UCLA Loc. 3625, Chico Creek (Cretaceous of the United States)

Also known as LACMIP loc. 23625

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

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Musty Buck Member (Chico Formation), Early/Lower Santonian (85.8 - 83.5 Ma)

• LITHOSTRATIGRAPHIC RELATIONS: From the Chico Fm, for which lithostratigraphic relationships are not discussed. AGE: Santonian, on the basis of ammonite biostratigraphy. STRATIGRAPHIC POSITION: From lower part of formation.

• 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

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

Collection methods: surface (in situ),

• COLLECTOR: L.E. & R.B. Saul. REPOSITORY: UCLA (at the time).

Primary reference: L. R. Saul. 1989. California Late Cretaceous donaciform bivalves. The Veliger 32(2):188-208 [J. Marcot/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 207437: authorized by Jonathan Marcot, entered by Jonathan Marcot on 10.01.2020

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.
Bivalvia
 Cardiida - Donacidae
 Cardiida - Tancrediidae
Meekia (Meekia) mygale n. sp.2 Saul and Popenoe 1962 clam
 Cardiida - Mesodesmatidae
Califadesma elafium Saul 1989 clam
 Cardiida - Veneridae
Calva (Egelicalva) taffi3 Anderson 1958 venus clam
 Trigoniida - Steinmanellidae
Yaadia branti1 Saul 1978 clam
Gastropoda
 Pseudomelanoidea - Pseudomelaniidae
Paosia sp.4 Böhm 1895 snail