UCMP A64, Willapa River at Big Bend: Rupelian, Washington
collected by J. Wyatt Durham
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
|
Cephalopoda
- Nautilida
- Aturiidae
|
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| see common names | |||||||
Geography
| Country: | United States | State/province: | Washington | County: | Pacific |
| Coordinates: | 46.6° North, 123.6° West (view map) | ||||
| Paleocoordinates: | 51.6° North, 106.6° West (Wright 2013) | ||||
| Basis of coordinate: | based on nearby landmark | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Oligocene |
| Stage: | Rupelian | 10 m.y. bin: | Cenozoic 4 |
| Key time interval: | Rupelian | ||
| Age range of interval: | 33.9 - 27.3 m.y. ago |
Stratigraphy
| Formation: | Lincoln Creek | ||||
| Stratigraphic resolution: | group of beds | ||||
| Stratigraphy comments: "Keasey equivalent" beds, likely the Lincoln Creek Formation. Given the location, it is probably from the lower part of the stratigraphy and of early Oligocene (or perhaps late Eocene) age. | |||||
Lithology and environment
| Primary lithology: | lithified "shale" |
| Environment: | deep-water indet. |
| Geology comments: The molluscan fossils from this locality were regarded as being a “deep-water” assemblage by Hickman (1984), but estimates of water depth vary from approximately 20 to 100 m (Armentrout 1973), to more than 200 m (Hickman 1980). The section deepens upward and if this locality is near the cold-seep deposits it likely represents bathyal/slope depths. | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Reason for describing collection: | taxonomic analysis |
| Museum repositories: | UCMP |
| Collectors: | J. Wyatt Durham |
Metadata
| Database number: | 180416 | ||
| Authorizer: | M. Clapham | Enterer: | M. Clapham |
| Modifier: | M. Clapham | Research group: | marine invertebrate |
| Created: | 2016-07-16 10:15:52 | Last modified: | 2025-02-22 15:12:02 |
| Access level: | the public | Released: | 2016-07-16 10:15:52 |
| Creative Commons license: | CC0 |
Reference information
Primary reference:
| 59868. | A. K. Miller and H. R. Downs. 1950. Tertiary nautiloids of the Americas: supplement. Journal of Paleontology 24:1-18 [M. Clapham/M. Clapham] |