USGS Mesozoic loc. 1013, 2570 (Jurassic of the United States)

Where: California (40.8° N, 122.0° W: paleocoordinates 31.9° N, 62.6° W)

• coordinate based on nearby landmark

When: Potem Formation, Bajocian (170.3 - 168.3 Ma)

• Probably Bajocian / Middle Bajocian

Environment/lithology: marine; lithology not reported

Size classes: macrofossils, mesofossils, microfossils

Preservation: cast, mold/impression

Collected by J. Storrs and T.W. Stanton in 1893, 1902

Primary reference: T. P. Poulton. 1979. Jurassic Trigoniid Bivalves from Canada and Western United States of America. Geological Survey of Canada Bulletin 282 [G. Stanley/H. Shepherd/H. Shepherd]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 139296: authorized by George Stanley, entered by Hannah Shepherd on 10.02.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Trigoniida - Myophorelloidae
Vaugonia cf. kobayashii Alencaster 1963 clam
Hypotype USNM 219917, 219918 from USGS 1013
Vaugonia ? yukonensis Poulton 1979 clam
Paratype USNM 219899 from USGS 2570