UCMP loc. A-543, San Joaquin Hills (Miocene of the United States)

Where: Orange County, California (33.6° N, 117.8° W: paleocoordinates 32.6° N, 111.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• STRATIGRAPHIC RELATIONS: From the Vaqueros Fm, which unconformably overlies the Eocene Tempetate/Martinez Fm, and is overlain by the Temblor Fm (Middle Miocene). THICKNESS: From bed within unit which locally reaches 500 ft in thickness. AGE: Early Miocene on the basis of molluscan biostratigraphy. STRATIGRAPHIC POSITION: From the upper part of the Vaqueros Fm.

• bed-level stratigraphic resolution

Environment/lithology: coastal; poorly lithified, silty sandstone

• ENVIRONMENT: From rather shallow siliciclastic marine facies on the basis of faunal composition.
• SPECIFIC LITHOLOGY: Light colored sandstones and silty sandstones. LITHIFICATION: Poorly lithified on the basis of facies description of adjacent strata and age.

Size class: macrofossils

Reposited in the UCMP

Collection methods: surface (in situ),

• COLLECTOR: W. Loel, W. H. Corey, and A. M. Strong (c. late 1910-20's). REPOSITORY: University of California, Berkeley (UCNMP).

Primary reference: W. Loel and W. H. Corey. 1932. The Vaqueros Formation, Lower Miocene of California (Part 1). University of California Publications, Bulletin of the Department of Geological Sciences 22(3):31-410 [A. Hendy/A. Hendy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 71223: authorized by Austin Hendy, entered by Austin Hendy on 21.04.2007

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for bivalvia and gastropoda, with annelida, bryozoa, crustacea, and pisces also listed. NOMENCLATURE: Antiquated nomenclature, but from authoritative publication with consistent use of species and subgenus-level assignments.
Gastropoda
 Neotaenioglossa - Calyptraeidae
Crepidula diminutiva n. sp. Loel and Corey 1932 slipper shell
Calyptraea filosa Gabb 1866 slipper shell
Calyptraea inornata Gabb 1869 slipper shell
Calyptraea costellata Conrad 1857 slipper shell
 Cerithioidea - Cerithiidae
"Terebra santana n. sp." = Clavocerithium santana
"Terebra santana n. sp." = Clavocerithium santana Loel and Corey 1932 cerith snail
 Cerithioidea - Turritellidae
Turritella temblorensis Wiedey 1928 turret shell
Turritella inezana Conrad 1857 turret shell
COMMENTS: Includes multiple subspecies
Turritella ocoyana Conrad 1855 turret shell
 Neogastropoda - Olividae
Olivella santana n. sp. Loel and Corey 1932 olive snail
 Neogastropoda - Siphonaliidae
Bruclarkia barkerium snail
SUBSPECIES: B. barkerium santacruzanum
 Neogastropoda - Muricidae
"Rapana vaquerosensis" = Califrapana vaquerosensis, "Purpura milicentana n. sp." = Ocenebra milicentana, ? Purpura topangensis
"Rapana vaquerosensis" = Califrapana vaquerosensis Arnold 1908 murex snail
SUBSPECIES: R. vaquerosensis imperialis
"Purpura milicentana n. sp." = Ocenebra milicentana Loel and Corey 1932 murex snail
? Purpura topangensis Arnold 1907 murex snail
 Neogastropoda - Cancellariidae
"Cancellaria dalliana" = Cancellaria (Euclia) dalliana
"Cancellaria dalliana" = Cancellaria (Euclia) dalliana Anderson 1905 snail
 Sorbeoconcha - Naticidae
"Polinices recluzianus" = Glossaulax reclusiana
"Polinices recluzianus" = Glossaulax reclusiana Deshayes 1839 moon snail
SUBSPECIES: P. recluzianus andersoni
 Sorbeoconcha - Hipponicidae
Hipponix sp. Defrance 1819 hoof shell
 Opisthobranchia - Cylichnidae
Scaphander jugularis Conrad 1855 snail
Bivalvia
 Arcida - Arcidae
"Arca (Anadara) santana n. sp." = Anadara santana, "Arca (Barbatia) strongi n. sp." = Anadara (Anadara) strongi
"Arca (Anadara) santana n. sp." = Anadara santana Loel and Corey 1932 ark
"Arca (Barbatia) strongi n. sp." = Anadara (Anadara) strongi Loel and Corey 1932 ark
 Pectinida - Anomiidae
Anomia vaquerosensis n. sp. Loel and Corey 1932 jingle
 Pectinida - Pectinoidae
"Pecten (Chlamys) sespeensis" = Chlamys sespeensis, "Pecten (Lyropecten) magnolia" = Macrochlamis magnolia
"Pecten (Chlamys) sespeensis" = Chlamys sespeensis Arnold 1906 scallop
"Pecten (Lyropecten) magnolia" = Macrochlamis magnolia Conrad 1857 scallop
 Ostreida - Gryphaeidae
"Ostrea eldridgei" = Crenostrea eldridgei
"Ostrea eldridgei" = Crenostrea eldridgei Arnold 1907 oyster
SUBSPECIES: O. eldridgei ynezana
 Ostreida - Ostreidae
"Ostrea vaquerosensis" = Crassostrea vaquerosensis, "Ostrea freudenbergi" = Striostrea freudenbergi, "Ostrea vespertina" = Dendostrea vespertina
"Ostrea vaquerosensis" = Crassostrea vaquerosensis Loel and Corey 1932 oyster
"Ostrea freudenbergi" = Striostrea freudenbergi Hertlein and Jordan 1927 oyster
"Ostrea vespertina" = Dendostrea vespertina Conrad 1855 oyster
 Mytilida - Mytilidae
"Mytilus expansus" = Crenomytilus expansus, Lithophaga sp., "Modiolus ynezianus" = Modiolus (Modiolus) ynezianus
"Mytilus expansus" = Crenomytilus expansus Arnold 1907 mussel
Lithophaga sp. Röding 1798 mussel
"Modiolus ynezianus" = Modiolus (Modiolus) ynezianus Arnold 1908 mussel
COMMENTS: Includes M. ynezianus laguanus
 Lucinida - Lucinidae
"Phacoides (Lucinoma) acutilineatus" = Lucinoma acutilineata, "Phacoides (Lucinisca) cf. nuttallii" = Lucinisca nuttalli
"Phacoides (Lucinoma) acutilineatus" = Lucinoma acutilineata Conrad 1849 clam
"Phacoides (Lucinisca) cf. nuttallii" = Lucinisca nuttalli Conrad 1837 clam
COMMENTS: Mispelt: P. (L.) cf. nutallii
 Pholadida - Teredinidae
Teredo sp. Linnaeus 1758 clam
 Cardiida - Veneridae
Saxidomus vaquerosensis Arnold 1909 venus clam
Clementia (Egesta) pertenius venus clam
SUBSPECIES: C. (E.) pertenuis conradiana
Tivela (Pachydesma) inezana Conrad 1856 venus clam
"Chione richthofeni" = Chione (Chionopsis) richthofeni Hertlein and Jordan 1927 venus clam
"Chione aff. richthofeni" = Chione (Chionopsis) richthofeni Hertlein and Jordan 1927 venus clam
Dosinia (Dosinidia) margaritana Wiedey 1928 venus clam
SUBSPECIES: D. (D.) margaritana projecta
Dosinia (Dosinella) merriami Clark 1915 venus clam
Dosinia santana Loel and Corey 1932 venus clam
 Cardiida - Ungulinidae
Diplodonta cf. orbella Gould 1851 clam
 Cardiida - Mactridae
"Mactra cf. sectoris" = Mactromeris sectoris
"Mactra cf. sectoris" = Mactromeris sectoris Anderson and Martin 1914 clam
 Cardiida - Cardiidae
"Cardium (Trachycardium) vaquerosensis" = Dallocardia vaquerosense
"Cardium (Trachycardium) vaquerosensis" = Dallocardia vaquerosense Arnold 1908 cockle
 Cardiida - Donacidae
? Donax sp. Linnaeus 1758 clam
 Cardiida - Tellinidae
Macoma nasuta Conrad 1837 tellin clam
 Solenida - Solenidae
"Solen gravidus" = Solena (Plectosolen) gravidus
"Solen gravidus" = Solena (Plectosolen) gravidus Clark 1918 clam
 Hiatellida - Hiatellidae
"Panope cf. generosa" = Panopea generosa
"Panope cf. generosa" = Panopea generosa Gould 1850 clam
Gymnolaemata
 Cheilostomata -
Polychaeta
 Sabellida - Serpulidae
"Serpula cf. coreyi" = Serpula careyi
"Serpula cf. coreyi" = Serpula careyi Wiedey 1928
Thecostraca
 Balanomorpha - Balanidae
Balanus sp. Da Costa 1778 barnacle
Echinoidea
 Clypeasteroida - Echinarachniidae
"? Scutella norrisi" = Vaquerosella coreyi, "? Scutella vaquerosensis" = Vaquerosella vaquerosensis
"? Scutella norrisi" = Vaquerosella coreyi Durham 1955 sand dollar
"? Scutella vaquerosensis" = Vaquerosella vaquerosensis Kew 1920 sand dollar
 Clypeasteroida - Scutellidae