Llajas Canyon, Simi Valley, Ventura Co. (Eocene of the United States)

Where: Ventura County, California (34.3° N, 118.7° W: paleocoordinates 34.6° N, 105.5° W)

When: Santa Susana Shales Member, Middle Eocene (48.6 - 37.2 Ma)

• Santa Susana Shales, the basal member of the Meganos Group (according to Dr. Bruce L. Clark)

Environment/lithology: marine; shale

Size class: macrofossils

• 2 specimens, one of which is a male (Z. hendersonianus); left palm, inside view (C. cowlitzensis);

Collected by R.P. Stewart in September, 1923

• 2 specimens (Z. hendersonianus), one of which is a male, paratypes. University of California, Loc. 7014.

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 139539: authorized by Carrie Schweitzer, entered by Samantha Yost on 13.02.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Malacostraca
 Decapoda - Callianassidae
Callianassa cowlitzensis Rathbun 1926 decapod
 Decapoda - Zanthopsidae
Zanthopsis hendersonianus Rathbun 1926 crab