UCMP loc. A-527, San Joaquin Hills (Miocene of the United States)

Where: Orange County, California (33.5° N, 117.8° 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 just below the contact with the Temblor Fm, basal 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. I. Paleontology. University of California Publications, Bulletin of the Department of Geological Sciences 22(3):31-410 [A. Hendy/A. Hendy/J. Marcot]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 71215: authorized by Austin Hendy, entered by Austin Hendy on 21.04.2007, edited by Jonathan Marcot

Creative Commons license: CC0 (CC0)

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.
Sedentaria
 Sabellida - Serpulidae
"Serpula coreyi" = Serpula careyi
"Serpula coreyi" = Serpula careyi Wiedey 1928
Gastropoda
 Neotaenioglossa - Calyptraeidae
Calyptraea filosa Gabb 1866 Chinese hat snail
Crepidula diminutiva n. sp. Loel and Corey 1932 slipper shell
 Sorbeoconcha - Naticidae
"Polinices (Neverita) recluzianus andersoni" = Natica (Neverita) recluziana andersoni
"Polinices (Neverita) recluzianus andersoni" = Natica (Neverita) recluziana andersoni Clark 1918 Recluz's moon snail
 Neogastropoda - Siphonaliidae
"Bruclarkia barkerianum santacruzanum" = Bruclarkia barkeriana
"Bruclarkia barkerianum santacruzanum" = Bruclarkia barkeriana Cooper 1894 snail
 Neogastropoda - Muricidae
"Rapana vaquerosensis imperialis" = Califrapana vaquerosensis
"Rapana vaquerosensis imperialis" = Califrapana vaquerosensis Arnold 1908 murex snail
 Cerithioidea - Cerithiidae
"Cerithium topangensis" = Bittium topangensis
"Cerithium topangensis" = Bittium topangensis Arnold 1907 cerith snail
 Cerithioidea - Turritellidae
Turritella temblorensis Wiedey 1928 turret shell
Turritella inezana Conrad 1857 turret shell
COMMENTS: Also includes multiple subspecies
Turritella ocoyana Conrad 1855 turret shell
COMMENTS: Also includes multiple subspecies
 Trochoidea - Turbinidae
"Astraea morani n. sp." = Astraea (Pomaulax) morani
"Astraea morani n. sp." = Astraea (Pomaulax) morani Loel and Corey 1932 snail
 Opisthobranchiata - Cylichnidae
Scaphander jugularis Conrad 1855 snail
Bivalvia
 Arcida - Arcidae
"Arca (Barbatia) strongi n. sp." = Anadara (Anadara) strongi
"Arca (Barbatia) strongi n. sp." = Anadara (Anadara) strongi Loel and Corey 1932 ark
 Pectinida - Pectinoidae
"Pecten (Plagioctenium) andersoni subandersoni" = Pacipecten andersoni subandersoni, "Pecten (Lyropecten) perrini" = Vertipecten perrini, "Pecten (Lyropecten) bowersi" = Vertipecten bowersi, "Pecten (Lyropecten) miguelensis" = Lyropecten miguelensis, "Pecten (Lyropecten) miguelensis submiguelensis" = Lyropecten pretiosus
"Pecten (Plagioctenium) andersoni subandersoni" = Pacipecten andersoni subandersoni Loel and Corey 1932 scallop
"Pecten (Lyropecten) perrini" = Vertipecten perrini Arnold 1906 scallop
"Pecten (Lyropecten) bowersi" = Vertipecten bowersi Arnold 1906 scallop
"Pecten (Lyropecten) miguelensis" = Lyropecten miguelensis Arnold 1906 scallop
"Pecten (Lyropecten) miguelensis submiguelensis" = Lyropecten pretiosus Hertlein 1925 scallop
 Ostreida - Gryphaeidae
"Ostrea eldridgei" = Crenostrea eldridgei
"Ostrea eldridgei" = Crenostrea eldridgei Arnold 1907 oyster
 Ostreida - Pteriidae
Pteria hertleini Wiedey 1928 pearl oyster
 Lucinida - Lucinidae
"Phacoides (Lucinoma) acutilineatus" = Lucinoma acutilineata, "Phacoides (Lucinisca) nuttallii" = Lucinisca nuttalli
"Phacoides (Lucinoma) acutilineatus" = Lucinoma acutilineata Conrad 1849 clam
"Phacoides (Lucinisca) nuttallii" = Lucinisca nuttalli Conrad 1837 Nuttall's lucine
COMMENTS: Mispelt P. (L.) nutallii
 Cardiida - Cardiidae
"Cardium (Trachycardium) woodringi" = Dallocardia woodringi
"Cardium (Trachycardium) woodringi" = Dallocardia woodringi Loel and Corey 1932 cockle
 Cardiida - Solecurtidae
Tagelus clarki Loel and Corey 1932 clam
 Cardiida - Tellinidae
Macoma nasuta Conrad 1837 bent-nose clam
 Cardiida - Mactridae
"Mactra cf. sectoris" = Mactromeris sectoris
"Mactra cf. sectoris" = Mactromeris sectoris Anderson and Martin 1914 clam
 Cardiida - Veneridae
Clementia (Egesta) pertenuis Gabb 1864 venus clam
"Chione aff. richthofeni" = Chione (Chionopsis) richthofeni Hertlein and Jordan 1927 venus clam
 Cardiida - Ungulinidae
Diplodonta cf. orbella Gould 1851 orb diplodon
Gymnolaemata
 Cheilostomata -
Cheilostomata indet. Busk 1859
COMMENTS: Listed as Cheilostomatid sps.
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