Big Bend Quadrangle, Hosselkus Limestone Formation (Triassic to of the United States)

Where: Shasta County, California (41.3° N, 122.3° W: paleocoordinates 17.6° N, 54.7° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Hosselkus Limestone Formation, Carnian to Carnian (237.0 - 208.5 Ma)

• formation-level stratigraphic resolution

Environment/lithology: open shallow subtidal; limestone

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 38326: authorized by Martin Aberhan, entered by Sabine N├╝rnberg on 20.04.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

 Ostreida - Halobiidae
Halobia austriaca Mojsisovics 1874 oyster
Halobia cf. superba Mojsisovics 1874 oyster
 Ceratitida - Arcestidae
Arcestes cf. shastensis Smith 1927 ceratite
 Ceratitida - Sandlingitidae
Clionites aff. whitneyi Smith 1927 ceratite
 Ceratitida - Tropitidae
"Paratropites americanus" = Gymnotropites americanus
"Paratropites americanus" = Gymnotropites americanus Hyatt and Smith 1905 ceratite