Hilltop Quarry of Stanford [Lomita Marl]: Middle Pleistocene, California

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Polyplacophora - Chitonida - Callistoplacidae
Callistochiton palmulatus Dall 1879
Gastropoda - Skeneidae
Liotia acutecostata (Carpenter 1864)
recombined as Parviturbo acuticostatus
Gastropoda - Phasianellidae
Tricolia compta (Gould 1855)
recombined as Eulithidium comptum
Gastropoda - Turbinidae
Pupillaria pupilla (Gould 1849)
Homalopoma bacula (Carpenter 1864)
recombined as Homalopoma (Homalopoma) baculum
Homalopoma carpenteri (Pilsbry 1889)
synonym of Homalopoma (Homalopoma) luridum
Homalopoma fenestratum (Dall 1919)
synonym of Homalopoma (Homalopoma) radiatum
Homalopoma paucicostatum (Dall 1871)
recombined as Homalopoma (Homalopoma) paucicostatum
Pachypoma gibberosum (Dillwyn 1817)
recombined as Pomaulax gibberosa
Gastropoda - Trochidae
Tegula aureotincta (Forbes 1852)
recombined as Chlorostoma aureotincta
Tegula funebralis (Adams 1855)
original and current combination Chlorostoma funebrale
Calliostoma supragranosum Carpenter 1864
Calliostoma doliarium (Chemnitz 1788)
synonym of Calliostoma canaliculatum
Halistylus pupoideus (Carpenter 1864)
Norrisia norrisi (Sowerby I 1838)
recombined as Norrisia norrisii
Pupillaria parcipicta (Carpenter 1864)
recombined as Lirularia parcipicta
Pupillaria lirulata (Carpenter 1864)
recombined as Lirularia lirulata
Gastropoda - Lepetellida - Fissurellidae
Puncturella cucullata (Gould 1846)
recombined as Craniopsis cucullata
Diodora murina
    = Diodora arnoldi McLean 1966
Hendy 2020
Gastropoda - Epitoniidae
Opalia chacei Strong 1937
synonym of Opalia borealis
Gastropoda - Eulimidae
Balcis thersites (Carpenter 1864)
recombined as Melanella thersites
Gastropoda - Neotaenioglossa - Calyptraeidae
Crepidula nummaria Gould 1846
Crepidula adunca Sowerby 1824
Crepipatella lingulata (Gould 1846)
Gastropoda - Cerithiidae
Elassum californicum (Dall and Bartsch 1901)
Gastropoda - Turritellidae
Turritella cooperi Carpenter 1864
Turritella pedroensis Applin 1920
Gastropoda - Pseudomelaniidae
Antiplanes perversa (Gabb 1865)
recombined as Spirotropis (Antiplanes) perversa
Gastropoda - Neogastropoda - Mitridae
Mitra catalinae (Dall 1919)
recombined as Mitra (Atrimitra) catalinae
Gastropoda - Neogastropoda - Olividae
Olivella biplicata (Sowerby 1825)
recombined as Callianax biplicata
Gastropoda - Neogastropoda - Buccinidae
Kelletia kelleti (Forbes 1852)
recombined as Kelletia kelletii
Neptunea tabulata (Baird 1863)
recombined as Neptunea (Sulcosipho) tabulata
Exilioidea rectirostris (Carpenter 1864)
Gastropoda - Neogastropoda - Siphonaliidae
Calicantharus fortis (Carpenter 1866)
Gastropoda - Neogastropoda - Nassariidae
"Nassa" cooperi Forbes 1852
recombined as Hima cooperi
"Nassa" insculpta Carpenter 1864
recombined as Hima insculpta
"Nassa" fossata (Gould 1849)
recombined as Caesia fossatus
"Nassa" perpinguis Hinds 1844
recombined as Caesia perpinguis
Gastropoda - Neogastropoda - Columbellidae
Mitrella tuberosa (Carpenter 1864)
Gastropoda - Neogastropoda - Conidae
"Lora" sp. Gray 1847
replaced by Oenopota
Conus californicus Reeve 1844
recombined as Californiconus californicus
Gastropoda - Neogastropoda - Pseudomelatomidae
Pseudomelatoma torosa (Gabb 1864)
Pseudomelatoma penicillata (Carpenter 1864)
SUBSPECIES: Pseudomelatoma penicillata semiinflata
Gastropoda - Neogastropoda - Clathurellidae
Clathurella conradiana Gabb 1866
recombined as Crockerella conradiana
Clathurella canfieldi Dall 1871
Gastropoda - Neogastropoda - Mangeliidae
"Mangelia" sp. (Loven 1846)
corrected as Cythara (Mangelia)
Gastropoda - Neogastropoda - Strictispiridae
Clavus zizyphus (Berry 1940)
recombined as Strictispira zizyphus
Gastropoda - Neogastropoda - Turridae
Taranis strongi (Arnold 1903)
original and current combination Mangilia (Taranis) strongi
Gastropoda - Neogastropoda - Pseudolividae
Macron aethiops (Reeve 1847)
Gastropoda - Neogastropoda
Harfordia monksae (Dall 1915)
synonym of Harfordia robusta
Gastropoda - Neogastropoda - Cystiscidae
Cystiscus jewetti (Carpenter 1857)
recombined as Plesiocystiscus jewetti
Cystiscus regularis (Carpenter 1864)
    = Plesiocystiscus politulus Dall 1919
Hendy 2020
Cypraeolina pyriformis (Carpenter 1864)
synonym of Granulina margaritula
Gastropoda - Neogastropoda - Muricidae
Ceratostoma foliata (Gmelin 1791)
recombined as Ceratostoma foliatum
Boreotrophon multicostatus (Eschscholtz 1829)
Ocenebra barbarensis (Gabb 1865)
recombined as Paciocinebrina barbarensis
Ocinebra lurida (Middendorff 1848)
recombined as Paciocinebrina lurida
SUBSPECIES: Ocinebra lurida munda
Ocinebra subangulata (Stearns 1873)
recombined as Urosalpinx subangulata
Maxwellia eldridgei (Arnold 1907)
Maxwellia gemma (Sowerby 1879)
Gastropoda - Neogastropoda - Cancellariidae
Massyla gracilior (Gabb 1869)
recombined as Admete gracilior
Gastropoda - Bursidae
Bursa californica (Hinds 1843)
synonym of Crossata ventricosa
Gastropoda - Cypraeidae
Zonaria fernandoensis (Arnold 1907)
synonym of Neobernaya spadicea
Gastropoda - Littorinidae
Lacuna sp. Turton 1827
Gastropoda - Naticidae
Natica clausa Broderip and Sowerby 1829
synonym of Cryptonatica affinis
Gastropoda - Rissoidae
Alvania acutelirata (Carpenter 1864)
synonym of Actonia compacta
Rissoina kelseyi Dall and Bartsch 1902
Gastropoda - Barleeiidae
Diala marmorea Carpenter 1864
synonym of Pseudodiala acuta
Barleeia oldroydi Bartsch 1920
Gastropoda - Vermetidae
Aletes squamigerus Carpenter 1857
recombined as Thylacodes squamigerus
Petaloconchus sp. Lea 1843
Gastropoda - Caecidae
Micranellum crebricinctum (Carpenter 1864)
original and current combination Caecum crebricinctum
Gastropoda - Procerithiidae
Bittium rugatum Carpenter 1866
recombined as Lirobittium rugatum
Bittium catalinensis Bartsch 1907
recombined as Lirobittium catalinensis
Bittium attenuatum Carpenter 1864
recombined as Lirobittium attenuatum
Bittium asperum (Gabb 1861)
recombined as Lirobittium asperum
Gastropoda - Heterostropha - Pyramidellidae
Iselica fenestrata (Carpenter 1864)
synonym of Iselica ovoidea
Turbonilla tenuicula (Gould 1853)
recombined as Pyrgiscus tenuiculus
Gastropoda - Opisthobranchia - Cylichnidae
Coleophysis harpa (Dall 1871)
recombined as Acteocina harpa
Acteocina culcitella (Gould 1853)
Bivalvia - Arcida - Glycymerididae
Glycymeris profunda (Dall 1879)
synonym of Glycymeris septentrionalis
Glycymeris subobsoleta (Carpenter 1864)
synonym of Glycymeris septentrionalis
Bivalvia - Pectinida - Anomiidae
Pododesmus macrochisma (Deshayes 1839)
recombined as Pododesmus (Monia) macrochisma
Bivalvia - Pectinida - Pectinidae
Chlamys anapleus Woodring 1946
Bivalvia - Mytilida - Crenellidae
Crenella decussata (Montagu 1808)
Bivalvia - Mytilida - Mytilidae
Modiolus sp. (Lamarck 1801)
Bivalvia - Lucinida - Lucinidae
Parvilucina tenuisculpta (Carpenter 1864)
Epilucina californica (Conrad 1837)
original and current combination Phacoides californicus
Bivalvia - Cardiida - Chamidae
Chama pellucida Broderip 1835
    = Chama arcana Bernard 1976
Hendy 2021
Pseudochama exogyra (Conrad 1837)
original and current combination Chama exogyra
Bivalvia - Cardiida - Veneridae
Transenella tantilla (Gould 1853)
recombined as Nutricola tantilla
Psephidia cymata Dall 1913
recombined as Nutricola cymata
Psephidia ovalis Dall 1902
recombined as Nutricola ovalis
Antigona fordi (Yates 1890)
recombined as Globivenus fordii
Bivalvia - Cardiida - Cardiidae
Nemocardium centifilosum (Carpenter 1864)
recombined as Nemocardium (Keenaea) centifilosum
Trachycardium quadragenarium (Conrad 1837)
recombined as Dallocardia quadragenarium
Bivalvia - Cardiida - Tellinidae
Tellina carpenteri (Dall 1900)
recombined as Ameritella carpenteri
Bivalvia - Cardiida - Psammobiidae
Gari edentula (Gabb 1869)
synonym of Gari (Gobraeus) fucata
Bivalvia - Hiatellida - Hiatellidae
Saxicava arctica (Linnaeus 1767)
recombined as Hiatella arctica
Bivalvia - Carditida - Carditidae
Cyclocardia occidentalis (Conrad 1855)
recombined as Coanicardita occidentalis
Cyclocardia sp. Conrad 1867
Miodontiscus prolongatus (Carpenter 1864)
Glans subquadrata (Carpenter 1864)
synonym of Glans carpenteri
Bivalvia - Carditida - Crassatellidae
Eucrassatella fluctuata (Carpenter 1864)
recombined as Hybolophus fluctuatus
Bivalvia - Nuculanida - Nuculanidae
Nuculana minuta (Müller 1776)
SUBSPECIES: Nuculana minuta praecursor
Scaphopoda - Dentaliida - Dentaliidae
Dentalium pretiosum Nuttall in Sowerby 1860
recombined as Antalis pretiosa
unclassified
Pomaulax undosus (Wood 1828)
recombined as Megastraea undosa
Pomaulax petrothauma Berry 1940
synonym of Megastraea turbanica
see common names

Geography
Country:United States State/province:California
Coordinates: 33.8° North, 118.3° West (view map)
Paleocoordinates:33.8° North, 118.3° West
Basis of coordinate:based on nearby landmark
Geographic resolution:outcrop
Time
Period:Quaternary Epoch:Pleistocene
10 m.y. bin:Cenozoic 6
Key time interval:Middle Pleistocene
Age range of interval:0.78100 - 0.12600 m.y. ago
Stratigraphy
Formation:Lomita Marl
Stratigraphic resolution:formation
Stratigraphy comments: LITHOSTRATIGRAPHY: From the Lomita Marl, which is locally overlain by the Timms Point Silt and San Pedro Sand. AGE: Early Pleistocene in Woodring et al. (1946) and Valentine PhD, but is now regarded as Middle Pleistocene [A. Hendy]. STRATIGRAPHIC POSITION: List is representation of formation at this section.
Lithology and environment
Primary lithology: unlithified sandy,calcareous marl
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Not listed, but generally a calcareous sandy marl. LITHIFICATION: Not stated, but typically unlithified to slightly poorly-lithified.
Environment:offshore
Geology comments: ENVIRONMENT: Typically containing and offshore fauna.
Taphonomy
Modes of preservation:body,original aragonite,original calcite
Degree of concentration:-lag
Size of fossils:macrofossils,mesofossils
Temporal resolution:time-averaged
Spatial resolution:parautochthonous
Collection methods and comments
Collection methods:surface (float),surface (in situ)
Reason for describing collection:paleoecologic analysis
Museum repositories:CAS
Collection method comments: COLLECTOR: Unknown collectors, but likely from multiple collecting events. REPOSITORY: Likely to be at CAS; former Stanford collections.
Taxonomic list comments:COVERAGE: Comprehensive for molluscs. NOMENCLATURE: Somewhat antiquated but with many species-resolution identifications.
Metadata
Database number:203114
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2019-07-26 16:39:37 Last modified:2021-11-13 22:33:12
Access level:the public Released:2019-07-26 16:39:37
Creative Commons license:CC BY
Reference information

Primary reference:

69594. J. W. Valentine. 1958. Paleoecologic molluscan geography of the Californian Pleistocene. [A. Hendy/A. Hendy]

Secondary references:

78337 A. Hendy. 2021. A review of the Quaternary Mollusca of the Palos Verdes Peninsula. [A. Hendy/A. Hendy]
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]