Where: Shasta County, California (41.3° N, 122.3° W: paleocoordinates 30.0° N, 57.5° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Potem Formation, Early/Lower Jurassic to Early/Lower Jurassic (201.4 - 161.5 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 38338: authorized by Martin Aberhan, entered by Sabine Nürnberg on 20.04.2004

Creative Commons license: CC BY (attribution)