Also known as Vedder & Norris (1963) SN-2
Where: Ventura County, California (33.2° N, 119.5° 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: taxonomic analysis
PaleoDB collection 37948: authorized by Austin Hendy, entered by Austin Hendy on 27.03.2004
Creative Commons license: CC0 (CC0)
Taxonomic list
Mammalia | |
Ateles squamigerus monkey | |
Anthozoa | |
Balanophyllia elegans Verrill 1864 stony coral | |
Bivalvia | |
"Glycymeris subobsoleta" = Glycymeris septentrionalis
"Glycymeris subobsoleta" = Glycymeris septentrionalis Middendorf 1849 clam | |
"Hinnites giganteus" = Crassadoma gigantea, "Chlamys hastatus" = Chlamys hastata
"Hinnites giganteus" = Crassadoma gigantea Gray 1825 scallop
"Chlamys hastatus" = Chlamys hastata Sowerby 1842 scallop | |
Mytilus californianus Conrad 1837 mussel | |
"Trachycardium ? quadragenarium" = Dallocardia quadragenarium
"Trachycardium ? quadragenarium" = Dallocardia quadragenarium Conrad 1837 cockle | |
Cumingia californica Conrad 1837 clam | |
"Gari cf. californica" = Gari (Gobraeus) californica
"Gari cf. californica" = Gari (Gobraeus) californica Conrad 1849 clam | |
| |
"Protothaca cf. staminea" = Leukoma staminea, "Irus lamellifer" = Irusella lamellifera, Humilaria cf. perlaminosa, Saxidomus nuttalli, "Transennella tantilla" = Nutricola tantilla, "Petricola carditoides" = Petricola (Petricola) carditoides
"Protothaca cf. staminea" = Leukoma staminea Conrad 1837 venus clam
"Irus lamellifer" = Irusella lamellifera Conrad 1837 venus clam
Humilaria cf. perlaminosa Conrad 1855 venus clam
Saxidomus nuttalli Conrad 1837 venus clam
"Transennella tantilla" = Nutricola tantilla Gould 1853 venus clam
"Petricola carditoides" = Petricola (Petricola) carditoides Conrad 1837 venus clam | |
"Lasaea cf. cistula" = Lasaea adansoni, "Kellia laperousii" = Kellia suborbicularis
"Lasaea cf. cistula" = Lasaea adansoni Gmelin 1791 kelly clam
"Kellia laperousii" = Kellia suborbicularis Montague 1803 kelly clam | |
Penitella ? penita Conrad 1837 clam | |
"Thracia curta" = Thracia (Ixartia) curta
"Thracia curta" = Thracia (Ixartia) curta Conrad 1837 clam | |
Epilucina californica Conrad 1837 clam | |
"Glans subquadrata" = Glans carpenteri
"Glans subquadrata" = Glans carpenteri Lamy 1922 clam | |
Gastropoda | |
Crepidula onyx Sowerby 1824 slipper shell
Crepidula adunca Sowerby 1824 slipper shell | |
"Bittium eschrichtii" = Neostylidium eschrichtii
"Bittium eschrichtii" = Neostylidium eschrichtii Middendorff 1849 cerith snail Subspecies: Bittium eschrichtii montereyense
| |
"Searlesia" dira Reeve 1846 true whelk | |
Calicantharus fortis Carpenter 1866 snail | |
"Mitrella carinata" = Alia carinata, Amphissa ? versicolor
"Mitrella carinata" = Alia carinata Hinds 1844 dovesnail
Amphissa ? versicolor Dall 1871 snail | |
Ceratostoma cf. foliatum, "Ocenebra cf. interfossa" = Paciocinebrina interfossa, "Ocenebra cf. lurida" = Paciocinebrina lurida
Ceratostoma cf. foliatum Gmelin 1791 murex snail
"Ocenebra cf. interfossa" = Paciocinebrina interfossa Carpenter 1864 murex snail
"Ocenebra cf. lurida" = Paciocinebrina lurida Middendorff 1848 murex snail | |
"Gibberulina pyriformis" = Granulina margaritula
"Gibberulina pyriformis" = Granulina margaritula Carpenter 1857 snail | |
"Mitra idae" = Mitra (Atrimitra) idae
"Mitra idae" = Mitra (Atrimitra) idae Melville 1893 mitre shell | |
Ophiodermella ophioderma turrid | |
"Mitromorpha cf. filosa" = Mitromorpha carpenteri
"Mitromorpha cf. filosa" = Mitromorpha carpenteri Glibert 1954 snail | |
"Conus cf. californicus" = Californiconus californicus
"Conus cf. californicus" = Californiconus californicus Reeve 1844 cone shell | |
"Olivella biplicata" = Callianax biplicata
"Olivella biplicata" = Callianax biplicata Sowerby 1825 olive snail | |
"Littorina planaxis" = Littorina (Neritrema) keenae, "Lacuna ? unifasciata" = Lacuna (Epheria) unifasciata, "Lacuna cf. carinata" = Lacuna (Epheria) carinata
"Littorina planaxis" = Littorina (Neritrema) keenae Rosewater 1978 periwinkle
"Lacuna ? unifasciata" = Lacuna (Epheria) unifasciata Carpenter 1857 periwinkle
"Lacuna cf. carinata" = Lacuna (Epheria) carinata Gould 1848 periwinkle | |
Petaloconchus anellum worm shell
Petaloconchus complicatus Dall 1908 worm shell
"Spiroglyphus lituellus" = Dendropoma lituella Morch 1861 worm shell | |
"Caecum dalli" = Caecum quadratum, Caecum californicum
"Caecum dalli" = Caecum quadratum Carpenter 1857 snail
Caecum californicum Dall 1885 snail | |
Vitrinella cf. oldroydi Bartsch 1907 snail | |
Elachisina grippi snail | |
| |
""Rissoina" aequisculpta" = Alvinia aequisculpta, "Rissoina aff. dalli" = Zebina dalli, Rissoina cf. hannai, "Alvania cf. acutelirata" = Actonia compacta
""Rissoina" aequisculpta" = Alvinia aequisculpta Keep 1887 snail
"Rissoina aff. dalli" = Zebina dalli Bartsch 1915 snail
Rissoina cf. hannai snail
"Alvania cf. acutelirata" = Actonia compacta Carpenter 1864 snail | |
""Diala" marmorea" = Pseudodiala acuta Carpenter 1864 snail
Barleeia cf. oldroydi Bartsch 1920 snail
Barleeia cf. subtenuis Carpenter 1864 snail | |
"Bittium ? armillatum" = Lirobittium armillatum
"Bittium ? armillatum" = Lirobittium armillatum Carpenter 1864 snail | |
"Balcis cf. prefalcata" = Vitreolina macra
"Balcis cf. prefalcata" = Vitreolina macra Bartsch 1917 snail | |
"Acmaea scabra" = Lottia scabra, "Acmaea scutum" = Lottia scutum, "Acmaea digitalis" = Lottia digitalis, Acmaea sp. n. sp., Acmaea mitra
"Acmaea scabra" = Lottia scabra Gould 1846 limpet
"Acmaea scutum" = Lottia scutum Eschscholtz 1833 limpet
"Acmaea digitalis" = Lottia digitalis Eschscholtz 1833 limpet
Acmaea sp. n. sp. Eschscholtz 1830 limpet
Acmaea mitra Eschscholtz 1833 limpet | |
"Daphnella cf. fuscoligata" = Clathromangelia fuscoligata
"Daphnella cf. fuscoligata" = Clathromangelia fuscoligata Dall 1871 snail | |
Trimusculus reticulatus Sowerby 1835 button snail | |
"Tricolia cf. pulloides" = Eulithidium pulloides
"Tricolia cf. pulloides" = Eulithidium pulloides Carpenter 1865 snail | |
"Astraea gibberosa" = Pomaulax gibberosa, "Homalopoma cf. carpenteri" = Homalopoma (Homalopoma) luridum
"Astraea gibberosa" = Pomaulax gibberosa Dillwyn 1817 red turban
"Homalopoma cf. carpenteri" = Homalopoma (Homalopoma) luridum Dall 1885 snail | |
"Pupillaria cf. parcipicta" = Lirularia parcipicta, "Pupillaria cf. optabilis" = Lirularia optabilis, "Tegula brunnea" = Chlorostoma brunnea, "Tegula funebralis" = Chlorostoma funebrale
"Pupillaria cf. parcipicta" = Lirularia parcipicta Carpenter 1864 top snail
"Pupillaria cf. optabilis" = Lirularia optabilis Carpenter 1864 top snail
"Tegula brunnea" = Chlorostoma brunnea Philippi 1849 top snail
"Tegula funebralis" = Chlorostoma funebrale Adams 1855 top snail | |
Diodora aspera Rathke 1833 snail | |
Haliotis cracherodii Leach 1814 abalone
Haliotis cf. rufescens Swainson 1822 abalone | |
Polyplacophora | |
Mopalia cf. muscosa Gould 1846 chiton | |
Thecostraca | |
Balanus nubilis barnacle | |
Echinoidea | |
Strongylocentrotus cf. franciscanus Agassiz 1863 sea urchin |