5 1/2 mi SE of Santa Rosa (Pliocene to of the United States)

Also known as three-tenths mile upstream from bridge crossing Matanzas Creek on left bank, four-tenths mile north of Grangers Hall

Where: Sonoma County, California (38.4° N, 122.6° W: paleocoordinates 38.4° N, 121.6° W)

When: Pliocene to Pliocene (5.3 - 0.0 Ma)

• "Pliocene (?) series" - as quoted from reference.

Environment/lithology: marine; lithology not reported

Size classes: macrofossils, mesofossils

• One specimen showing an impression of a part of sternum and male abdomen, also impression of a palm which may not belong to the same individual, (Hemigrapsus sp.); one specimen, holotype, extending from the hind part of the thorax to the sixth abdominal segment, inclusive: holotype, last 4 abdominal segments (3-6), same specimen shows portion of carapace, thoracic (5-8) and first two abdominal (1,2) segments (C. sonomana);

Preservation: mold/impression

Collected by R. Miller in August, 1923

• Holotype in University of California, (C. sonomana);

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 138983: authorized by Carrie Schweitzer, entered by Samantha Yost on 06.02.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

 Stomatopoda -
Chloridella sonomana Rathbun 1926 mantis shrimp
 Decapoda - Varunidae
Hemigrapsus sp. Dana 1851 crab