Also known as Vedder & Norris (1963) SN-12
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 37938: authorized by Austin Hendy, entered by Austin Hendy on 27.03.2004
Creative Commons license: CC BY (attribution)
Taxonomic list
unclassified | |
Echinoidea | |
Dendraster cf. excentricus Eschscholz 1826 sand dollar | |
Strongylocentrotus ? purpuratus Stimpson 1857 sea urchin | |
Gastropoda | |
Acmaea mitra, "Acmaea ? limatula" = Lottia limatula, "Acmaea ? insessa" = Lottia insessa, Lottia gigantea, "Acmaea scabra" = Lottia scabra
Acmaea mitra Eschscholtz 1833 limpet
"Acmaea ? limatula" = Lottia limatula Carpenter 1864 limpet
"Acmaea ? insessa" = Lottia insessa Hinds 1842 limpet
Lottia gigantea Sowerby 1834 limpet
"Acmaea scabra" = Lottia scabra Gould 1846 limpet | |
"Astraea cf. gibberosa" = Pomaulax gibberosa
"Astraea cf. gibberosa" = Pomaulax gibberosa Dillwyn 1817 red turban | |
"Tricolia cf. pulloides" = Eulithidium pulloides, Tricolia cf. rubrilineata
"Tricolia cf. pulloides" = Eulithidium pulloides Carpenter 1865 snail | |
""Tegula" cf. montereyi" = Chlorostoma montereyi, "Tegula ? funebralis" = Chlorostoma funebrale, "Tegula brunnea" = Chlorostoma brunnea, "Pupillaria ? optabilis" = Lirularia optabilis
""Tegula" cf. montereyi" = Chlorostoma montereyi Kiener 1850 top snail
"Tegula ? funebralis" = Chlorostoma funebrale Adams 1855 top snail
"Tegula brunnea" = Chlorostoma brunnea Philippi 1849 top snail
"Pupillaria ? optabilis" = Lirularia optabilis Carpenter 1864 top snail | |
Megathura crenulata Sowerby 1825 snail
Fissurella volcano Reeve 1849 snail | |
Haliotis cf. rufescens Swainson 1822 abalone
Haliotis cracherodii Leach 1814 abalone | |
Crepidula adunca Sowerby 1824 slipper shell
Calyptraea cf. mammilaris slipper shell | |
Turritella cooperi Carpenter 1864 turret shell | |
"Alvania ? purpurea" = Alvinia purpurea
"Alvania ? purpurea" = Alvinia purpurea Dall 1871 snail | |
Amphithalamus tenuis Bartsch 1911 snail
Barleeia ? subtenuis Carpenter 1864 snail | |
"Triphora cf. pedroana" = Monophorus pedroanus
"Triphora cf. pedroana" = Monophorus pedroanus Bartsch 1907 snail | |
"Spiroglyphus lituellus" = Dendropoma lituella
"Spiroglyphus lituellus" = Dendropoma lituella Morch 1861 worm shell | |
Hipponix tumens Carpenter 1864 hoof shell | |
"Olivella biplicata" = Callianax biplicata
"Olivella biplicata" = Callianax biplicata Sowerby 1825 olive snail | |
Ocenebra cf. luridus, Ocenebra beta, Ceratostoma nuttalli, "Acanthina spirata" = Acanthinucella spirata, "Jaton cf. festivus" = Pteropurpura festiva
Ocenebra cf. luridus murex snail
Ocenebra beta murex snail
Ceratostoma nuttalli Conrad 1837 murex snail
"Acanthina spirata" = Acanthinucella spirata Blainville 1832 murex snail
"Jaton cf. festivus" = Pteropurpura festiva Hinds 1844 murex snail | |
"Mitra idae" = Mitra (Atrimitra) idae
"Mitra idae" = Mitra (Atrimitra) idae Melville 1893 mitre shell | |
"Barbarofusus ? arnoldi" = Harfordia arnoldi
"Barbarofusus ? arnoldi" = Harfordia arnoldi Cossmann 1903 snail | |
Kelletia ? kelletii Forbes 1852 true whelk | |
"Nassarius cf. perpinguis" = Caesia perpinguis
"Nassarius cf. perpinguis" = Caesia perpinguis Hinds 1844 snail | |
Barbarofusus kobelti Dall 1877 snail | |
Amphissa cf. versicolor Dall 1871 snail
Mitrella ? tuberosa Carpenter 1864 snail
"Mitrella carinata" = Alia carinata Hinds 1844 dovesnail | |
Pseudomelatoma torosa Gabb 1864 snail | |
"Conus californicus" = Californiconus californicus
"Conus californicus" = Californiconus californicus Reeve 1844 cone shell | |
Terebra aff. lucana auger snail | |
"Pusula californiana" = Pseudopusula californiana
"Pusula californiana" = Pseudopusula californiana Gray 1827 snail | |
"Zonaria cf. spadicea" = Neobernaya spadicea
"Zonaria cf. spadicea" = Neobernaya spadicea Swainson 1823 cowry | |
"Bursa californica" = Crossata ventricosa
"Bursa californica" = Crossata ventricosa Broderip 1833 frog shell | |
Vitrinella cf. oldroydi Bartsch 1907 snail | |
Teinostoma supravallatum snail | |
Caecum californicum Dall 1885 snail
"Fartulum occidentale" = Fartulum dextroversum Carpenter 1857 snail
Fartulum cf. orcutti Dall in Orcutt 1885 snail | |
"Lunatia cf. lewisii" = Euspira lewisii
"Lunatia cf. lewisii" = Euspira lewisii Gould 1847 moon snail | |
"Lacuna unifasciata" = Lacuna (Epheria) unifasciata, "Littorina ? scutulata" = Littorina (Littorina) scutulata
"Lacuna unifasciata" = Lacuna (Epheria) unifasciata Carpenter 1857 periwinkle
"Littorina ? scutulata" = Littorina (Littorina) scutulata Gould 1849 periwinkle | |
Odostomia cf. virginalis snail | |
Trimusculus reticulatus Sowerby 1835 button snail | |
Bivalvia | |
"Glans subquadrata" = Glans carpenteri
"Glans subquadrata" = Glans carpenteri Lamy 1922 clam | |
Epilucina californica Conrad 1837 clam | |
"Panope generosa" = Panopea generosa
"Panope generosa" = Panopea generosa Gould 1850 clam | |
Penitella penita Conrad 1837 clam
Parapholas californica Conrad 1837 clam | |
"Irus lamellifer" = Irusella lamellifera, Saxidomus nuttalli, "Transennella tantilla" = Nutricola tantilla
"Irus lamellifer" = Irusella lamellifera Conrad 1837 venus clam
Saxidomus nuttalli Conrad 1837 venus clam
"Transennella tantilla" = Nutricola tantilla Gould 1853 venus clam | |
"Spisula planulata" = Simomactra planulata, "Schizothaerus nuttalli" = Tresus nuttallii
"Spisula planulata" = Simomactra planulata Conrad 1837 clam
"Schizothaerus nuttalli" = Tresus nuttallii Conrad 1837 clam | |
| |
"Trigoniocardia biangulata" = Ctenocardia biangulata, "Trachycardium quadragenarium" = Dallocardia quadragenarium
"Trigoniocardia biangulata" = Ctenocardia biangulata Broderip and Sowerby 1829 cockle
"Trachycardium quadragenarium" = Dallocardia quadragenarium Conrad 1837 cockle | |
Cumingia californica Conrad 1837 clam | |
Septifer bifurcatus Conrad 1837 mussel
Mytilus californianus Conrad 1837 mussel | |
"Glycymeris subobsoleta" = Glycymeris septentrionalis
"Glycymeris subobsoleta" = Glycymeris septentrionalis Middendorf 1849 clam | |
"Anadara ? multicostata" = Larkinia multicostata
"Anadara ? multicostata" = Larkinia multicostata Sowerby 1833 ark | |
Ostrea cf. lurida Carpenter 1864 oyster | |
"Aequipecten cf. circularis" = Argopecten ventricosus, "Pecten vogdesi" = Euvola vogdesi, "Hinnites giganteus" = Crassadoma gigantea
"Aequipecten cf. circularis" = Argopecten ventricosus Sowerby 1842 calico scallop Aequipecten circularis aequisulcatus
"Pecten vogdesi" = Euvola vogdesi Arnold 1906 scallop
"Hinnites giganteus" = Crassadoma gigantea Gray 1825 scallop | |
Thecostraca | |
"Balanus ? tintinnabulum" = Megabalanus tintinnabulum
"Balanus ? tintinnabulum" = Megabalanus tintinnabulum Linnaeus 1758 barnacle Subspecies: Balanus cf. tintinnabulum californicus
| |
Astraea undosa | |
"Astraea cf. undosa" = Megastraea undosa
"Astraea cf. undosa" = Megastraea undosa Wood 1828 |