Where: Washington (46.9° N, 123.3° W: paleocoordinates 46.5° N, 113.6° W)

When: Oligocene (33.9 - 23.0 Ma)

Environment/lithology: marine; sandstone and shale

Size classes: macrofossils, mesofossils

• 3 specimens (M. triangulum); {three specimens of the left manus, two having the propodal finger attached but lacking the tip. The specimen without finger (paratype a) is separate from the matrix and shows inner and outer surfaces, the others show only the outer surface. The larger of these is considered the holotype, the smaller appears to be a minor chela (paratype b)}, [N. porterensis];

Collection methods: 2 specimens (P. vulgaris), Stanford University (N. Pac. 53); holotype in Stanford University (N. porterensis);

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 139447: authorized by Carrie Schweitzer, entered by Samantha Yost on 12.02.2013

Creative Commons license: CC BY (attribution)