Also known as Matsumoto loc. 1004

Where: Butte County, California (39.9° N, 121.7° W: paleocoordinates 45.1° N, 86.6° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Chico Formation, Santonian (86.3 - 83.6 Ma)

• Str. position: Upper part of lower half of the type Chico formation, about 800 feet above the base

•Age: Santonian

• member-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by T. Matsumoto and Stewart Chuber in 1957; reposited in the CAS

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 225690: authorized by Jonathan Marcot, entered by Jonathan Marcot on 24.05.2022

Creative Commons license: CC BY (attribution)