South Oak Ridge area [Vaqueros Fm] (Miocene of the United States)

Where: Ventura County, California (34.3° N, 118.8° W: paleocoordinates 33.4° N, 112.6° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Vaqueros Formation, Early/Lower Miocene (23.0 - 16.0 Ma)

• LITHOSTRATIGRAPHY: From the Vaqueros Fm, which overlies the the Sespe Fm (Eocene-Miocene). AGE: Early Miocene, presumably on the basis of molluscan and foraminiferal biostratigraphy. STRATIGRAPHIC POSITION: From the Turritella inezana zone in the upper part of the Vaqueros Fm.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; argillaceous sandstone

• ENVIRONMENT: From rather shallow siliciclastic marine facies on the basis of faunal composition.
• SPECIFIC LITHOLOGY: Massive argillaceous sandstones. LITHIFICATION: Unknown.

Size class: macrofossils

Collected by Corey; reposited in the UCMP

Collection methods: surface (in situ),

• COLLECTOR: Corey. REPOSITORY: Not stated in text, but probably UCMP.

Primary reference: J. A. Cushman and L. W. Leroy. 1938. A microfauna from the Vaqueros Formation, Lower Miocene, Simi Valley, Ventura County, California. Journal of Paleontology 12(2):117-126 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 91374: authorized by Austin Hendy, entered by Austin Hendy on 16.09.2009

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for macrofossils; microfossils known to be present. NOMENCLATURE: Authoritative publication, with somewhat antiquated nomenclature, but with species-resolution identifications.
Haplophragmiina
 Lituolacea - Lituolidae
Rotaliina
 Buliminacea - Buliminidae
 Discorbacea - Bagginidae
 Nonionacea - Nonionidae
 Globigerinaceae - Globigerinidae
Globigerina sp. d'Orbigny 1826
 Textulariina - Verneuilinidae
Lagenina
 Nodosariacea - Nodosariidae
Lagena substriata Williamson 1848
Lagena sulcata Williamson 1848
"Lagena clavata" = Hyalinonetrion clavatum Millett 1901
Dentalina cf. pauperata d'Orbigny 1846
Robulus mayi Cushman and Parker 1931
Robulus nikobarensis Schwager 1866
Maxillopoda
 Sessilia - Balanidae
Balanus sp. Da Costa 1778 barnacle
Bivalvia
 Arcida - Arcidae
 Pectinida - Pectinoidae
Pecten sespeensis, "Pecten andersoni" = Aequipecten andersoni, "Pecten magnolia" = Pecten (Lyropecten) magnolia
Pecten sespeensis Arnold 1906 scallop
"Pecten andersoni" = Aequipecten andersoni Arnold 1906 scallop
"Pecten magnolia" = Pecten (Lyropecten) magnolia Conrad 1857 scallop
 Pectinida - Anomiidae
Anomia vaquerosensis Loel and Corey 1932 jingle
 Ostreida - Gryphaeidae
"Ostrea eldridgei" = Pycnodonte (Crenostrea) eldridgei
"Ostrea eldridgei" = Pycnodonte (Crenostrea) eldridgei Arnold 1907 oyster
 Ostreida - Ostreidae
"Ostrea vaquerosensis" = Crassostrea vaquerosensis
"Ostrea vaquerosensis" = Crassostrea vaquerosensis Loel and Corey 1932 oyster
 Mytilida - Mytilidae
Modiolus ynezianus Arnold 1908 mussel
 Cardiida - Mactridae
"Mactra cf. sectoris" = Mactromeris sectoris
"Mactra cf. sectoris" = Mactromeris sectoris Anderson and Martin 1914 clam
 Cardiida - Ungulinidae
"Diplodonta harfordi" = Felaniella (Felaniella) harfordi Anderson 1905 clam
Diplodonta cf. orbella Gould 1851 clam
 Cardiida - Veneridae
"Chione temblorensis" = Chione (Chionopsis) temblorensis Anderson 1905 venus clam
Dosinia cf. merriami Clark 1915 venus clam
Transennella cf. joaquinensis Anderson and Martin 1914 venus clam
"Clementia pertenuis" = Clementia (Egesta) pertenuis Gabb 1864 venus clam
 Cardiida - Tellinidae
Macoma nasuta Conrad 1837 tellin clam
"Macoma arctata" = Macoma (Psammacoma) arctata Conrad 1849 tellin clam
 Cardiida - Cardiidae
"Cardium vaquerosensis" = Trachycardium (Trachycardium) vaquerosensis Arnold 1908 cockle
 Lucinida - Lucinidae
Lucina wattsi, "Phacoides sanctaecrucis" = Miltha (Miltha) sanctaecrucis, "Phacoides acutilineatus" = Lucinoma acutilineata
Lucina wattsi Loel and Corey 1932 clam
"Phacoides sanctaecrucis" = Miltha (Miltha) sanctaecrucis Arnold 1910 clam
"Phacoides acutilineatus" = Lucinoma acutilineata Conrad 1849 clam
Gastropoda
 Neogastropoda - Olividae
"Olivella pedroana" = Olivella (Callianax) pedroana
"Olivella pedroana" = Olivella (Callianax) pedroana Conrad 1856 olive snail
 Neogastropoda - Nassariidae
Nassarius sp. Duméril 1806 snail
 Neogastropoda - Muricidae
Rapana vaquerosensis Arnold 1908 murex snail
 Neogastropoda - Terebridae
Terebra santana Loel and Corey 1932 auger snail
 Naticoidea - Naticidae
"Polinices recluzianus" = Glossaulax reclusiana
"Polinices recluzianus" = Glossaulax reclusiana Deshayes 1841 moon snail
 Calyptraeoidea - Calyptraeidae
Calyptraea inornata slipper shell
Calyptraea filosa Gabb 1866 slipper shell
Crepidula diminutiva Loel and Corey 1932 slipper shell
 Sorbeoconcha - Turritellidae
Turritella inezana turret shell
 Heterostropha - Acteonidae
Acteon sp. Montfort 1810 snail
Bryozoa
  -
Bryozoa indet. Ehrenberg 1831
Mammalia
 Carnivora - Pinnipedia
 Cetacea -
Cetacea indet. Brisson 1762 whale
Echinoidea
 Clypeasteroida - Scutellidae
Scutella fairbanksi Arnold 1907 sand dollar