Woodring Loc. 93 - Hilltop Quarry, San Pedro [Quaternary terrace] (Pleistocene of the United States)

Also known as USGS 12133; W11-30

Where: Los Angeles County, California (33.8° N, 118.3° W: paleocoordinates 33.8° N, 118.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: 3rd terrace Member (Quaternary terrace Formation), Late/Upper Pleistocene (0.1 - 0.0 Ma)

• LITHOSTRATIGRAPHY: From the marine terraces older than the Palos Verdes Sand of Woodring et al. (1946). AGE: Lower Pleistocene in Woodring et al. (1946) and Valentine PhD [likely late Pleistocene, A. Hendy]. STRATIGRAPHIC POSITION: Third terrace.

• bed-level stratigraphic resolution

Environment/lithology: shoreface; unlithified, conglomeratic sandstone

• ENVIRONMENT: Typically containing a shoreface fauna.
• SPECIFIC LITHOLOGY: Not listed, but generally a unconsolidated conglomeratic sand. LITHIFICATION: Not stated, but typically unlithified.

Size classes: macrofossils, mesofossils

Preservation: original aragonite, original calcite

Collected by W. Woodring in 1930; reposited in the USGS, USNM

Collection methods: surface (float), surface (in situ)

• COLLECTOR: W. Woodring, 1930. REPOSITORY: USGS, now Smithsonian.

Primary reference: W. P. Woodring, M. N. Bramlette, and W. S. W. Kew. 1946. Geology and Paleontology of Palos Verdes Hills, California. US Geological Survey Professional Paper 207:1-145 [M. Uhen/M. Shalap/M. Uhen]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 223066: authorized by Austin Hendy, entered by Austin Hendy on 03.11.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to listed molluscs (not a complete list). NOMENCLATURE: Updated to 1960s era, so somewhat antiquated but standardized and typically resolved to species resolution.
Gastropoda
 Sorbeoconcha - Naticidae
 Cerithioidea - Turritellidae
Turritella cooperi Carpenter 1864 turret shell
 Sorbeoconcha - Bursidae
"Bursa californica" = Crossata ventricosa
"Bursa californica" = Crossata ventricosa Broderip 1833 frog shell
 Neogastropoda - Cancellariidae
""Cancellaria" tritonidea" = Euclia tritonidea
""Cancellaria" tritonidea" = Euclia tritonidea Gabb 1866 snail