USGS Mesozoic loc. 20765: Callovian, Alaska
collected by C.E. Kirschner 1946
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Bivalvia
- Trigoniida
- Myophorellidae
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Myophorella devexa
Eichwald 1871
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Myophorella aff. dawsoni
Whiteaves 1878
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Vaugonia doroschini
(Eichwald 1871)
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| original and current combination Trigonia doroschini | ||||||||||
| Hypotype USNM 219916 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Alaska |
| Coordinates: | 59.7° North, 153.4° West (view map) | ||
| Paleocoordinates: | 31.5° North, 86.9° West | ||
| Basis of coordinate: | based on nearby landmark |
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: | Chinitna | ||||
| Stratigraphy comments: Callovian, Chinitna Formation |
Lithology and environment
| Primary lithology: | not reported |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils,mesofossils,microfossils |
Collection methods and comments
| Collection methods: | survey of museum collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Museum repositories: | USNM | ||
| Collectors: | C.E. Kirschner | Collection dates: | 1946 |
Metadata
| Database number: | 139585 | ||
| Authorizer: | G. Stanley | Enterer: | H. Shepherd |
| Created: | 2013-02-14 07:56:24 | Last modified: | 2013-02-13 14:56:24 |
| Access level: | the public | Released: | 2013-02-14 07:56:24 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 40842. | T. P. Poulton. 1979. Jurassic Trigoniid Bivalves from Canada and Western United States of America. Geological Survey of Canada Bulletin 282 [G. Stanley/H. Shepherd/H. Shepherd] |