Woodring Loc. 32a - Timms Point [Timms Point Silt] (Pleistocene of the United States)

Also known as USGS 12203; W4-30

Where: Los Angeles County, California (33.7° N, 118.3° W: paleocoordinates 33.7° N, 118.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Timms Point Silt Formation, Middle Pleistocene (0.8 - 0.1 Ma)

• LITHOSTRATIGRAPHY: From the Timms Point Silt, which is locally overlain by the San Pedro Sand; it is possible that this is infact from the San Pedro Sand. AGE: Lower Pleistocene in Woodring et al. (1946) and Valentine PhD, but is now regarded as Middle Pleistocene [A. Hendy]. STRATIGRAPHIC POSITION: From Unit 1 (?) of Timms Point Silt.

• bed-level stratigraphic resolution

Environment/lithology: offshore; poorly lithified siltstone

• ENVIRONMENT: Typically containing a offshore shelf fauna.
• SPECIFIC LITHOLOGY: Not listed, but generally a poorly consolidated silt. LITHIFICATION: Not stated, but typically poorly lithified.

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 223308: authorized by Austin Hendy, entered by Austin Hendy on 08.11.2021

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Limited to molluscs listed or figured in text. NOMENCLATURE: Updated to 1960s era, so somewhat antiquated but standardized and typically resolved to species resolution.
Gastropoda
 Seguenzioidea - Eucyclidae
Turcica caffea Gabb 1865 snail
Bivalvia
 Pectinida - Pectinoidae
Chlamys jordani Arnold 1903 scallop
AS: Chlamys islandicus jordani
 Thraciida - Thraciidae
"Thracia trapezoides" = Thracia (Homoeodesma) trapezoides
"Thracia trapezoides" = Thracia (Homoeodesma) trapezoides Conrad 1849 clam
 Cardiida - Veneridae
Humilaria perlaminosa Conrad 1855 venus clam
 Cardiida - Cardiidae
"Nemocardium centifilosum" = Nemocardium (Keenaea) centifilosum
"Nemocardium centifilosum" = Nemocardium (Keenaea) centifilosum Carpenter 1864 cockle
 Solemyida - Manzanellidae
"Cyrilla munita" = Huxleyia munita
"Cyrilla munita" = Huxleyia munita Dall 1898 clam
 Nuculida - Nuculidae
Nucula sp. Lamarck 1799 nut clam