NWM Loc. C501 - Mist [Keasey Fm]: Priabonian, Oregon
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
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Chondrichthyes
- Squatinidae
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Squatina sp.
Dumeril 1806
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Welton 1972 | ||||||
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Chondrichthyes
- Centrophoridae
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Centrophorus sp.
Müller and Henle 1837
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Welton 1972 | ||||||
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Chondrichthyes
- Squalomorphii
- Hexanchidae
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Heptranchias sp.
Rafinesque 1810
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Welton 1972 | ||||||
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Notorhynchus sp.
Ayres 1855
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Welton 1972 | ||||||
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Chondrichthyes
- Lamniformes
- Odontaspididae
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Odontaspis sp.
Agassiz 1838
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Welton 1972 | ||||||
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Chondrichthyes
- Lamniformes
- Cetorhinidae
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Keasius taylori
Welton 2013
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1 specimen | ||||||
| see common names | |||||||
Geography
| Country: | United States | State/province: | Oregon | County: | Columbia |
| Coordinates: | 46.0° North, 123.3° West (view map) | ||||
| Paleocoordinates: | 46.3° North, 111.0° West | ||||
| Basis of coordinate: | stated in text | ||||
| Geographic resolution: | outcrop |
Time
| Period: | Paleogene | Epoch: | Eocene |
| Stage: | Priabonian | 10 m.y. bin: | Cenozoic 3 |
| Key time interval: | Priabonian | ||
| Age range of interval: | 37.71000 - 33.90000 m.y. ago |
Stratigraphy
| Formation: | Keasey | Member: | Middle | ||
| Stratigraphic resolution: | bed | ||||
| Stratigraphy comments: LITHOSTRATIGRAPHY: The Keasey Fm overlies the late Eocene Cowlitz Fm, and underlies the Pittsburg Bluff Fm, and is subdivided into three informal members. STRATIGRAPHIC POSITION: In the upper part of the middle member of the Keasey Fm. | |||||
Lithology and environment
| Primary lithology: | planar lamination,micaceous,gray siltstone |
| Secondary lithology: | mudstone |
| Includes fossils? | Y |
| Includes fossils? | Y |
| Lithology description: Dark gray, highly micaceous, laminated siltstone and interbedded mudstone | |
| Environment: | deep-water indet. |
| Geology comments: No general geologic data provided | |
Taphonomy
| Modes of preservation: | body |
| Size of fossils: | macrofossils |
Collection methods and comments
| Collection methods: | surface (in situ),survey of museum collection |
| Reason for describing collection: | taxonomic analysis |
| Collection method comments: COLLECTOR: P. Kirkland. REPOSITORY: Northwest Museum of Natural History (NWM), Portland, Oregon. | |
| Taxonomic list comments:COVERAGE: Limited to chondrichthyans NOMENCLATURE: Authoritative publication, with modern nomenclature, and species-resolution identifications. | |
Metadata
| Database number: | 161921 | ||
| Authorizer: | A. Hendy, M. Uhen | Enterer: | A. Hendy, M. Uhen | Research group: | marine invertebrate |
| Created: | 2014-09-15 21:35:16 | Last modified: | 2014-09-15 21:35:16 |
| Access level: | the public | Released: | 2014-09-15 21:35:16 |
| Creative Commons license: | CC BY |
Reference information
Primary reference:
| 52739. | B. J. Welton. 2013. A new archaic basking shark (Lamniformes, Cetorhinidae) from the Late Eocene of Western Oregon, USA, and description of the dentition, gill rakers and vertebrae of the recent basking shark Cetorhinus Maximus (Gunnerus). New Mexico Museum of Natural History and Science Bulletin 58:1-48 [A. Hendy/A. Hendy/M. Uhen] |
Secondary references:
| 32147 | B. J. Welton. 1972. Fossil sharks in Oregon. The Ore Bin 34(10):161-170 [M. Uhen/M. Uhen/M. Uhen] |