Hilltop Quarry of Schenck [Lomita Marl]: Middle Pleistocene, California
collected by S. Berry, E. P. Chace, & R. Cross

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Scaphopoda - Dentaliida - Dentaliidae
Dentalium pretiosum Nuttall in Sowerby 1860
recombined as Antalis pretiosa
Gastropoda - Heterostropha - Pyramidellidae
Iselica fenestrata (Carpenter 1864)
synonym of Iselica ovoidea
Gastropoda - Heterostropha - Ringiculidae
Actaeon (Microglyphis) schencki Berry 1941
synonym of Microglyphis breviculus
Gastropoda - Pseudomelaniidae
Antiplanes perversa (Gabb 1865)
recombined as Spirotropis (Antiplanes) perversa
Pseudomelatoma semiinflata (Grant and Gale 1931)
recombined as Crassispira seminflata
Gastropoda - Epitoniidae
Epitonium (Opalia) chacei (Strong 1937)
synonym of Opalia borealis
"Alabina" effiae Willett 1939
recombined as Acirsella effiae
Gastropoda - Cerithiidae
Alabina californica (Dall and Bartsch 1901)
recombined as Elassum californicum
Gastropoda - Eulimidae
Balcis (Vitreolina) thersites (Carpenter 1864)
recombined as Melanella thersites
Gastropoda - Neotaenioglossa - Calyptraeidae
Calyptraea cf. contorta (Carpenter 1864)
Crepidula nummaria Gould 1846
Crepidula adunca Sowerby 1824
Crepidula lingulata Gould 1846
recombined as Crepipatella lingulata
Gastropoda - Vermetidae
Aletes squamigerus Carpenter 1857
recombined as Thylacodes squamigerus
Gastropoda - Bursidae
Bursa californica (Hinds 1843)
synonym of Crossata ventricosa
Gastropoda - Cypraeidae
Cypraea fernandoensis Arnold 1907
synonym of Neobernaya spadicea
Gastropoda - Neogastropoda - Muricidae
"Murex" gemma Sowerby 1879
recombined as Maxwellia gemma
"Murex" eldridgei Arnold 1907
recombined as Maxwellia eldridgei
"Murex" santarosanus (Dall 1905)
recombined as Murexiella santarosana
Ocinebra barbarensis (Gabb 1865)
recombined as Paciocinebrina barbarensis
Ocinebra lurida (Middendorff 1848)
recombined as Paciocinebrina lurida
Ocinebra subangulata (Stearns 1873)
recombined as Urosalpinx subangulata
Boreotrophon triangulatus (Carpenter 1864)
Gastropoda - Neogastropoda - Cystiscidae
Marginella (Cystiscus) regularis (Carpenter 1864)
    = Plesiocystiscus politulus Dall 1919
Hendy 2020
Marginella jewettii Carpenter 1857
recombined as Plesiocystiscus jewetti
Marginella (Cypraeolina) pyriformis (Carpenter 1864)
synonym of Granulina margaritula
Gastropoda - Neogastropoda - Mitridae
Mitra catalinae (Dall 1919)
recombined as Mitra (Atrimitra) catalinae
Gastropoda - Neogastropoda - Pseudolividae
Macron aethiops (Reeve 1847)
Gastropoda - Neogastropoda - Olividae
Olivella biplicata (Sowerby 1825)
recombined as Callianax biplicata
Olivella baetica Carpenter 1864
recombined as Callianax baetica
Gastropoda - Neogastropoda - Siphonaliidae
Cantharus fortis (Carpenter 1866)
recombined as Calicantharus fortis
Gastropoda - Neogastropoda - Nassariidae
Nassarius fossatus (Gould 1849)
recombined as Caesia fossatus
Nassarius (Schizopyga) perpinguis (Hinds 1844)
recombined as Caesia perpinguis
Nassarius (Schizopyga) cooperi (Forbes 1852)
recombined as Hima cooperi
Nassarius insculptus (Carpenter 1864)
recombined as Hima insculpta
Gastropoda - Neogastropoda - Buccinidae
Neptunea tabulata (Baird 1863)
recombined as Neptunea (Sulcosipho) tabulata
Kelletia kelletii (Forbes 1852)
Gastropoda - Neogastropoda - Fasciolariidae
Fusinus barbarensis (Trask 1855)
recombined as Barbarofusus barbarensis
Gastropoda - Neogastropoda - Columbellidae
Mitrella tuberosa (Carpenter 1864)
Gastropoda - Neogastropoda - Turridae
Moniliopsis chacei Berry 1941
synonym of Ophiodermella cancellata
Taranis strongi (Arnold 1903)
original and current combination Mangilia (Taranis) strongi
Gastropoda - Neogastropoda - Strictispiridae
Clavus (Crassispira) zizyphus Berry 1940
recombined as Strictispira zizyphus
Gastropoda - Neogastropoda - Clathurellidae
Clathurella tridesmia (Berry 1941)
recombined as Crockerella tridesmia
Clathurella conradiana Gabb 1866
recombined as Crockerella conradiana
Clathurella canfieldi Dall 1871
Gastropoda - Neogastropoda - Conidae
Oenopota turrispira Berry 1941
recombined as Propebela turrispira
Oenopota cf. viridula
    = Propebela fidicula Gould 1849
Hendy 2020
Conus californicus Reeve 1844
recombined as Californiconus californicus
Gastropoda - Neogastropoda - Cancellariidae
Admete gracilior (Gabb 1869)
Gastropoda - Neogastropoda
Fusinus monksae Dall 1915
synonym of Harfordia robusta
Mitromorpha barbarensis (Arnold 1907)
original and current combination Mitromorpha filosa barbarensis
Mitromorpha galeana Berry 1941
recombined as Cymakra galeana
Gastropoda - Naticidae
Natica (Tectonatica) clausa (Broderip and Sowerby 1829)
synonym of Cryptonatica affinis
Gastropoda - Caecidae
Caecum (Micranellum) crebricinctum (Carpenter 1864)
original and current combination Caecum crebricinctum
Gastropoda - Barleeiidae
Barleeia oldroydi Bartsch 1920
Barleeia marmorea (Carpenter 1864)
synonym of Pseudodiala acuta
Gastropoda - Rissoidae
Rissoina kelseyi Dall and Bartsch 1902
Alvania acutilirata (Carpenter 1864)
synonym of Actonia compacta
Gastropoda - Skeneopsidae
Skenea cyclostoma Berry 1941
synonym of Skeneopsis smithi
Gastropoda - Procerithiidae
Bittium attenuatum Carpenter 1864
recombined as Lirobittium attenuatum
Bittium rugatum Carpenter 1866
recombined as Lirobittium rugatum
Bittium asperum (Gabb 1861)
recombined as Lirobittium asperum
Bittium catalinense (Bartsch 1907)
recombined as Lirobittium catalinensis
Gastropoda - Turbinidae
Astraea (Pachypoma) inaequalis (Martyn 1784)
    = Pomaulax gibberosa Dillwyn 1817
Hendy 2020
Homalopoma paucicostatum (Dall 1871)
recombined as Homalopoma (Homalopoma) paucicostatum
Homalopoma fenestratum (Dall 1919)
synonym of Homalopoma (Homalopoma) radiatum
Homalopoma carpenteri (Pilsbry 1889)
synonym of Homalopoma (Homalopoma) luridum
Homalopoma bacula (Carpenter 1864)
recombined as Homalopoma (Homalopoma) baculum
Margarites cf. pupillus (Gould 1849)
recombined as Pupillaria pupilla
Gastropoda - Skeneidae
Liotia acuticostata (Carpenter 1864)
recombined as Parviturbo acuticostatus
Gastropoda - Liotiidae
Liotia fenestrata Carpenter 1864
Gastropoda - Trochidae
Tegula (Chlorostoma) aureotincta (Forbes 1852)
recombined as Chlorostoma aureotincta
Tegula (Chlorostoma) funebralis (Adams 1855)
original and current combination Chlorostoma funebrale
Calliostoma grantianum Berry 1940
Calliostoma canaliculatum (Lightfoot 1786)
Calliostoma cf. supragranosum Carpenter 1864
Halistylus subpupoideus (Tryon 1887)
synonym of Halistylus pupoideus
Norrisia norrisii (Sowerby I 1838)
Margarites (Lirularia) lirulatus (Carpenter 1864)
recombined as Lirularia lirulata
Margarites (Lirularia) arestus (Berry 1941)
recombined as Lirularia aresta
Margarites (Lirularia) parcipictus (Carpenter 1864)
recombined as Lirularia parcipicta
Gastropoda - Phasianellidae
Phasianella compta Gould 1855
recombined as Eulithidium comptum
Gastropoda - Lepetellida - Fissurellidae
Diodora murina
    = Diodora arnoldi McLean 1966
Hendy 2020
Puncturella cucullata (Gould 1846)
recombined as Craniopsis cucullata
Gastropoda - Opisthobranchia - Cylichnidae
Retusa harpa (Dall 1871)
recombined as Acteocina harpa
Gastropoda - Patellida - Lottiidae
Acmaea lepisma Berry 1940
synonym of Lottia depicta
Bivalvia - Nuculanida - Nuculanidae
Nuculana praecursor (Arnold 1903)
synonym of Nuculana minuta
Bivalvia - Mytilida - Crenellidae
Crenella divaricata (d'Orbigny 1853)
    = Crenella decussata Montagu 1808
Hendy 2020
Bivalvia - Pectinida - Pectinidae
Chlamys aff. behringianus (Middendorff 1849)
    = Chlamys sp. Röding 1798
Hendy 2020
Bivalvia - Arcida - Glycymerididae
Glycymeris barbarensis (Conrad 1856)
    = Glycymeris septentrionalis Middendorf 1849
Hendy 2021
Glycymeris subobsoleta (Carpenter 1864)
synonym of Glycymeris septentrionalis
Bivalvia - Arcida - Arcidae
Arca (Arca) sisquocensis Reinhart 1937
Bivalvia - Lucinida - Lucinidae
Lucina (Codakia) californica (Conrad 1837)
original and current combination Phacoides californicus
Lucina (Parvilucina) tenuisculpta (Carpenter 1864)
recombined as Parvilucina tenuisculpta
Bivalvia - Cardiida - Veneridae
Ventricola fordii (Yates 1890)
recombined as Globivenus fordii
Psephidia ovalis Dall 1902
recombined as Nutricola ovalis
Transennella tantilla (Gould 1853)
recombined as Nutricola tantilla
Psephidia cymata Dall 1913
recombined as Nutricola cymata
Bivalvia - Cardiida - Chamidae
Pseudochama cf. exogyra (Conrad 1837)
original and current combination Chama exogyra
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 - Semelidae
Semele pulchra (Sowerby I 1832)
recombined as Semele (Semele) pulchra
Bivalvia - Hiatellida - Hiatellidae
Saxicava arctica (Linnaeus 1767)
recombined as Hiatella arctica
Bivalvia - Carditida - Crassatellidae
Crassatella lomitensis (Oldroyd 1924)
synonym of Hybolophus fluctuatus
Bivalvia - Carditida - Carditidae
Glans carpenteri (Lamy 1922)
Cardita cf. ventricosa Gould 1850
recombined as Coanicardita ventricosa
Cardita (Miodontiscus) prolongata (Carpenter 1864)
recombined as Miodontiscus prolongatus
unclassified
Astraea (Pomaulax) undosa (Wood 1828)
recombined as Megastraea undosa
Astraea (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
Stage:Chibanian 10 m.y. bin:Cenozoic 6
Key time interval:Middle Pleistocene
Age range of interval:0.77400 - 0.12900 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
Collectors:S. Berry, E. P. Chace, & R. Cross
Collection method comments: COLLECTOR: S. Berry, E. P. Chace, & R. Cross; multiple collecting events. REPOSITORY: Likely to be at CAS; former Stanford collections.
Taxonomic list comments:COVERAGE: Comprehensive for molluscs. NOMENCLATURE: Original identifications by S. Berry.
Metadata
Database number:203113
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:A. Hendy Research group:marine invertebrate
Created:2019-07-26 16:17:59 Last modified:2021-11-15 00:33:01
Access level:the public Released:2019-07-26 16:17:59
Creative Commons license:CC BY
Reference information

Primary reference:
69593. H. G. Schenck. 1945. Geologic Application of Biometrical Analysis of Molluscan Assemblages. Journal of Paleontology 19(5):504-521 [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]