6th Street and Flower Street (Pliocene of the United States)

Also known as Sixth Street and Flower Street; excavation for the foundation of the Richfield Oil Company Building

Where: Los Angeles County, California (34.1° N, 118.3° W: paleocoordinates 33.9° N, 117.3° W)

When: Fernando Formation, Late/Upper Pliocene (3.6 - 2.6 Ma)

Environment/lithology: marine; brown, gray, green, silty, sandy shale and conglomerate

• "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.

Size class: macrofossils

Reposited in the CIT, LACM

• 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.

Primary reference: 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]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 200403: authorized by Jonathan Marcot, entered by Jonathan Marcot on 02.04.2019, edited by Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

Echinoidea
  -
Echinoidea indet. Leske 1778 sea urchin
"Echinoid spines"
Gastropoda
 Trochoidea - Trochidae
Calliostoma annulatum Lightfoot 1786 top snail
Calliostoma gemmulatum Carpenter 1864 top snail
 Neotaenioglossa - Calyptraeidae
Crepidula princeps Conrad 1855 slipper shell
Calyptraea ? mamillaris Broderip 1834 slipper shell
Crucibulum spinosum Conrad 1855 slipper shell
 Pseudomelanoidea - Pseudomelaniidae
"Spirotropis (Antiplanes) sp." = Antiplanes, Spirotropis (Antiplanes) perversa
"Spirotropis (Antiplanes) sp." = Antiplanes snail
"dextral"
 Cerithioidea - Turritellidae
Turritella cooperi Carpenter 1864 turret shell
 Epitonioidea - Epitoniidae
Epitonium (Nitidiscala) indianorum Carpenter 1864 wentletrap
questionable occurrence
 Sorbeoconcha - Rissoidae
"Alvania acutilirata" = Actonia compacta, "Alvania rosana" = Actonia rosana
"Alvania acutilirata" = Actonia compacta Carpenter 1864 snail
"Alvania rosana" = Actonia rosana Bartsch 1911 snail
 Neogastropoda - Olividae
"Olivella pedroana" = Callianax pedroana, "Olivella boetica" = Callianax baetica
"Olivella pedroana" = Callianax pedroana Conrad 1855 olive snail
"Olivella boetica" = Callianax baetica Carpenter 1864 olive snail
 Neogastropoda - Muricidae
"Acanthina spirata" = Acanthinucella spirata, "Tritonalia foveolata" = Paciocinebrina foveolata, "Tritonalia interfossa" = Paciocinebrina interfossa, Boreotrophon pedroana2
"Acanthina spirata" = Acanthinucella spirata Blainville 1832 murex snail
"Tritonalia foveolata" = Paciocinebrina foveolata Hinds 1844 murex snail
"Tritonalia interfossa" = Paciocinebrina interfossa Carpenter 1864 murex snail
as Tritonalia interfossa ? clathrata
Boreotrophon pedroana2 Arnold 1903 murex snail
as Trophon (Boreotrophon) orpheus praecursor
 Neogastropoda - Mitridae
"Mitra idae" = Mitra (Atrimitra) idae
"Mitra idae" = Mitra (Atrimitra) idae Melville 1893 mitre shell
 Neogastropoda -
"Fusinus arnoldi" = Harfordia arnoldi
"Fusinus arnoldi" = Harfordia arnoldi Cossmann 1903 snail
 Neogastropoda - Siphonaliidae
"Cantharus fortis" = Calicantharus fortis
"Cantharus fortis" = Calicantharus fortis Carpenter 1866 snail
as Cantharus fortis angulatus
 Neogastropoda - Nassariidae
"Nassarius (Schizopyga) perpinguis" = Caesia perpinguis, "Nassarius insculptus" = Hima insculpta, "Nassarius (Schizopyga) mendicus" = Hima mendica
"Nassarius (Schizopyga) perpinguis" = Caesia perpinguis Hinds 1844 snail
"Nassarius insculptus" = Hima insculpta Carpenter 1864 snail
"Nassarius (Schizopyga) mendicus" = Hima mendica Gould 1849 snail
as Nassarius (Schizopyga) mendicus mendicus and Nassarius (Schizopyga) mendicus cooperi and Nassarius (Schizopyga) mendicus cooperi
 Neogastropoda - Columbellidae
Amphissa reticulata, "Mitrella gouldii" = Mitrella gausapata, Mitrella tuberosa, "Mitrella carinata" = Alia carinata
Amphissa reticulata Dall 1916 snail
"Mitrella gouldii" = Mitrella gausapata Gould 1850 snail
Mitrella tuberosa Carpenter 1864 snail
"Mitrella carinata" = Alia carinata Hinds 1844 dovesnail
as Mitrella carinata gausapata
 Neogastropoda - Cancellariidae
"Cancellaria tritonidea" = Euclia tritonidea
"Cancellaria tritonidea" = Euclia tritonidea Gabb 1866 snail
 Neogastropoda - Pseudomelatomidae
Pseudomelatoma penicillata Carpenter 1864 snail
 Neogastropoda - Turridae
"Moniliopsis incisa" = Ophiodermella incisa Carpenter 1863 turrid
as Moniliopsis incisa incisa and Moniliopsis indsa ophioderma
Megasurcula carpenteriana Gabb 1866 turrid
as Megasurcula carpenteriana tryoniana
 Neogastropoda - Conidae
 Neogastropoda - Mangeliidae
"Mangelia (Bela) hecetae" = Kurtziella hecetae
"Mangelia (Bela) hecetae" = Kurtziella hecetae Dall and Bartsch 1910 snail
as Mangelia (Bela) hecetae barbarensis
 Sorbeoconcha - Ranellidae
"Ranella (Priene) oregonensis" = Fusitriton oregonensis
"Ranella (Priene) oregonensis" = Fusitriton oregonensis Redfield 1846 triton shell
 Sorbeoconcha - Naticidae
"Polinices (Neverita) reclusianus" = Glossaulax reclusiana
"Polinices (Neverita) reclusianus" = Glossaulax reclusiana Deshayes 1839 moon snail
 Sorbeoconcha - Procerithiidae
"Bittium (Semibittium) rugatum" = Lirobittium rugatum, "Bittium (Lirobittium) catalinense" = Lirobittium catalinensis
"Bittium (Semibittium) rugatum" = Lirobittium rugatum Carpenter 1866 snail
"Bittium (Lirobittium) catalinense" = Lirobittium catalinensis Bartsch 1907 snail
 Opisthobranchia - Retusidae
 Opisthobranchia - Cylichnidae
Cylichna alba Brown 1827 snail
 Heterostropha - Pyramidellidae
"Odostomia (Evalea) gravida" = Brachystomia gravida, "Turbonilla (Mormula) tridentata" = Paramormula tridentata
"Odostomia (Evalea) gravida" = Brachystomia gravida Gould 1853 snail
questionable occurrence?
"Turbonilla (Mormula) tridentata" = Paramormula tridentata Carpenter 1865 snail
Bivalvia
 Nuculanida - Nuculanidae
"Nuculana taphria" = Saccella taphria
"Nuculana taphria" = Saccella taphria Dall 1896 pointed nut clam
 Carditida - Carditidae
"Cardita ventricosa" = Coanicardita ventricosa, "Cardita barbarensis" = Hippocampocardia barbarensis
"Cardita ventricosa" = Coanicardita ventricosa Gould 1850 clam
"Cardita barbarensis" = Hippocampocardia barbarensis Stearns 1890 clam
 Lucinida - Lucinidae
"Lucina tenuisculpta" = Parvilucina tenuisculpta
"Lucina tenuisculpta" = Parvilucina tenuisculpta Carpenter 1864 clam
 Hiatellida - Hiatellidae
"Panope generosa" = Panopea generosa
"Panope generosa" = Panopea generosa Gould 1850 clam
 Solenida - Solenidae
Solen sicarius Gould 1850 clam
 Pholadida - Teredinidae
Teredo sp. Linnaeus 1758 clam
 Cardiida - Veneridae
Compsomyax subdiaphana Carpenter 1864 venus clam
"Psephidia cymata" = Nutricola cymata Dall 1913 venus clam
questionable occurrence
 Cardiida - Mactridae
Mactra sp., "Mactra (Spisula) hemphilli" = Mactromeris hemphillii
Mactra sp. Linnaeus 1767 clam
"Mactra (Spisula) hemphilli" = Mactromeris hemphillii Dall 1894 clam
questionable occurrence
 Cardiida - Chamidae
Chama arcana1, "Pseudochama exogyra" = Chama exogyra
Chama arcana1 Bernard 1976 jewel box
"Pseudochama exogyra" = Chama exogyra Conrad 1837 jewel box
 Cardiida - Cardiidae
Laevicardium (Nemocardium) centifilosum, "Laevicardium (Trachycardium) quadragenarium" = Dallocardia quadragenarium
"Laevicardium (Trachycardium) quadragenarium" = Dallocardia quadragenarium Conrad 1837 cockle
 Pectinida - Pectinoidae
"Pecten (Janira) bellus" = Euvola bella, "Pecten (Pecten) hastatus" = Chlamys hastata
"Pecten (Janira) bellus" = Euvola bella Conrad 1856 scallop
"Pecten (Pecten) hastatus" = Chlamys hastata Sowerby 1842 scallop
as Pecten (Pecten) hastatus hericius
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium neohexagonum Sharp and Pilsbry 1897 tusk shell
Gymnolaemata
 Cheilostomata - Cellariidae