UCLA 3637, Chico Creek (Cretaceous of the United States)

Also known as LACMIP Loc. 23637

Where: Butte County, California (39.8° N, 121.7° W: paleocoordinates 47.2° N, 90.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• LITHOSTRATIGRAPHIC RELATIONS: From the Chico Fm, for which lithostratigraphic relationships are not discussed. AGE: Campanian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: From unknown position in local section.

• bed-level stratigraphic resolution

Environment/lithology: coastal; lithified siliciclastic sediments

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

Size class: macrofossils

Preservation: mold/impression

Collected by Saul & Saul in 1952; reposited in the LACM

Collection methods: surface (in situ),

• COLLECTOR: L.E. & R.B. Saul, 1952. REPOSITORY: UCLA (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 86939: authorized by Austin Hendy, entered by Austin Hendy on 24.02.2009, edited by Matthew Clapham and Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for Ammonoidea. NOMENCLATURE: From authoritative publication, but comprising somewhat antiquated nomenclature, though with species-resolution identifications.
Show authors, comments, and common names
Gastropoda
 Epitonioidea - Epitoniidae
Claviscala sp.7
Claviscala sp.7 DeBoury 1909 wentletrap
 Sorbeoconcha - Aporrhaidae
Anchura callosa1
Anchura callosa1 Whiteaves 1903 snail
 Neogastropoda - Perissityidae
Perissitys brevirostris2, Forsia baia n. gen. n. sp.4
Perissitys brevirostris2 Gabb 1864 snail
Forsia baia n. gen. n. sp.4 Saul 1988 snail
 Cerithioidea - Melanopsidae
Boggsia tenuis6
Boggsia tenuis6 Gabb 1864 snail
Bivalvia
 Cardiida - Veneridae
Calva (Egelicalva) buttensis5
Calva (Egelicalva) buttensis5 Anderson 1958 venus clam
 Cardiida - Mactridae
Cymbophora suciensis3
Cymbophora suciensis3 Whiteaves 1879 clam
1Elder and Saul 1996; 2Popenoe and Saul 1987; 3Saul 1974; 4Saul 1988; 5Saul and Popenoe 1992; 6Squires and Saul 1997; 7Squires and Saul 2003