San Nicholas Island (SN-1): Quaternary, California
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
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Ateles squamigerus
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Cysticus cf. jewettii
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Cysticus cf. regularis
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Thecostraca
- Balanomorpha
- Tetraclitidae
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Tetraclita squamosa
Bruguière 1789
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Subspecies: Tetraclita squamosa rubescens | ||||||||||
Polyplacophora
- Chitonida
- Callistoplacidae
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Callistochiton crassicostatus
Pilsbry 1893
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Polyplacophora
- Neoloricata
- Ischnochitonidae
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Cyanoplax cf. dentiens
(Gould 1846)
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Stenoplax sp.
Carpenter 1879
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Stenoplax cf. conspicuus
(Carpenter 1879)
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recombined as Ischnochiton (Stenoplax) conspicua | ||||||||||
Lepidozona sp.
Pilsbry 1892
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Lepidozona cf. californiensis
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Tonicella lineata
(Wood 1815)
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Polyplacophora
- Neoloricata
- Acanthochitonidae
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"Cryptochiton" stelleri
(Middendorf 1847)
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Polyplacophora
- Neoloricata
- Mopaliidae
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Mopalia cf. ciliata
(Sowerby 1840)
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Mopalia muscosa
(Gould 1846)
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Dendrochiton cf. thamnopora
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spelled with current rank as Mopalia (Dendrochiton) | ||||||||||
Placiphorella cf. velata
Carpenter 1879
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Gastropoda
- Siphonariidae
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"Siphonaria" brannani
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Gastropoda
- Heterostropha
- Trimusculidae
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Trimusculus reticulatus
(Sowerby 1835)
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recombined as Trimusculus reticulata | ||||||||||
Gastropoda
- Heterostropha
- Pyramidellidae
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Odostomia cf. io
Dall and Bartsch 1909
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Odostomia cf. oldroydi
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Odostomia terricula
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Turbonilla cf. raymondi
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Turbonilla cf. valdezi
(Dall and Bartsch 1907)
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Turbonilla tenuicula
(Gould 1853)
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recombined as Pyrgiscus tenuiculus | ||||||||||
Odostomia cf. eugena
Dall and Bartsch 1909
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recombined as Odostomia (Chrysallida) eugena | ||||||||||
Gastropoda
- Patellida
- Lottiidae
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Acmaea mitra
Eschscholtz 1833
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Acmaea limatula
(Carpenter 1864)
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original and current combination Patella limatula | ||||||||||
Acmaea insessa
(Hinds 1842)
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recombined as Lottia insessa | ||||||||||
Acmaea scabra
(Gould 1846)
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original and current combination Patella (Lottia) scabra | ||||||||||
Acmaea ? pelta
Eschscholtz 1833
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recombined as Lottia pelta | ||||||||||
Acmaea digitalis
Eschscholtz 1833
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recombined as Lottia digitalis | ||||||||||
Acmaea instabilis
(Gould 1846)
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recombined as Lottia instabilis | ||||||||||
Gastropoda
- Eulimidae
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Balcis thersites
(Carpenter 1864)
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recombined as Melanella thersites | ||||||||||
Balcis cf. prefalcata
Bartsch 1917
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synonym of Vitreolina macra | ||||||||||
Gastropoda
- Hipponicidae
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Hipponix tumens
(Carpenter 1864)
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Hipponix antiquatus
(Linnaeus 1767)
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= Antisabia panamensis
Adams 1852
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Hendy 2020 | |||||||||
Gastropoda
- Neogastropoda
- Mitridae
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Mitra idae
Melville 1893
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recombined as Mitra (Atrimitra) idae | ||||||||||
Gastropoda
- Neogastropoda
- Olividae
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Olivella cf. pedroana
(Conrad 1855)
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recombined as Callianax pedroana | ||||||||||
Olivella biplicata
(Sowerby 1825)
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recombined as Callianax biplicata | ||||||||||
Gastropoda
- Neogastropoda
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Mitromorpha cf. gracilior
(Tryon 1884)
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recombined as Cymakra gracilior | ||||||||||
Mitromorpha cf. aspera
(Carpenter 1864)
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recombined as Cymakra aspera | ||||||||||
Gastropoda
- Neogastropoda
- Muricidae
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Acanthina spirata
(Blainville 1832)
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recombined as Acanthinucella spirata | ||||||||||
Subspecies: Acanthina spirata punctulata | ||||||||||
Boreotrophon stuarti
(Smith 1880)
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Ocenebra subangulata
(Stearns 1873)
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recombined as Urosalpinx subangulata | ||||||||||
Ocenebra circumtexta
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Ocenebra cf. beta
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Ocenebra cf. foveolata
(Hinds 1844)
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recombined as Paciocinebrina foveolata | ||||||||||
Ocenebra lurida
(Middendorff 1848)
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recombined as Paciocinebrina lurida | ||||||||||
Subspecies: Ocenebra lurida munda | ||||||||||
Ocenebra interfossa
(Carpenter 1864)
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recombined as Paciocinebrina interfossa | ||||||||||
? Morula cf. lugubris
(Sowerby I 1822)
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recombined as Mexacanthina lugubris | ||||||||||
Gastropoda
- Neogastropoda
- Cystiscidae
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Gibberulina pyriformis
(Carpenter 1864)
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synonym of Granulina margaritula | ||||||||||
Gastropoda
- Neogastropoda
- Mangeliidae
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Mangelia aff. rhyssa
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corrected as Cythara (Mangelia) | ||||||||||
Mangelia cf. variegata
Carpenter 1864
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recombined as Tenaturris variegata | ||||||||||
Mangelia ? interfossa
Carpenter 1864
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recombined as Perimangelia interfossa | ||||||||||
Gastropoda
- Neogastropoda
- Conidae
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Conus californicus
Reeve 1844
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recombined as Californiconus californicus | ||||||||||
Gastropoda
- Neogastropoda
- Pseudomelatomidae
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Pseudomelatoma cf. tororsa
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Gastropoda
- Neogastropoda
- Nassariidae
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Nassarius mendicus
(Gould 1849)
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recombined as Hima mendica | ||||||||||
Subspecies: Nassarius mendicus cooperi | ||||||||||
Gastropoda
- Neogastropoda
- Fasciolariidae
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Barbarofusus monksae
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Barbarofusus cf. kobelti
(Dall 1877)
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Gastropoda
- Neogastropoda
- Columbellidae
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Mitrella tuberosa
(Carpenter 1864)
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Amphissa versicolor
Dall 1871
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Mitrella carinata
(Hinds 1844)
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recombined as Alia carinata | ||||||||||
Gastropoda
- Neogastropoda
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Barbarofusus arnoldi
(Cossmann 1903)
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recombined as Harfordia arnoldi | ||||||||||
Gastropoda
- Triphoridae
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Triphora cf. pedroana
(Bartsch 1907)
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recombined as Monophorus pedroanus | ||||||||||
Gastropoda
- Cerithiopsidae
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Cerithiopsis sp.
Hanley 1849
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Gastropoda
- Caecidae
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Fartulum orcutti
(Dall in Orcutt 1885)
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Fartulum occidentale
Bartsch 1920
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synonym of Fartulum dextroversum | ||||||||||
Caecum californicum
Dall 1885
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Caecum dalli
Bartsch 1920
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synonym of Caecum quadratum | ||||||||||
Gastropoda
- Assimineidae
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Assiminea translucens
(Carpenter 1864)
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Gastropoda
- Vitrinellidae
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Vitrinella cf. oldroydi
Bartsch 1907
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Vitrinella stearnsii
(Bartsch 1907)
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recombined as Docomphala stearnsi | ||||||||||
Gastropoda
- Vermetidae
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Spiroglyphus lituellus
(Morch 1861)
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recombined as Dendropoma lituella | ||||||||||
Petaloconchus anellum
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Petaloconchus complicatus
Dall 1908
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Gastropoda
- Littorinidae
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Littorina planaxis
Philippi 1847
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replaced by Littorina (Neritrema) keenae | ||||||||||
Lacuna unifasciata
Carpenter 1857
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recombined as Lacuna (Epheria) unifasciata | ||||||||||
Littorina scutulata
Gould 1849
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recombined as Littorina (Littorina) scutulata | ||||||||||
Gastropoda
- Barleeiidae
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Amphithalamus tenuis
Bartsch 1911
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Amphithalamus inclusus
Lozouet 1998
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Barleeia cf. oldroydi
Bartsch 1920
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Barleeia ? subtenuis
Carpenter 1864
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"Diala" cf. marmorea
Carpenter 1864
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synonym of Pseudodiala acuta | ||||||||||
Gastropoda
- Rissoidae
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Alvania almo
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"Rissoina" aequisculpta
(Keep 1887)
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recombined as Alvinia aequisculpta | ||||||||||
Alvania purpurea
Dall 1871
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recombined as Alvinia purpurea | ||||||||||
Alvania cf. acutelirata
(Carpenter 1864)
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synonym of Actonia compacta | ||||||||||
Alvania cf. oldroydae
Bartsch 1911
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recombined as Actonia oldroydae | ||||||||||
Gastropoda
- Naticidae
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Lunatia cf. lewisii
(Gould 1847)
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recombined as Euspira lewisii | ||||||||||
Gastropoda
- Procerithiidae
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Bittium armillatum
Carpenter 1864
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recombined as Lirobittium armillatum | ||||||||||
Bittium attenuatum
Carpenter 1864
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recombined as Lirobittium attenuatum | ||||||||||
Gastropoda
- Epitoniidae
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Opalia cf. evicta
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Opalia wroblewskyi
(Mörch 1876)
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synonym of Opalia borealis | ||||||||||
Epitonium cf. indianorum
(Carpenter 1864)
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Gastropoda
- Neotaenioglossa
- Calyptraeidae
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Crepidula aculeata
(Gmelin 1791)
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= Bostrycapulus decorus
Collin 2019
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Hendy 2020 | |||||||||
Crepidula perforans
Valenciennes 1846
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Crepidula adunca
Sowerby 1824
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Gastropoda
- Cerithiidae
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Bittium eschrichtii
(Middendorff 1849)
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recombined as Neostylidium eschrichtii | ||||||||||
Subspecies: Bittium eschrichtii montereyense | ||||||||||
Gastropoda
- Trochidae
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Calliostoma ligatum
(Gould 1849)
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recombined as Calliostoma ligatus | ||||||||||
Tegula cf. brunnea
(Philippi 1849)
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recombined as Chlorostoma brunnea | ||||||||||
Tegula funebralis
(Adams 1855)
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original and current combination Chlorostoma funebrale | ||||||||||
"Tegula" montereyi
(Kiener 1850)
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recombined as Chlorostoma montereyi | ||||||||||
Halistylus pupoideus
(Carpenter 1864)
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Pupillaria cf. optabilis
(Carpenter 1864)
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recombined as Lirularia optabilis | ||||||||||
Gastropoda
- Turbinidae
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Arene acuticostata
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Subspecies: Arene acuticostata radiata | ||||||||||
Homalopoma carpenteri
(Pilsbry 1889)
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synonym of Homalopoma (Homalopoma) luridum | ||||||||||
Astraea gibberosa
(Dillwyn 1817)
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recombined as Pomaulax gibberosa | ||||||||||
Gastropoda
- Phasianellidae
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Tricolia cf. rubrilineata
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Tricolia cf. pulloides
(Carpenter 1865)
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recombined as Eulithidium pulloides | ||||||||||
Gastropoda
- Lepetellida
- Fissurellidae
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Diodora aspera
(Rathke 1833)
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Fissurella volcano
Reeve 1849
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Gastropoda
- Lepetellida
- Haliotidae
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Haliotis cracherodii
Leach 1814
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Haliotis rufescens
Swainson 1822
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Gastropoda
- Opisthobranchia
- Cylichnidae
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Acteocina culcitella
(Gould 1853)
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Bivalvia
- Cardiida
- Semelidae
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Cumingia californica
Conrad 1837
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Bivalvia
- Cardiida
- Veneridae
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Irus lamellifer
(Conrad 1837)
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recombined as Irusella lamellifera | ||||||||||
Protothaca staminea
(Conrad 1837)
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recombined as Leukoma staminea | ||||||||||
Transennella tantilla
(Gould 1853)
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recombined as Nutricola tantilla | ||||||||||
Petricola carditoides
(Conrad 1837)
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recombined as Petricola (Petricola) carditoides | ||||||||||
Bivalvia
- Cardiida
- Neoleptonidae
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Bernardina bakeri
Dall 1910
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Bivalvia
- Cardiida
- Lasaeidae
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Lasaea cf. cistula
Keen 1938
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synonym of Lasaea adansoni | ||||||||||
Bivalvia
- Pholadida
- Pholadidae
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Penitella penita
(Conrad 1837)
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Bivalvia
- Hiatellida
- Hiatellidae
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Hiatella cf. arctica
(Linnaeus 1767)
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Bivalvia
- Lucinida
- Lucinidae
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Epilucina californica
(Conrad 1837)
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original and current combination Phacoides californicus | ||||||||||
Bivalvia
- Carditida
- Carditidae
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Glans subquadrata
(Carpenter 1864)
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synonym of Glans carpenteri | ||||||||||
Bivalvia
- Arcida
- Glycymerididae
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Glycymeris subobsoleta
(Carpenter 1864)
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synonym of Glycymeris septentrionalis | ||||||||||
Bivalvia
- Pectinida
- Pectinidae
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Chlamys cf. hastatus
(Sowerby 1842)
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recombined as Chlamys hastata | ||||||||||
Bivalvia
- Ostreida
- Ostreidae
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Ostrea lurida
Carpenter 1864
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Bivalvia
- Mytilida
- Mytilidae
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Septifer cf. bifurcatus
(Conrad 1837)
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Scaphopoda
- Dentaliida
- Dentaliidae
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Dentalium semipolitum
Broderip and Sowerby 1829
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= Graptacme semistriata
Turton 1819
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Hendy 2020 | |||||||||
Rhynchonellata
- Terebratulida
- Cancellothyrididae
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Terebratulina unguicula
(Carpenter 1864)
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original and current combination Terebratula unguiculus | ||||||||||
Echinoidea
- Camarodonta
- Strongylocentrotidae
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Strongylocentrotus ? purpuratus
(Stimpson 1857)
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original and current combination Echinus purpuratus | ||||||||||
Anthozoa
- Scleractinia
- Dendrophylliidae
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Balanophyllia elegans
Verrill 1864
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see common names |
Geography
Country: | United States | State/province: | California | County: | Ventura |
Coordinates: | 33.2° North, 119.5° West (view map) | ||||
Paleocoordinates: | 33.2° North, 119.2° West | ||||
Basis of coordinate: | stated in text | ||||
Geographic resolution: | outcrop |
Time
Period: | Quaternary |
10 m.y. bin: | Cenozoic 6 |
Key time interval: | Quaternary |
Age range of interval: | 2.58000 - 0.00000 m.y. ago |
Stratigraphy
Formation: | Unnamed | ||||
Local section: | Army Camp Beach | ||||
Regional section: | San Nicholas Island | ||||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: 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. |
Lithology and environment
Primary lithology: | pebbly,shelly/skeletal conglomeratic,calcareous sandstone |
Includes fossils? | Y |
Lithology description: Generally comprise poorly sorted calcareous sand and gravel composed primarily of mollusc shell fragments, echinoid plates and spines, calcareous algae, and bryozoans. | |
Environment: | coastal indet. |
Glacial or sequence phase: | transgressive systems tract |
Geology comments: Higher emergent terraces may represent wave-abraded platforms that were eroded during eustatic changes in sea level combined with tectonic uplift. The lowest emergent terrace may have been cut during eustatic sea-level changes followed by very slight regional seaward warping. Presumably all the terrace platforms on San Nicholas Island were cut later than the middle Pleistocene diastrophism recognized elsewhere in southern California |
Taphonomy
Modes of preservation: | body |
Size of fossils: | macrofossils |
Collection methods and comments
Collection excludes: | some macrofossils,some microfossils |
Collection methods: | selective quarrying,field collection |
Reason for describing collection: | taxonomic analysis |
Collection method comments: Collections made by Vedder et al (1955-1956). Earlier collections by Cooper (1894), and Howard (1955) | |
Taxonomic list comments:Comprehensive for invertebrates |
Metadata
Also known as: | Vedder & Norris (1963) SN-1 | ||
Database number: | 37933 | ||
Authorizer: | A. Hendy | Enterer: | A. Hendy |
Modifier: | A. Hendy | Research group: | marine invertebrate |
Created: | 2004-03-27 12:15:20 | Last modified: | 2013-11-25 13:37:23 |
Access level: | the public | Released: | 2004-03-27 12:15:20 |
Creative Commons license: | CC BY |
Reference information
Primary reference:
10107. | 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] |
Secondary references:
63217 | A. J. W. Hendy. 2020. Unpublished taxonomic backbone for Eastern Pacific Invertebrate Communities of the Cenozoic (EPICC) Thematic Collections Network. [A. Hendy/A. Hendy/A. Hendy] |