Second St area [Timms Point Silt] (Pleistocene of the United States)

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, and overlies at 2nd St the Lomita Marl. 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

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

• COLLECTOR: Unknown, but likely A. Clark and others REPOSITORY: Unknown, but possibly UCLA [=LACMIP]

Primary reference: A. Clark. 1930. Pliocene beds at Timms Point, San Pedro, California. Geological Society America Bulletin 41(1):210-210 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 223327: 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.
Bivalvia
 Nuculanida - Nuculanidae
 Pectinida - Pectinoidae
unclassified
  -
Gastropoda
 Sorbeoconcha - Procerithiidae
 Trochoidea - Trochidae
"Tegula montereyi" = Chlorostoma montereyi, "Calliostoma doliarium" = Calliostoma canaliculatum
"Tegula montereyi" = Chlorostoma montereyi Kiener 1850 top snail
"Calliostoma doliarium" = Calliostoma canaliculatum Lightfoot 1786 top snail
 Trochoidea - Solariellidae
"Solariella permabilis" = Minolia peramabilis
"Solariella permabilis" = Minolia peramabilis Carpenter 1864 snail
 Epitonioidea - Epitoniidae
Epitonium indianorum Carpenter 1864 wentletrap
 Cerithioidea - Turritellidae
Turritella cooperi Carpenter 1864 turret shell
 Sorbeoconcha - Naticidae
"Neverita reclusiana" = Glossaulax reclusiana, "Natica clausa" = Cryptonatica affinis
"Neverita reclusiana" = Glossaulax reclusiana Deshayes 1839 moon snail
"Natica clausa" = Cryptonatica affinis Gmelin 1791 moon snail
 Neogastropoda - Conidae
"Conus californicus" = Californiconus californicus
"Conus californicus" = Californiconus californicus Reeve 1844 cone shell
 Neogastropoda - Olividae
"Olivella biplicata" = Callianax biplicata
"Olivella biplicata" = Callianax biplicata Sowerby 1825 olive snail
 Neogastropoda - Columbellidae
"Mitrella carinata gausapata" = Mitrella gausapata, Amphissa reticulata
"Mitrella carinata gausapata" = Mitrella gausapata Gould 1850 snail
Amphissa reticulata Dall 1916 snail
 Neogastropoda - Buccinidae
"Neptunea tabulata" = Neptunea (Sulcosipho) tabulata
"Neptunea tabulata" = Neptunea (Sulcosipho) tabulata Baird 1863 true whelk
 Neogastropoda - Fasciolariidae
Barbarofusus barbarensis Trask 1855 snail
 Neogastropoda - Nassariidae
""Nassa" mendicus" = Hima mendica, ""Nassa" perpinguis" = Caesia perpinguis
""Nassa" mendicus" = Hima mendica Gould 1849 snail
""Nassa" perpinguis" = Caesia perpinguis Hinds 1844 snail
 Neogastropoda - Muricidae
Boreotrophon stuarti Smith 1880 murex snail
 Sorbeoconcha - Procerithiidae
"Bittium rugatum" = Lirobittium rugatum
"Bittium rugatum" = Lirobittium rugatum Carpenter 1866 snail
 Opisthobranchia - Cylichnidae
Acteocina culcitella Gould 1853 barrel-bubble
Scaphopoda
 Gadilida - Gadilidae
"Cadulus fusiformis" = Gadila aberrans
"Cadulus fusiformis" = Gadila aberrans Whiteaves 1887 tusk shell
Bivalvia
 Pectinida - Pectinoidae
Chlamys hastata Sowerby 1842 scallop
 Mytilida - Mytilidae
"Modiolus fornicatus" = Modiolus carpenteri
"Modiolus fornicatus" = Modiolus carpenteri Soot-Ryen 1963 mussel
 Carditida - Carditidae
Cyclocardia sp. Conrad 1867 clam
 Pandorida - Pandoridae
Pandora grandis Dall 1877 clam
 Thraciida - Thraciidae
"Thracia trapezoides" = Thracia (Homoeodesma) trapezoides
"Thracia trapezoides" = Thracia (Homoeodesma) trapezoides Conrad 1849 clam
 Hiatellida - Hiatellidae
Panomya ampla, "Panope generosa" = Panopea generosa
Panomya ampla Dall 1898 clam
"Panope generosa" = Panopea generosa Gould 1850 clam
 Solenida - Solenidae
Solen sicarius Gould 1850 clam
 Cardiida - Semelidae
"Semele incongrua" = Semele (Amphidesma) venusta
"Semele incongrua" = Semele (Amphidesma) venusta Reeve 1853 clam
 Cardiida - Tellinidae
"Tellina buttoni" = Ameritella modesta, "Macoma calcarea" = Macoma (Macoma) calcarea
"Tellina buttoni" = Ameritella modesta Carpenter 1864 tellin clam
"Macoma calcarea" = Macoma (Macoma) calcarea Gmelin 1792 tellin clam
 Cardiida - Veneridae
"Psephidia cymata" = Nutricola cymata, "Psephidia ovalis" = Nutricola ovalis
"Psephidia cymata" = Nutricola cymata Dall 1913 venus clam
"Psephidia ovalis" = Nutricola ovalis Dall 1902 venus clam
 Lucinida - Thyasiridae
"Axinopsis viridus" = Axinopsida serricata, "Thyasira gouldi" = Thyasira flexuosa
"Axinopsis viridus" = Axinopsida serricata Carpenter 1864 clam
"Thyasira gouldi" = Thyasira flexuosa Montagu 1803 clam
 Lucinida - Lucinidae
Lucinisca nuttalli Conrad 1837 clam
"Lucinoma annulata" = Lucinoma annulatum Reeve 1850 clam
Parvilucina tenuisculpta Carpenter 1864 clam
 Nuculida - Nuculidae
"Acila castrensis" = Acila (Truncacila) castrensis
"Acila castrensis" = Acila (Truncacila) castrensis Hinds 1843 divaricate nutclam
 Nuculanida - Nuculanidae
"Nuculana taphria" = Saccella taphria
"Nuculana taphria" = Saccella taphria Dall 1896 pointed nut clam