Where: Merced County, California (36.1° N, 120.4° W: paleocoordinates 42.1° N, 89.5° W)

When: Campanian (83.6 - 72.1 Ma)

• Str. position: No reliable record; shale unit in the southern part of the Alcalde Hills

•Age: Campanian

Environment/lithology: marine; shale

Size class: macrofossils

Collected by S. W. Muller and Owen Marsh; 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: taxonomic analysis

PaleoDB collection 225647: authorized by Jonathan Marcot, entered by Jonathan Marcot on 22.05.2022

Creative Commons license: CC BY (attribution)