UCMP loc. A-3404, Lucas Canyon, a branch of San Juan Canyon (Cretaceous of the United States)

Where: Orange County, California (33.6° N, 117.5° W: paleocoordinates 39.2° N, 87.7° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Holz Shale Member (Ladd Formation), Early/Lower Campanian (83.5 - 70.6 Ma)

• The fossiliferous upper part of the member is dominated by sandstone beds deposited in a deepshelf environment (Squires and Saul, 2001).

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; poorly lithified shale

• The fossiliferous upper part of the member is dominated by sandstone beds deposited in a deep shelf environment (Squires and Saul, 2001).

Size class: macrofossils

Collected by Nomland, Gestek, & Carlso in 1916; reposited in the UCMP

Collection methods: surface (in situ),

Primary reference: L. T. Groves. 2004. New species of Late Cretaceous Cypraeidae (Gastropoda) from California and British Columbia and new records from the Pacific slope. The Nautilus 118(1):43-51 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 176369: authorized by Pete Wagner, entered by Pete Wagner on 09.02.2016, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda, other taxa may be present. NOMENCLATURE: Authoritative publication, modern nomenclature, with species-level identifications.
Gastropoda
 Sorbeoconcha - Cypraeidae
Bernaya (Protocypraea) popenoei n. sp. Groves 2004 cowry
Cephalopoda
 Ammonitida - Baculitidae
Baculites cf. inornatus Meek 1862 ammonite