Also known as LACMIP loc. 10846

Where: Butte County, California (39.9° N, 121.7° W)

• Paleocoordinates: 48.1° N, 81.0° W (Wright 2013)

• coordinate stated in text

• outcrop-level geographic resolution

When: Ponderosa Way Member (Chico Formation), Late/Upper Coniacian to Late/Upper Coniacian (89.3 - 83.5 Ma)

• Chico Formation, top of Ponderosa Way Member. Late Coniacian or early Santonian.

Environment/lithology: coastal; lithified, massive, medium-grained sandstone

Size class: macrofossils

Preservation: mold/impression

Collected by W. P. Popenoe and D. W. Scharf in August. 1931; reposited in the LACM

Collection methods: surface (in situ),

Primary reference: T. Matsumoto. 1960. Upper Cretaceous ammonites of California. Part III. Memoirs of the Faculty of Science, Kyushu University Series D, Geology, Special Volume II 1-204 [A. Hendy/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 119459: authorized by Martin Aberhan, entered by Daniel Wellmanns on 27.10.2011, edited by Jonathan Marcot

Creative Commons license: CC0 (CC0)