
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Wyoming | County: | Lincoln |
| Coordinates: | 41.9° North, 110.9° West (view map) | ||||
| Paleocoordinates: | 35.2° North, 52.7° West | ||||
| Basis of coordinate: | estimated from map |
Time
| Period: | Jurassic | Epoch: | Middle Jurassic |
| Stage: | Callovian | 10 m.y. bin: | Jurassic 5 |
| Key time interval: | Callovian | ||
| Age range of interval: | 165.30000 - 161.50000 m.y. ago |
Stratigraphy
| Formation: | Twin Creek Limestone | Member: | Leeds Creek | ||
| Stratigraphy comments: 97ft above base of member. |
Lithology and environment
| Primary lithology: | silty "limestone" |
| Lithology description: From 6 ft of silty limestone. | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | biostratigraphic analysis | ||
| Museum repositories: | USNM | ||
| Collectors: | R. W. Imlay | Collection dates: | 1947 |
Metadata
| Database number: | 167323 | ||
| Authorizer: | S. Holland | Enterer: | P. Monarrez |
| Created: | 2015-03-11 18:46:08 | Last modified: | 2015-03-11 18:46:08 |
| Access level: | the public | Released: | 2015-03-11 18:46:08 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 54548. | R. W. Imlay. 1967. Twin Creek Limestone (Jurassic) in the Western Interior of the United States. United States Geological Survey Professional Paper 540:1-105 [S. Holland/P. Monarrez] |