USGS Mesozoic loc. 3002: Bajocian, Alaska
collected by T.W. Stanton; F.H. Moffit 1904; 1920
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Bivalvia
- Trigoniida
- Myophorellidae
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Myophorella argo
Crickmay 1930
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| USNM 219879 from USGS 10521, others from 3002 | ||||||||||
| see common names | ||||||||||
Geography
| Country: | United States | State/province: | Alaska |
| Coordinates: | 60.2° North, 152.7° West (view map) | ||
| Paleocoordinates: | 28.9° North, 84.4° West | ||
| Basis of coordinate: | based on nearby landmark |
Time
| Period: | Jurassic | Epoch: | Middle Jurassic |
| Stage: | Bajocian | 10 m.y. bin: | Jurassic 4 |
| Key time interval: | Bajocian | ||
| Age range of interval: | 170.90000 - 168.20000 m.y. ago |
Stratigraphy
| Geological group: | Tuxedni | Formation: | Cynthia Falls Sandstone |
Lithology and environment
| Primary lithology: | "limestone" |
| Secondary lithology: | conglomerate |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: From Martin (1926): Limestone conglomerate with clavellate and undulate Trigonias, etc. (lots 3002 and 10521) 1 ft | |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | body,cast,mold/impression |
| Size of fossils: | macrofossils,mesofossils,microfossils |
Collection methods and comments
| Collection methods: | survey of museum collection | ||
| Reason for describing collection: | taxonomic analysis | ||
| Collectors: | T.W. Stanton; F.H. Moffit | Collection dates: | 1904; 1920 |
Metadata
| Also known as: | 10521 | ||
| Database number: | 139473 | ||
| Authorizer: | G. Stanley | Enterer: | H. Shepherd |
| Modifier: | H. Shepherd | ||
| Created: | 2013-02-12 07:20:32 | Last modified: | 2013-02-11 16:51:17 |
| Access level: | the public | Released: | 2013-02-12 07:20:32 |
| 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] |