6th Street and Flower Street: Late/Upper Pliocene, California

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Echinoidea
Echinoidea indet. (Leske 1778)
"Echinoid spines"
Gymnolaemata - Cheilostomata - Cellariidae
Cellaria mandibulata Hincks 1882
Bivalvia - Nuculanida - Nuculanidae
Nuculana taphria (Dall 1896)
recombined as Saccella taphria
Bivalvia - Lucinida - Lucinidae
Lucina tenuisculpta Carpenter 1864
recombined as Parvilucina tenuisculpta
Bivalvia - Cardiida - Cardiidae
Laevicardium (Nemocardium) centifilosum (Carpenter 1864)
original and current combination Cardium centifilosum
Laevicardium (Trachycardium) quadragenarium (Conrad 1837)
recombined as Dallocardia quadragenarium
Bivalvia - Cardiida - Chamidae
Pseudochama exogyra (Conrad 1837)
original and current combination Chama exogyra
Chama pellucida Broderip 1835
    = Chama arcana Bernard 1976
Hendy 2020
Bivalvia - Cardiida - Mactridae
Mactra (Spisula) hemphilli (Dall 1894)
recombined as Mactromeris hemphillii
questionable occurrence
Mactra sp. Linnaeus 1767
Bivalvia - Cardiida - Veneridae
Psephidia cymata Dall 1913
recombined as Nutricola cymata
questionable occurrence
Compsomyax subdiaphana (Carpenter 1864)
Bivalvia - Pholadida - Teredinidae
Teredo sp. Linnaeus 1758
Bivalvia - Solenida - Solenidae
Solen sicarius Gould 1850
Bivalvia - Hiatellida - Hiatellidae
Panope generosa (Gould 1850)
original and current combination Panopea generosa
Bivalvia - Carditida - Carditidae
Cardita barbarensis (Stearns 1890)
recombined as Hippocampocardia barbarensis
Cardita ventricosa Gould 1850
recombined as Coanicardita ventricosa
Bivalvia - Pectinida - Pectinidae
Pecten (Janira) bellus (Conrad 1856)
recombined as Euvola bella
Pecten (Pecten) hastatus (Sowerby 1842)
recombined as Chlamys hastata
as Pecten (Pecten) hastatus hericius
Gastropoda - Pseudomelaniidae
Spirotropis (Antiplanes) sp. ()
original and current combination Antiplanes
"dextral"
Spirotropis (Antiplanes) perversa (Gabb 1865)
Gastropoda - Neotaenioglossa - Calyptraeidae
Calyptraea ? mamillaris (Broderip 1834)
Crucibulum spinosum Conrad 1855
Crepidula princeps Conrad 1855
Gastropoda - Procerithiidae
Bittium (Lirobittium) catalinense (Bartsch 1907)
recombined as Lirobittium catalinensis
Bittium (Semibittium) rugatum (Carpenter 1866)
recombined as Lirobittium rugatum
Gastropoda - Ranellidae
Ranella (Priene) oregonensis (Redfield 1846)
recombined as Fusitriton oregonensis
Gastropoda - Neogastropoda - Cancellariidae
Cancellaria tritonidea (Gabb 1866)
recombined as Euclia tritonidea
Gastropoda - Neogastropoda
Fusinus arnoldi (Cossmann 1903)
recombined as Harfordia arnoldi
Gastropoda - Neogastropoda - Olividae
Olivella pedroana (Conrad 1855)
recombined as Callianax pedroana
Olivella boetica (Carpenter 1864)
recombined as Callianax baetica
Gastropoda - Neogastropoda - Mangeliidae
Mangelia (Bela) hecetae Dall and Bartsch 1910
recombined as Kurtziella hecetae
as Mangelia (Bela) hecetae barbarensis
Gastropoda - Neogastropoda - Conidae
Conus califoricus
Gastropoda - Neogastropoda - Pseudomelatomidae
Pseudomelatoma penicillata (Carpenter 1864)
Gastropoda - Neogastropoda - Turridae
Moniliopsis incisa (Carpenter 1863)
recombined as Ophiodermella incisa
as Moniliopsis incisa incisa and Moniliopsis indsa ophioderma
Megasurcula carpenteriana (Gabb 1866)
as Megasurcula carpenteriana tryoniana
Gastropoda - Neogastropoda - Nassariidae
Nassarius insculptus (Carpenter 1864)
recombined as Hima insculpta
Nassarius (Schizopyga) mendicus (Gould 1849)
recombined as Hima mendica
as Nassarius (Schizopyga) mendicus mendicus and Nassarius (Schizopyga) mendicus cooperi and Nassarius (Schizopyga) mendicus cooperi
Nassarius (Schizopyga) perpinguis (Hinds 1844)
recombined as Caesia perpinguis
Gastropoda - Neogastropoda - Columbellidae
Amphissa reticulata (Dall 1916)
Mitrella tuberosa (Carpenter 1864)
Mitrella gouldii (Carpenter 1857)
synonym of Mitrella gausapata
Mitrella carinata (Hinds 1844)
recombined as Alia carinata
as Mitrella carinata gausapata
Gastropoda - Neogastropoda - Siphonaliidae
Cantharus fortis (Carpenter 1866)
recombined as Calicantharus fortis
as Cantharus fortis angulatus
Gastropoda - Neogastropoda - Mitridae
Mitra idae Melville 1893
recombined as Mitra (Atrimitra) idae
Gastropoda - Neogastropoda - Muricidae
Trophon (Boreotrophon) orpheus (Gould 1842)
as Trophon (Boreotrophon) orpheus praecursor
    = Boreotrophon pedroana Arnold 1903
Hendy 2021
Tritonalia foveolata (Hinds 1844)
recombined as Paciocinebrina foveolata
Tritonalia interfossa (Carpenter 1864)
recombined as Paciocinebrina interfossa
as Tritonalia interfossa ? clathrata
Acanthina spirata (Blainville 1832)
recombined as Acanthinucella spirata
Gastropoda - Naticidae
Polinices (Neverita) reclusianus (Deshayes 1839)
recombined as Glossaulax reclusiana
Gastropoda - Rissoidae
Alvania acutilirata (Carpenter 1864)
synonym of Actonia compacta
Alvania rosana Bartsch 1911
recombined as Actonia rosana
Gastropoda - Epitoniidae
Epitonium (Nitidiscala) indianorum (Carpenter 1864)
questionable occurrence
Gastropoda - Turritellidae
Turritella cooperi Carpenter 1864
Gastropoda - Opisthobranchia - Cylichnidae
Cylichna alba (Brown 1827)
Gastropoda - Opisthobranchia - Retusidae
Volvulella californica
Retusa (Adeocina) culcitella
Gastropoda - Heterostropha - Pyramidellidae
Turbonilla (Mormula) tridentata (Carpenter 1865)
recombined as Paramormula tridentata
Odostomia (Evalea) gravida (Gould 1853)
recombined as Brachystomia gravida
questionable occurrence?
Gastropoda - Trochidae
Calliostoma annulatum (Lightfoot 1786)
Calliostoma gemmulatum Carpenter 1864
Scaphopoda - Dentaliida - Dentaliidae
Dentalium neohexagonum Sharp and Pilsbry 1897
see common names

Geography
Country:United States State/province:California County:Los Angeles
Coordinates: 34.1° North, 118.3° West (view map)
Paleocoordinates:33.9° North, 117.3° West
Time
Period:Neogene Epoch:Pliocene
Stage:Piacenzian 10 m.y. bin:Cenozoic 6
Key time interval:Late/Upper Pliocene
Age range of interval:3.60000 - 2.58000 m.y. ago
Stratigraphy
Formation:Fernando
Lithology and environment
Primary lithology:brown,gray,green silty,sandy "shale"
Secondary lithology: conglomerate
Includes fossils?Y
Lithology description: "silty and sandy shales of a buff to olive gray and brownish gray color, with a few thin layers of conglomerate, small pebbles, and fragments of molluscan fossils. The rich molluscan fossil zone near the top of the exposed section consists in places of about 30 to 40 per cent broken and unbroken calcareous shells.
Environment:marine indet.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Museum repositories:CIT,LACM
Collection method comments: These collections are now located at the University of California at Los Angeles, the California Institute of Technology, and the Los Angeles Museum of History, Science, and Art.
Metadata
Also known as:Sixth Street and Flower Street; excavation for the foundation of the Richfield Oil Company Building
Database number:200403
Authorizer:J. Marcot, A. Hendy Enterer:J. Marcot, A. Hendy
Modifier:J. Marcot Research group:marine invertebrate
Created:2019-04-02 12:45:43 Last modified:2019-04-02 12:58:27
Access level:the public Released:2019-04-02 12:45:43
Creative Commons license:CC BY
Reference information

Primary reference:
68410. E. K. Soper and U. S. Grant, IV. 1932. Geology and Paleontology of a Portion of Los Angeles, California. Geological Society of America Bulletin 43(4):1041-1068 [J. Marcot/J. Marcot]

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]