Where: Columbia County, Oregon (46.0° N, 123.3° W: paleocoordinates 46.3° N, 111.0° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Middle Member (Keasey Formation), Priabonian (38.0 - 33.9 Ma)
• 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.
• bed-level stratigraphic resolution
Environment/lithology: deep-water; micaceous, gray siltstone and mudstone
Size class: macrofossils
Collection methods: surface (in situ),
• COLLECTOR: P. Kirkland. REPOSITORY: Northwest Museum of Natural History (NWM), Portland, Oregon.
Primary reference: 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]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 161921: authorized by Austin Hendy, entered by Austin Hendy on 15.09.2014, edited by Mark Uhen
Creative Commons license: CC BY (attribution)
Taxonomic list
Chondrichthyes | |
Squatina sp. Dumeril 1806 angel shark | |
Centrophorus sp. Müller and Henle 1837 gulper shark | |
Odontaspis sp. Agassiz 1838 sand tiger shark | |
Keasius taylori Welton 2013 basking shark | |
Heptranchias sp. Rafinesque 1810 sevengill shark
Notorhynchus sp. Ayres 1855 sevengill shark |