ammonites
CIT Loc. 1328 - Butte Creek [Chico Fm] (Cretaceous of the United States)

Where: Butte County, California (39.8° N, 121.6° W: paleocoordinates 47.1° N, 90.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Chico Formation, Early/Lower Campanian (83.5 - 70.6 Ma)

• LITHOSTRATIGRAPHIC RELATIONS: From the Chico Fm, for which no lithostratigraphic relationships are discussed. AGE: Early Campanian in text; on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: Not stated in text.

• member-level stratigraphic resolution

Environment/lithology: coastal; lithified siliciclastic sediments

• ENVIRONMENT: Not reported in text, but apparently shallow marine siliciclastic.
• LITHOLOGY: Not stated in text, but apparently siliciclastic. LITHIFICATION: Lithified, on the basis of figured specimens.

Size class: macrofossils

Collected by Church et al in 1938

Collection methods: surface (in situ),

• COLLECTOR: Church, Fiedler, George, & Popenoe, 1938. REPOSITORY: California Institute of Technology (at the time).

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 86790: authorized by Austin Hendy, entered by Austin Hendy on 17.02.2009

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)