Also known as Vedder & Norris (1963) SN-4
Where: Ventura County, California (33.2° N, 119.6° 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 37946: authorized by Austin Hendy, entered by Austin Hendy on 27.03.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
Polyplacophora | |
"Cryptochiton" stelleri Middendorf 1847 chiton | |
Gastropoda | |
Crepipatella lingulata Gould 1846 slipper shell | |
"Triphora cf. pedroana" = Monophorus pedroanus
"Triphora cf. pedroana" = Monophorus pedroanus Bartsch 1907 snail | |
Seila montereyensis Bartsch 1907 snail | |
"Littorina cf. scutulata" = Littorina (Littorina) scutulata, "Littorina cf. planaxis" = Littorina (Neritrema) keenae, "Lacuna unifasciata" = Lacuna (Epheria) unifasciata
"Littorina cf. scutulata" = Littorina (Littorina) scutulata Gould 1849 periwinkle
"Littorina cf. planaxis" = Littorina (Neritrema) keenae Rosewater 1978 periwinkle
"Lacuna unifasciata" = Lacuna (Epheria) unifasciata Carpenter 1857 periwinkle | |
Barleeia cf. subtenuis Carpenter 1864 snail | |
"Olivella biplicata" = Callianax biplicata
"Olivella biplicata" = Callianax biplicata Sowerby 1825 olive snail | |
"Mitra idae" = Mitra (Atrimitra) idae
"Mitra idae" = Mitra (Atrimitra) idae Melville 1893 mitre shell | |
Amphissa cf. versicolor Dall 1871 snail | |
? Maxwellia cf. gemma, "Ocenebra cf. lurida" = Paciocinebrina lurida
? Maxwellia cf. gemma Sowerby 1879 murex snail
"Ocenebra cf. lurida" = Paciocinebrina lurida Middendorff 1848 murex snail | |
"Conus californicus" = Californiconus californicus
"Conus californicus" = Californiconus californicus Reeve 1844 cone shell | |
Antisabia panamensis Adams 1852 hoof shell | |
Caecum cf. californicum, "Fartulum ? occidentale" = Fartulum dextroversum
Caecum cf. californicum Dall 1885 snail
"Fartulum ? occidentale" = Fartulum dextroversum Carpenter 1857 snail | |
"Bittium ? armillatum" = Lirobittium armillatum
"Bittium ? armillatum" = Lirobittium armillatum Carpenter 1864 snail | |
Fissurella volcano Reeve 1849 snail
Diodora ? aspera Rathke 1833 snail | |
Haliotis cf. cracherodii Leach 1814 abalone | |
Lottia gigantea Sowerby 1834 limpet
"Acmaea scabra" = Lottia scabra Gould 1846 limpet
Acmaea mitra Eschscholtz 1833 limpet | |
Bivalvia | |
Cumingia californica Conrad 1837 clam | |
Epilucina californica Conrad 1837 clam | |
"Glans subquadrata" = Glans carpenteri
"Glans subquadrata" = Glans carpenteri Lamy 1922 clam | |
Mytilus californianus Conrad 1837 mussel | |
"Hinnites giganteus" = Crassadoma gigantea
"Hinnites giganteus" = Crassadoma gigantea Gray 1825 scallop | |
Anthozoa | |
Balanophyllia elegans Verrill 1864 stony coral |