USGS Mesozoic 19757, Wide Bay: Late/Upper Aalenian, Alaska
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Cephalopoda
- Nautilida
- Cenoceratidae
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Bisiphytes (Cenoceras) imlayi
Kummel 1954
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| recombined as Cenoceras imlayi | |||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Alaska |
| Coordinates: | 57.4° North, 156.4° West (view map) | ||
| Paleocoordinates: | 24.4° North, 85.6° West | ||
| Basis of coordinate: | estimated from map | ||
| Geographic resolution: | outcrop |
Time
| Period: | Jurassic | Epoch: | Middle Jurassic |
| Stage: | Aalenian | 10 m.y. bin: | Jurassic 3 |
| Key time interval: | Late/Upper Aalenian | ||
| Age range of interval: | 174.70000 - 170.90000 m.y. ago |
Stratigraphy
| Formation: | Kialagvik | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: 975 to 800 feet below top of Kialagvik formation | |||||
Lithology and environment
| Primary lithology: | lithified "siliciclastic" |
| Environment: | marine indet. |
Taphonomy
| Modes of preservation: | mold/impression |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | USNM |
Metadata
| Database number: | 180720 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2016-07-29 00:40:35 | Last modified: | 2016-07-29 00:40:35 |
| Access level: | the public | Released: | 2016-07-29 00:40:35 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 59996. | B. Kummel. 1954. Jurassic nautiloids from western North America. Journal of Paleontology 28:320-324 [M. Clapham/M. Clapham/M. Clapham] |