Big Bend Quadrangle, Potem Formation (Jurassic to of the United States)

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

• coordinate estimated from map

• local area-level geographic resolution

When: Potem Formation, Early/Lower Jurassic to Early/Lower Jurassic (201.3 - 163.5 Ma)

• formation-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 38347: authorized by Martin Aberhan, entered by Sabine Nürnberg on 20.04.2004, edited by Wolfgang Kiessling

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Ostreida - Gryphaeidae
Gryphaea sp. Lamarck 1801 oyster
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
Lingulata
 Lingulida - Disciniidae
Orbiculoidea indet. d'Orbigny 1847
 Lingulida - Lingulidae
Lingula sp. Bruguiére 1797
Anthozoa
 Scleractinia - Astrocoeniidae
"Astrocoenia" sp. Milne-Edwards and Haime 1848 stony coral