Where: Douglas County, Oregon (44.5° N, 123.1° W: paleocoordinates 46.1° N, 108.2° W)

When: Middle Eocene (47.8 - 37.7 Ma)

Environment/lithology: marine; nodular lithology not reported

Size classes: macrofossils, mesofossils

• One holotype and impression and two paratypes, each represented by the dorsal surface of the carapace in a small nodule (P. insculpta). Also from the same locality a small major chela in a nodule which is referred to this species because the palm is of similar character to that of the nearly related species, M. triangulum; one small specimen with a portion of the carapace exposed, showing posterior and one lateral margin with antero-lateral spine (R. vaderensis); one carapace in nodule, holotype, and impression; fragments of appendages in another nodule (R. washburnei); propodus (palm and finger) of right cheliped, holotype, also 8 additional specimens of the propodus, one of the carpus, and two of the merus (C. umpquaensis);

Preservation: mold/impression, concretion

Collected by Chester W. Washburne, USGS (5455) in 1898; reposited in the USNM

• P. insculpta (Cat. No. 353347); R. vaderensis (Cat. No. 353355); R. washburnei (Cat. No. 353336); C. umpquaensis (Cat. No. 353328);

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 139884: authorized by Carrie Schweitzer, entered by Samantha Yost on 20.02.2013

Creative Commons license: CC BY (attribution)