Big Bend Quadrangle, Potem Formation, L.S.J.U. 2966 (Jurassic of the United States)

Where: Shasta County, California (41.3° N, 122.3° W: paleocoordinates 34.9° N, 61.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: foreshore; fine-grained siliciclastic sediments

Size class: macrofossils

Preservation: mold/impression, original calcite

Primary reference: A. F. Sanborn. 1960. Geology and Paleontology of the southwest quarter of the Big Bend Quadrangle, Shasta County, California. California Division of Mines, Special Report 63 18-26 [M. Aberhan/S. Nurnberg/S. Nurnberg]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 38341: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 20.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Trigoniida - Trigoniidae
Trigonia cf. vcostata clam
Trigonia cf. v-costata