Middle Fork Satsop River, Oligocene (Oligocene of the United States)

Also known as NMNH 9522

Where: Mason County, Washington (47.3° N, 123.5° W: paleocoordinates 47.0° N, 114.5° W)

• coordinate stated in text

• small collection-level geographic resolution

When: middle Member (Lincoln Creek Formation), Chattian (28.1 - 23.0 Ma)

• late Oligocene

Environment/lithology: deep-water; mudstone

• methane-seep carbonate deposit
• mud and siltstone

Size class: macrofossils

Primary reference: B. J. Welton and J. L. Goedert. 2016. New fossil species of Somniosus and Rhinoscymnus (Squaliformes: Somniosidae), deep water sharks from Oligocene rocks of Western Washington State, USA. Fossil Record 5:309-326 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 199731: authorized by Mark Uhen, entered by Mark Uhen on 08.02.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Chondrichthyes
 Squaliformes - Somniosidae
Rhinoscymnus viridiadamas
Rhinoscymnus viridiadamas Welton and Goedert 2016 sleeper shark