UC-A534 - Vaqueros Fm (Miocene of the United States)

Where: Orange County, California (33.7° N, 117.8° W: paleocoordinates 32.7° N, 111.5° 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 Turritella inezana (ss) bed, in 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 71217: 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.
 Sessilia - Balanidae
Balanus sp. Da Costa 1778 barnacle
 Pectinida - Anomiidae
Anomia vaquerosensis n. sp. Loel and Corey 1932 jingle
 Ostreida - Gryphaeidae
"Ostrea eldridgei" = Pycnodonte (Crenostrea) eldridgei
"Ostrea eldridgei" = Pycnodonte (Crenostrea) eldridgei Arnold 1907 oyster
COMMENTS: Includes O. eldridgei ynezana
 Ostreida - Ostreidae
"Ostrea vespertina" = Dendostrea vespertina, "Ostrea vaquerosensis" = Crassostrea vaquerosensis
"Ostrea vespertina" = Dendostrea vespertina Conrad 1854 oyster
"Ostrea vaquerosensis" = Crassostrea vaquerosensis Loel and Corey 1932 oyster
 Cardiida - Mactridae
"Mactra cf. sectoris" = Mactromeris sectoris
"Mactra cf. sectoris" = Mactromeris sectoris Anderson and Martin 1914 clam
 Cardiida - Ungulinidae
Diplodonta cf. orbella Gould 1851 clam
 Cardiida - Veneridae
"Chione richthofeni" = Chione (Chionopsis) richthofeni, "Dosinia (Dosinidia) mathewsoni" = Dosinia, Dosinia (Dosinidia) margaritana, Petricola sp.
"Chione richthofeni" = Chione (Chionopsis) richthofeni Hertlein and Jordan 1927 venus clam
"Dosinia (Dosinidia) mathewsoni" = Dosinia venus clam
Dosinia (Dosinidia) margaritana Wiedey 1928 venus clam
SUBSPECIES: D. (Dosinidia) margaritana projecta
Petricola sp. Lamarck 1801 venus clam
 Cardiida - Solecurtidae
Tagelus clarki n. sp. Loel and Corey 1932 clam
 Cardiida - Tellinidae
Macoma nasuta Conrad 1837 tellin clam
"Tellina arctata" = Macoma (Psammacoma) arctata Conrad 1849 tellin clam
 Cardiida - Cardiidae
"Cardium (Trachycardium) woodringi" = Trachycardium (Trachycardium) woodringi, "Cardium (Trachycardium) vaquerosensis" = Trachycardium (Trachycardium) vaquerosensis
"Cardium (Trachycardium) woodringi" = Trachycardium (Trachycardium) woodringi Lowel and Cory 1932 cockle
"Cardium (Trachycardium) vaquerosensis" = Trachycardium (Trachycardium) vaquerosensis Arnold 1908 cockle
 Hiatellida - Hiatellidae
"Panope cf. generosa" = Panopea abrupta
"Panope cf. generosa" = Panopea abrupta Conrad 1849 clam
 Lucinida - Lucinidae
"Phacoides (Here) richthofeni" = Here excavata, "Phacoides (Miltha) sanctaecrucis" = Miltha (Miltha) sanctaecrucis, "Phacoides (Lucinoma) acutilineatus" = Lucinoma acutilineata
"Phacoides (Here) richthofeni" = Here excavata Carpenter 1857 clam
"Phacoides (Miltha) sanctaecrucis" = Miltha (Miltha) sanctaecrucis Arnold 1910 clam
"Phacoides (Lucinoma) acutilineatus" = Lucinoma acutilineata Conrad 1849 clam
 Neogastropoda - Olividae
Olivella santana n. sp. Loel and Corey 1932 olive snail
 Naticoidea - Naticidae
"Polinices recluzianus" = Glossaulax reclusiana
"Polinices recluzianus" = Glossaulax reclusiana Deshayes 1839 moon snail
SUBSPECIES: P. recluzianus andersoni
 Calyptraeoidea - Calyptraeidae
Calyptraea costellata slipper shell
Calyptraea inornata slipper shell
Calyptraea dalliana slipper shell
 Sorbeoconcha - Turritellidae
Turritella inezana turret shell
COMMENTS: Includes subspecies T. inezana altacorona
 Clypeasteroida - Scutellidae