LACMIP loc. 23639, Chico Creek (Cretaceous of the United States)

Also known as UCLA loc. 3639

Where: Butte County, California (39.8° N, 121.6° W: paleocoordinates 47.0° N, 89.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Ten Mile Member (Chico Formation), Campanian (83.6 - 72.1 Ma)

• STRATIGRAPHIC RELATIONS: From Ten Mile Mbr of Chico Fm. Lithostratigraphy not discussed here, but can be found in Squires and Saul (2003). AGE: Lower Campanian. STRATIGRAPHIC POSITION: From unknown position within Ten Mile Mbr Member.

• bed-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, gray, green sandstone

• ENVIRONMENT: No environmental reported. Presumably shallow-water siliciclastic marine.
• SPECIFIC LITHOLOGY: Massive, greenish-grey sandstone. LITHIFICATION: Poorly-lithified, based on figured specimens.

Size class: macrofossils

Reposited in the LACM

Collection methods: surface (in situ),

• COLLECTOR: L. R. and R. B. Saul (1952). REPOSITORY: LACMIP.

Primary reference: R. L. Squires and L. R. Saul. 2005. New Late Cretaceous (Santonian and Campanian) gastropods from California and Baja California, Mexico. The Nautilus 119(4):133-148 [A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 69310: authorized by Austin Hendy, entered by Austin Hendy on 24.02.2007, edited by Pete Wagner and Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Only includes some gastropoda. Other mollusca mentioned to be present, but not specified. NOMENCLATURE: Authoritative publication, modern nomenclature, with species-level identifications.
Gastropoda
 Neotaenioglossa - Trichotropidae
Paxitropis dicriota Squires and Saul 2005 snail
 Neogastropoda - Melongenidae
Pentzia hilgardi4 White 1889 snail
 Sorbeoconcha - Naticidae
Gyrodes (Sohlella) canadensis1 Whiteaves 1903 moon snail
 Sorbeoconcha - Capulidae
Lysis duplicosta2 Gabb 1864 snail
 Epitonioidea - Epitoniidae
Acirsa epsilon n. sp.5 Squires and Saul 2003 wentletrap
 Cerithioidea - Melanopsidae
Boggsia tenuis3 Gabb 1864 snail