UCLA Loc. 3623 - Chico Creek [Chico Fm] (Cretaceous of the United States)

Also known as LACMIP Loc. 23623

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), Santonian (86.3 - 83.6 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

Preservation: mold/impression

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: 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 86956: authorized by Austin Hendy, entered by Austin Hendy on 26.02.2009, edited by 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
Bivalvia
 Nuculida - Nuculidae
Acila (Truncacila) demessa5
Acila (Truncacila) demessa5 Finlay 1927 divaricate nutclam
 Trigoniida - Steinmanellidae
Yaadia branti2
Yaadia branti2 Saul 1978 clam
 Cardiida - Mesodesmatidae
Califadesma elafium3
Califadesma elafium3 Saul 1989 clam
 Cardiida - Veneridae
Calva (Egelicalva) taffi4
Calva (Egelicalva) taffi4 Anderson 1958 venus clam
 Cardiida - Donacidae
Adelodonax tectus3
Adelodonax tectus3 Saul 1989 clam
Gastropoda
  -
? Alamirifica harveyi5
? Alamirifica harveyi5 Whiteaves 1903 snail
 Pseudomelanoidea - Pseudomelaniidae
Paosia sp.6
Paosia sp.6 Böhm 1895 snail
 Neogastropoda - Perissityidae
Perissitys elaphia1
Perissitys elaphia1 Popenoe and Saul 1987 snail
Cephalopoda
 Ammonitida - Nostoceratidae
Bostrychoceras aff. otsukai
Bostrychoceras aff. otsukai Yabe 1904 ammonite
 Ammonitida - Baculitidae
Baculites cf. yokoyamai
Baculites cf. yokoyamai Tokunga and Shimizu 1926 ammonite
 Ammonitida - Desmoceratidae
Hauericeras sp., Mesopuzosia cf. densicostata
Hauericeras sp. de Grossouvre 1894 ammonite
Mesopuzosia cf. densicostata Matsumoto 1954 ammonite
1Popenoe and Saul 1987; 2Saul 1978; 3Saul 1989; 4Saul and Popenoe 1992; 5Squires and Saul 2003; 6Squires and Saul 2004