USGS Mesozoic loc. 1091, half mile east of Wilcox Ranchhouse (Cretaceous of the United States)

Also known as USGS Mesozoic loc. 2266, USGS Mesozoic loc. M1579

Where: Tehama County, California (40.0° N, 122.5° W: paleocoordinates 38.0° N, 71.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Buchia keyserlingi zone, Valanginian (139.8 - 132.9 Ma)

• Valanginian. About 1,550 ft above base of Buchia keyserlingi zone

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by T. W. Stanton, J. S. Diller, and James Storrs in 1893; reposited in the USNM

Collection methods: surface (in situ),

Primary reference: D. L. Jones, E. H. Bailey, and R. W. Imlay. 1969. Structural and stratigraphic significance of the Buchia zones in the Colyear Springs-Paskenta Area, California. United States Geological Survey Professional Paper (647-A)A1-A24 [J. Marcot/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 222101: authorized by Jonathan Marcot, entered by Jonathan Marcot on 09.09.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Ammonitida - Lytoceratidae
Lytoceras aulaeum Anderson 1938 ammonite
 Ammonitida - Polyptychitidae
Homolsomites mutabilis Stanton 1895 ammonite
Neocraspedites giganteus Imlay 1960 ammonite
 Ammonitida - Neocomitidae
Thurmanniceras jenkinsi Anderson 1933 ammonite
Thurmanniceras stippi Anderson 1938 ammonite
Bivalvia
 Pectinida - Buchiidae
Buchia keyserlingi Lahusen 1888 scallop