Also known as Matsumoto loc. 509B

Where: Fresno County, California (36.2° N, 120.5° W: paleocoordinates 42.3° N, 90.2° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Ragged Valley Shale Formation (Asuncion Group), Late/Upper Campanian (83.5 - 70.6 Ma)

• Str. position: Calcareous nodules in the siltstone of the lower part of Ragged Valley shale

•Age: UpPer Campanian

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, nodular, calcareous siltstone

Size class: macrofossils

Preservation: cast, mold/impression

Collected by M. B. Payne and T. Matsumoto in 1957; reposited in the CAS

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: biostratigraphic analysis

PaleoDB collection 225716: authorized by Jonathan Marcot, entered by Jonathan Marcot on 25.05.2022

Creative Commons license: CC BY (attribution)