East branch of Redwood Creek (Oligocene of the United States)

Where: Yakutat County, Alaska (60.2° N, 144.4° W: paleocoordinates 60.8° N, 135.4° W)

When: Oligocene (33.9 - 23.0 Ma)

Environment/lithology: marine; lithology not reported

Size classes: macrofossils, mesofossils

• 12 specimens including 2 males and 3 females, one specimen embedded in nodule is selected as holotype (M. alaskensis);

Preservation: concretion

Collection methods: University of California (No. 3866)

Primary reference: M. J. Rathbun. 1926. The Fossil Stalk-Eyed Crustacea of the Pacific Slope of North America. United States National Museum Bulletin 138:1-155 [C. Schweitzer/S. Yost/M. Uhen]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 139886: authorized by Carrie Schweitzer, entered by Samantha Yost on 20.02.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Malacostraca
 Decapoda - Portunidae
Megokkos alaskensis Rathbun 1926 swimming crab