North bank of Columbia River, 3/4 mi NE of Knappton (Oligocene of the United States)

Where: Pacific County, Washington (46.3° N, 123.8° W: paleocoordinates 45.9° N, 114.1° W)

When: Oligocene (33.9 - 23.0 Ma)

Environment/lithology: marine; lithology not reported

Size class: macrofossils

• Two specimens of major right manus, one with its propodal finger (holotype), both embedded in nodules (C. knapptonensis);

Preservation: concretion

Collection methods: Holotype in California Academy of Sciences (175), C. knapptonensis

Primary reference: M. J. Rathbun. 1926. The Fossil Stalk-Eyed Crustacea of the Pacific Slope of North America. Smithsonian Institution United States National Museum [C. Schweitzer/S. Yost/S. Yost]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 140190: authorized by Carrie Schweitzer, entered by Samantha Yost on 05.03.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Malacostraca
 Decapoda - Callianassidae
Callianassa knapptonensis Rathbun 1926 decapod