Also known as Vedder & Norris (1963) SN-11
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 37939: authorized by Austin Hendy, entered by Austin Hendy on 27.03.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Anthozoa | |
Balanophyllia elegans Verrill 1864 stony coral | |
Echinoidea | |
Strongylocentrotus ? purpuratus Stimpson 1857 sea urchin | |
Bivalvia | |
"Glans subquadrata" = Glans carpenteri
"Glans subquadrata" = Glans carpenteri Lamy 1922 clam | |
"Lasaea cf. cistula" = Lasaea adansoni
"Lasaea cf. cistula" = Lasaea adansoni Gmelin 1791 clam | |
Bernardina bakeri Dall 1910 clam | |
"Transennella tantilla" = Nutricola tantilla, "Ventricolaria fordii" = Globivenus fordii, "Protothaca staminea" = Leukoma staminea, "Irus cf. lamellifer" = Irusella lamellifera
"Transennella tantilla" = Nutricola tantilla Gould 1853 venus clam
"Ventricolaria fordii" = Globivenus fordii Yates 1890 venus clam
"Protothaca staminea" = Leukoma staminea Conrad 1837 venus clam
"Irus cf. lamellifer" = Irusella lamellifera Conrad 1837 venus clam | |
Cumingia californica Conrad 1837 clam | |
Epilucina californica Conrad 1837 clam | |
"Modiolus cf. fornicatus" = Modiolus carpenteri Soot-Ryen 1963 mussel
Mytilus californianus Conrad 1837 mussel
Septifer bifurcatus Conrad 1837 mussel | |
Polyplacophora | |
Callistochiton crassicostatus Pilsbry 1893 chiton | |
"Cryptochiton" stelleri Middendorf 1847 chiton | |
Mopalia cf. muscosa Gould 1846 chiton | |
Gastropoda | |
"Siphonaria" brannani pulmonate | |
"Coleophysis ? harpa" = Acteocina harpa
"Coleophysis ? harpa" = Acteocina harpa Dall 1871 barrel-bubble | |
Crepidula onyx Sowerby 1824 slipper shell
Crepidula adunca Sowerby 1824 slipper shell
Crepipatella lingulata Gould 1846 slipper shell | |
"Bittium attenuatum" = Lirobittium attenuatum, "Bittium armillatum" = Lirobittium armillatum
"Bittium attenuatum" = Lirobittium attenuatum Carpenter 1864 snail
"Bittium armillatum" = Lirobittium armillatum Carpenter 1864 snail | |
Fartulum cf. orcutti Dall in Orcutt 1885 snail
Caecum sp. Fleming 1813 snail
Caecum californicum Dall 1885 snail
"Caecum dalli" = Caecum quadratum Carpenter 1857 snail | |
Vitrinella cf. oldroydi Bartsch 1907 snail | |
Amphithalamus cf. tenuis Bartsch 1911 snail
Amphithalamus inclusus Lozouet 1998 snail
Barleeia cf. oldroydi Bartsch 1920 snail
Barleeia subtenuis Carpenter 1864 snail | |
Alvania almo, Alvania cf. oldroydi, ""Rissoina" aequisculpta" = Alvinia aequisculpta, "Alvania purpurea" = Alvinia purpurea
Alvania almo snail
Alvania cf. oldroydi snail
""Rissoina" aequisculpta" = Alvinia aequisculpta Keep 1887 snail
"Alvania purpurea" = Alvinia purpurea Dall 1871 snail | |
"Pusula californiana" = Pseudopusula californiana
"Pusula californiana" = Pseudopusula californiana Gray 1827 snail | |
"Acanthina cf. lugubris" = Mexacanthina lugubris, "Ocenebra cf. foveolata" = Paciocinebrina foveolata, "Ocenebra cf. interfossa" = Paciocinebrina interfossa, "Acanthina cf. punctulata" = Acanthinucella punctulata
"Acanthina cf. lugubris" = Mexacanthina lugubris Sowerby I 1822 murex snail
"Ocenebra cf. foveolata" = Paciocinebrina foveolata Hinds 1844 murex snail
"Ocenebra cf. interfossa" = Paciocinebrina interfossa Carpenter 1864 murex snail
"Acanthina cf. punctulata" = Acanthinucella punctulata Sowerby I 1835 murex snail | |
Macron cf. lividus Adams 1855 snail | |
"Barbarofusus ? arnoldi" = Harfordia arnoldi
"Barbarofusus ? arnoldi" = Harfordia arnoldi Cossmann 1903 snail | |
"Conus californicus" = Californiconus californicus
"Conus californicus" = Californiconus californicus Reeve 1844 cone shell | |
? Cytharella sp., "Mangelia cf. variegata" = Tenaturris variegata, "Mangelia cf. nitens" = Cythara (Mangelia), "Mangelia ? interfossa" = Perimangelia interfossa
? Cytharella sp. Monterosato 1875 snail
"Mangelia cf. variegata" = Tenaturris variegata Carpenter 1864 snail
"Mangelia cf. nitens" = Cythara (Mangelia) snail
"Mangelia ? interfossa" = Perimangelia interfossa Carpenter 1864 snail | |
"Mitra idae" = Mitra (Atrimitra) idae
"Mitra idae" = Mitra (Atrimitra) idae Melville 1893 mitre shell | |
"Olivella biplicata" = Callianax biplicata
"Olivella biplicata" = Callianax biplicata Sowerby 1825 olive snail | |
"Mitromorpha cf. gracilior" = Cymakra gracilior
"Mitromorpha cf. gracilior" = Cymakra gracilior Tryon 1884 snail | |
Amphissa versicolor, Mitrella cf. tuberosa, Calicantharus fortis, "Littorina cf. scutulata" = Littorina (Littorina) scutulata, "Littorina planaxis" = Littorina (Neritrema) keenae, "Lacuna unifasciata" = Lacuna (Epheria) unifasciata
Amphissa versicolor Dall 1871 true whelk
Mitrella cf. tuberosa Carpenter 1864 true whelk
Calicantharus fortis Carpenter 1866 true whelk
"Littorina cf. scutulata" = Littorina (Littorina) scutulata Gould 1849 periwinkle
"Littorina planaxis" = Littorina (Neritrema) keenae Rosewater 1978 periwinkle
"Lacuna unifasciata" = Lacuna (Epheria) unifasciata Carpenter 1857 periwinkle | |
"Spiroglyphus lituellus" = Dendropoma lituella, Petaloconchus complicatus
"Spiroglyphus lituellus" = Dendropoma lituella Morch 1861 snail
Petaloconchus complicatus Dall 1908 snail | |
Antisabia panamensis Adams 1852 hoof shell
"Balcis thersites" = Melanella thersites Carpenter 1864 snail
Cerithiopsis sp. Hanley 1849 snail | |
Diodora aspera, Fissurella volcano, Puncturella cf. cooperi, "Megatebennus bimaculatus" = Fissurellidea bimaculata
Diodora aspera Rathke 1833 snail
Fissurella volcano Reeve 1849 snail
Puncturella cf. cooperi Carpenter 1864 puncturella
"Megatebennus bimaculatus" = Fissurellidea bimaculata Dall 1871 snail | |
Haliotis cf. cracherodii Leach 1814 abalone
Haliotis ? rufescens Swainson 1822 abalone | |
"Homalopoma carpenteri" = Homalopoma (Homalopoma) luridum, Homalopoma cf. baculum, "Astraea cf. gibberosa" = Pomaulax gibberosa
"Homalopoma carpenteri" = Homalopoma (Homalopoma) luridum Dall 1885 snail
Homalopoma cf. baculum Carpenter 1864 snail
"Astraea cf. gibberosa" = Pomaulax gibberosa Dillwyn 1817 red turban | |
"Tricolia pulloides" = Eulithidium pulloides
"Tricolia pulloides" = Eulithidium pulloides Carpenter 1865 snail | |
"Tegula brunnea" = Chlorostoma brunnea, "Tegula gallina" = Chlorostoma gallina, "Tegula funebralis" = Chlorostoma funebrale, "Pupillaria cf. optabilis" = Lirularia optabilis
"Tegula brunnea" = Chlorostoma brunnea Philippi 1849 top snail
"Tegula funebralis" = Chlorostoma funebrale Adams 1855 top snail
"Pupillaria cf. optabilis" = Lirularia optabilis Carpenter 1864 top snail | |
Acmaea mitra, "Acmaea ? limatula" = Lottia limatula, "Acmaea cf. pelta" = Lottia pelta, "Acmaea digitalis" = Lottia digitalis, "Acmaea scabra" = Lottia scabra, "Acmaea insessa" = Lottia insessa, "Acmaea asmi" = Lottia asmi
Acmaea mitra Eschscholtz 1833 limpet
"Acmaea ? limatula" = Lottia limatula Carpenter 1864 limpet
"Acmaea cf. pelta" = Lottia pelta Eschscholtz 1833 limpet
"Acmaea digitalis" = Lottia digitalis Eschscholtz 1833 limpet
"Acmaea scabra" = Lottia scabra Gould 1846 limpet
"Acmaea insessa" = Lottia insessa Hinds 1842 limpet
"Acmaea asmi" = Lottia asmi Middendorff 1847 limpet | |
Odostomia aff. americana snail | |
Trimusculus reticulatus Sowerby 1835 button snail | |
Thecostraca | |
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