PBDB Collection

USGS loc. 18430, Towsley Canyon (Pliocene of the United States)

Also known as Winterer and Durham loc. F81; M 243

Where: Los Angeles County, California (34.4° N, 118.6° W)

• Paleocoordinates: 34.9° N, 117.3° W (Wright 2013)

• coordinate estimated from map

When: Pico Formation, Late/Upper Pliocene (3.6 - 2.6 Ma)

Environment/lithology: offshore; lenticular, graded, conglomeratic sandstone

• The collections from localities F77 to F81 consist of species that live in water of moderate depths and species that live in water that ranges from shallow to moderate depths.

Size class: macrofossils

Collected by Winterer in 1951; reposited in the USGS

Primary reference: E. L. Winterer and D. L. Durham. 1962. Geology of southeastern Ventura basin, Los Angeles County, California. United States Geological Survey Professional Paper 334-H:275-366more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 238612: authorized by Jonathan Marcot, entered by Jonathan Marcot on 30.01.2025

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names

Thecostraca
Balanomorpha - Balanidae	Balanus sp. Balanus sp. Da Costa 1778 barnacle
Lingulata
Lingulida - Lingulidae	Glottidia cf. albida Glottidia cf. albida Hinds 1844
Gastropoda
Trochoidea - Turbinidae	"Pomaulax gradatus" = Pomaulax gradata "Pomaulax gradatus" = Pomaulax gradata Grant and Gale 1931 snail doubtful occurrence
Heterostropha - Acteonidae	"Acteon aff. grandior" = Rictaxis painei grandior "Acteon aff. grandior" = Rictaxis painei grandior Grant, IV and Gale 1931 snail
Sorbeoconcha - Procerithiidae	"Bittium cf. rugatum" = Lirobittium rugatum "Bittium cf. rugatum" = Lirobittium rugatum Carpenter 1866 snail
Sorbeoconcha - Naticidae	"Neverita reclusiana" = Glossaulax reclusiana "Neverita reclusiana" = Glossaulax reclusiana Deshayes 1839 moon snail doubtful occurrence
Neogastropoda - Terebridae	"Strioterebrum martini" = Terebra (Strioterebrum) martini "Strioterebrum martini" = Terebra (Strioterebrum) martini English 1914 auger snail
Neogastropoda - Siphonaliidae	Calicantharus humerosus Calicantharus humerosus Gabb 1869 snail "intermediate form"
Neogastropoda - Nassariidae	""Nassa" aff. moraniana" = Caesia moraniana ""Nassa" aff. moraniana" = Caesia moraniana Martin 1914 snail
Neogastropoda - Columbellidae	Mitrella cf. tuberosa Mitrella cf. tuberosa Carpenter 1864 snail
Neogastropoda - Fasciolariidae	Barbarofusus cf. barbarensis Barbarofusus cf. barbarensis Trask 1855 snail
Cerithioidea - Turritellidae	Turritella cooperi Turritella cooperi Carpenter 1864 turret shell
Neotaenioglossa - Calyptraeidae	Calyptraea filosa, "Crepidula cf. aculeata" = Bostrycapulus aculeatus, Crepidula cf. onyx Calyptraea filosa Gabb 1866 slipper shell "Crepidula cf. aculeata" = Bostrycapulus aculeatus Gmelin 1791 slipper shell Crepidula cf. onyx Sowerby 1824 slipper shell
Bivalvia
Nuculanida - Sareptidae	"Yoldia beringiana" = Yoldia (Megayoldia) montereyensis "Yoldia beringiana" = Yoldia (Megayoldia) montereyensis Dall 1893 clam doubtful occurrence
Solenida - Solenidae	"Solen cf. perrini" = Solena (Eosolen) perrini "Solen cf. perrini" = Solena (Eosolen) perrini Clark 1915 clam
Hiatellida - Hiatellidae	"Panope generosa" = Panopea generosa "Panope generosa" = Panopea generosa Gould 1850 clam doubtful occurrence
Cardiida - Veneridae	"Macrocallista aff. squalida" = Megapitaria squalida, "Protothaca cf. staminea" = Leukoma staminea, "Protothaca cf. tenerrima" = Callithaca tenerrima, Dosinia ponderosa "Macrocallista aff. squalida" = Megapitaria squalida Sowerby 1833 venus clam "Protothaca cf. staminea" = Leukoma staminea Conrad 1837 venus clam "Protothaca cf. tenerrima" = Callithaca tenerrima Carpenter 1857 venus clam Dosinia ponderosa Gray 1838 venus clam doubtful occurrence
Cardiida - Cardiidae	"Trachycardium quadragenarium" = Dallocardia quadragenarium, "Pratulum centifilosum" = Cardium centifilosum "Trachycardium quadragenarium" = Dallocardia quadragenarium Conrad 1837 cockle "Pratulum centifilosum" = Cardium centifilosum Carpenter 1864 cockle doubtful occurrence
Pectinida - Pectinoidae	Argopecten invalidus Argopecten invalidus Hanna 1924 calico scallop
Ostreida - Ostreidae	Myrakeena veatchii Myrakeena veatchii Gabb 1866 oyster "strongly plicate form"
Scaphopoda
Dentaliida - Dentaliidae	Dentalium neohexagonum Dentalium neohexagonum Sharp and Pilsbry 1897 tusk shell