USGS loc. 18424, west of San Martinez Grande Canyon (Pliocene of the United States)
Also known as Winterer and Durham loc. F48; M 210
Where: Los Angeles County, California (34.4° N, 118.7° W)
• Paleocoordinates: 35.0° N, 117.4° W (Wright 2013)
• coordinate estimated from map
When: Pico Formation, Late/Upper Pliocene (3.6 - 2.6 Ma)
Environment/lithology: coastal; lenticular, graded, conglomeratic sandstone
• Several large faunas were collected from lenticular beds of sandstone and conglomerate in the lower part of the Pico formation north of the Santa Clara River.These collections (from loc. F41-48, F50, F51, F59,and F60) come from graded beds or from beds intimately associated with graded beds; the faunas probably were transported to their place of final deposition by turbidity currents or submarine slides.
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 238455: authorized by Jonathan Marcot, entered by Jonathan Marcot on 26.01.2025
Creative Commons license: CC0 (CC0)
Taxonomic list
Show authors, comments, and common names
| Thecostraca | |
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Balanus sp. Da Costa 1778 barnacle | |
| Scaphopoda | |
"Dentalium cf. pretiosum" = Antalis pretiosa
"Dentalium cf. pretiosum" = Antalis pretiosa Nuttall in Sowerby 1860 tusk shell | |
| Gastropoda | |
"Solariella peramabilis" = Minolia peramabilis
"Solariella peramabilis" = Minolia peramabilis Carpenter 1864 snail | |
|
Mitrella cf. tuberosa Carpenter 1864 snail | |
""Nassa" aff. moraniana" = Caesia moraniana
""Nassa" aff. moraniana" = Caesia moraniana Martin 1914 snail | |
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Barbarofusus cf. barbarensis Trask 1855 snail | |
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"Nassa" sp. Röding 1798 true whelk | |
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Boreotrophon cf. stuarti Smith 1880 murex snail | |
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"Cancellaria" hemphilli Dall 1909 snail | |
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Calyptraea filosa Gabb 1866 slipper shell | |
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Bittium sp. Gray 1847 cerith snail | |
"Eulima cf. raymondi" = Strombiformis raymondi
"Eulima cf. raymondi" = Strombiformis raymondi Rivers 1904 snail | |
|
Acteocina cf. culcitella Gould 1853 barrel-bubble | |
| Bivalvia | |
|
Acila (Acila) semirostrata Grant, IV and Gale 1931 divaricate nutclam | |
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? Tindaria sp. Bellardi 1875 clam | |
"Yoldia cf. beringiana" = Yoldia (Megayoldia) montereyensis
"Yoldia cf. beringiana" = Yoldia (Megayoldia) montereyensis Dall 1893 clam | |
"Nuculana cf. hamata" = Nuculana (Nuculana) hamata, Nuculana (Nuculana) cf. extenuata, Saccella taphria
"Nuculana cf. hamata" = Nuculana (Nuculana) hamata Carpenter 1864 pointed nut clam
Nuculana (Nuculana) cf. extenuata Dall 1897 pointed nut clam
Saccella taphria Dall 1896 pointed nut clam | |
|
Anadara cf. trilineata Conrad 1856 ark | |
"Ostrea vespertina" = Dendostrea vespertina
"Ostrea vespertina" = Dendostrea vespertina Conrad 1855 oyster | |
"Chlamys islandicus hindsii" = Chlamys rubida
"Chlamys islandicus hindsii" = Chlamys rubida Hinds 1845 scallop | |
"Lucinoma cf. annulata" = Lucinoma annulatum, Parvilucina tenuisculpta
"Lucinoma cf. annulata" = Lucinoma annulatum Reeve 1850 clam
Parvilucina tenuisculpta Carpenter 1864 clam | |
"Solen cf. perrini" = Solena (Eosolen) perrini
"Solen cf. perrini" = Solena (Eosolen) perrini Clark 1915 clam | |
"Panope generosa" = Panopea generosa
"Panope generosa" = Panopea generosa Gould 1850 clam | |
"Pratulum centifilosum" = Cardium centifilosum
"Pratulum centifilosum" = Cardium centifilosum Carpenter 1864 cockle | |
"Macoma cf. calcarea" = Macoma (Macoma) calcarea
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Compsomyax subdiaphana, "Protothaca cf. staminea" = Leukoma staminea
Compsomyax subdiaphana Carpenter 1864 venus clam
"Protothaca cf. staminea" = Leukoma staminea Conrad 1837 venus clam | |
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Corbula (Varicorbula) gibbiformis Grant, IV and Gale 1931 clam | |