Also known as Vedder & Norris (1963) SN-9
Where: Ventura County, California (33.2° N, 119.5° W: paleocoordinates 33.2° N, 119.2° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Unnamed Formation, Quaternary (2.6 - 0.0 Ma)
• Dune sand and fossiliferous marine terrace deposits of Quaternary age. These overlie Eocene strata. Fossils come from seven well-developed wave-cut platforms at altitudes of 25 to 990 feet. Several submerged terraces are present on the shelf adjacent to the island., the lowest being 400 ft below sea-level. Presumably all the terrace platforms on San Nicholas Island were cut later than the middle Pleistocene diastrophism recognized elsewhere in southern California. Terrace platforms are covered with a variety of sediments of marine and non-marine origin and range in thickness from a few inches to many feet.
• bed-level stratigraphic resolution
Environment/lithology: coastal; pebbly, shelly/skeletal, conglomeratic, calcareous sandstone
Size class: macrofossils
Collection methods: quarrying,
• Collections made by Vedder et al (1955-1956). Earlier collections by Cooper (1894), and Howard (1955)
Primary reference: J. G. Vedder and R. M. Norris. 1963. Geology of San Nicolas Island, California. United States Geological Survey Professional Paper 369:1-65 [A. Miller/A. Hendy/P. Wagner]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 37941: authorized by Austin Hendy, entered by Austin Hendy on 27.03.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Echinoidea | |
Strongylocentrotus cf. franciscanus Agassiz 1863 sea urchin | |
Gastropoda | |
Odostomia cf. oldroydi snail | |
"Tegula cf. brunnea" = Chlorostoma brunnea, "Tegula cf. funebralis" = Chlorostoma funebrale
"Tegula cf. brunnea" = Chlorostoma brunnea Philippi 1849 top snail
"Tegula cf. funebralis" = Chlorostoma funebrale Adams 1855 top snail | |
"Homalopoma carpenteri" = Homalopoma (Homalopoma) luridum, "Astraea gibberosa" = Pomaulax gibberosa
"Homalopoma carpenteri" = Homalopoma (Homalopoma) luridum Dall 1885 snail
"Astraea gibberosa" = Pomaulax gibberosa Dillwyn 1817 red turban | |
Acmaea mitra Eschscholtz 1833 limpet
"Acmaea ? pelta" = Lottia pelta Eschscholtz 1833 limpet
"Acmaea cf. scabra" = Lottia scabra Gould 1846 limpet | |
"Bittium eschrichtii" = Neostylidium eschrichtii
"Bittium eschrichtii" = Neostylidium eschrichtii Middendorff 1849 cerith snail Subspecies: Bittium eschrichtii montereyense
| |
Crepidula californicum slipper shell
Crepidula ? adunca Sowerby 1824 slipper shell | |
"Bittium ? armillatum" = Lirobittium armillatum
"Bittium ? armillatum" = Lirobittium armillatum Carpenter 1864 snail | |
| |
"Lacuna ? unifasciata" = Lacuna (Epheria) unifasciata
"Lacuna ? unifasciata" = Lacuna (Epheria) unifasciata Carpenter 1857 periwinkle | |
"Alvania cf. purpurea" = Alvinia purpurea
"Alvania cf. purpurea" = Alvinia purpurea Dall 1871 snail | |
Barleeia cf. oldroydi Bartsch 1920 snail | |
Amphissa cf. versicolor, "Mitrella carinata" = Alia carinata
Amphissa cf. versicolor Dall 1871 snail
"Mitrella carinata" = Alia carinata Hinds 1844 dovesnail | |
"Searlesia" cf. dira Reeve 1846 true whelk | |
Calicantharus cf. fortis Carpenter 1866 snail | |
Pseudomelatoma ? torosa Gabb 1864 snail | |
"Olivella biplicata" = Callianax biplicata
"Olivella biplicata" = Callianax biplicata Sowerby 1825 olive snail | |
"Spiroglyphus cf. lituellus" = Dendropoma lituella
"Spiroglyphus cf. lituellus" = Dendropoma lituella Morch 1861 worm shell | |
"Balcis cf. prefalcata" = Vitreolina macra
"Balcis cf. prefalcata" = Vitreolina macra Bartsch 1917 snail | |
Bivalvia | |
Mytilus cf. californianus Conrad 1837 mussel | |
Cumingia ? californica Conrad 1837 clam | |
| |
"Transennella tantilla" = Nutricola tantilla
"Transennella tantilla" = Nutricola tantilla Gould 1853 venus clam | |
Hiatella ? arctica Linnaeus 1767 clam | |
Parvilucina tenuisculpta Carpenter 1864 clam
Epilucina californica Conrad 1837 clam | |
Thecostraca | |
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