Big Bend Quadrangle, Modin Formation, L.S.J.U. 2976 (Triassic of the United States)

Where: Shasta County, California (41.3° N, 122.3° W: paleocoordinates 21.4° N, 58.5° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Kosk Member (Modin Formation), Rhaetian (208.5 - 201.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: deep-water; 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 38334: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 20.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ceratitida - Choristoceratidae
Choristoceras marshi Hauer 1865 ceratite