UC-A543 - Vaqueros Fm (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.
 Sessilia - Balanidae
Balanus sp. Da Costa 1778 barnacle
 Sabellida - Serpulidae
 Arcida - Arcidae
Arca (Barbatia) strongi n. sp. Loel and Corey 1932 clam
Arca (Anadara) santana n. sp. Loel and Corey 1932 ark
 Pectinida - Pectinoidae
Pecten (Chlamys) sespeensis Arnold 1906 scallop
Pecten (Lyropecten) magnolia Conrad 1857 scallop
 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
SUBSPECIES: O. eldridgei ynezana
 Ostreida - Ostreidae
"Ostrea freudenbergi" = Striostrea freudenbergi, "Ostrea vespertina" = Dendostrea vespertina, "Ostrea vaquerosensis" = Crassostrea vaquerosensis
"Ostrea freudenbergi" = Striostrea freudenbergi Hertlein and Jordan 1927 oyster
"Ostrea vespertina" = Dendostrea vespertina Conrad 1855 oyster
"Ostrea vaquerosensis" = Crassostrea vaquerosensis Loel and Corey 1932 oyster
 Mytilida - Mytilidae
"Mytilus expansus" = Crenomytilus expansus Arnold 1907 mussel
Lithophaga sp. Röding 1798 mussel
Modiolus ynezianus Arnold 1908 mussel
COMMENTS: Includes M. ynezianus laguanus
 Pholadida - Teredinidae
Teredo sp. Linnaeus 1758 clam
 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 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
Saxidomus vaquerosensis Arnold 1909 venus clam
Tivela (Pachydesma) inezana Conrad 1849 venus clam
Clementia (Egesta) pertenius venus clam
SUBSPECIES: C. (E.) pertenuis conradiana
 Cardiida - Donacidae
? Donax sp. Linnaeus 1758 clam
 Cardiida - Tellinidae
Macoma nasuta Conrad 1837 tellin clam
 Cardiida - Cardiidae
"Cardium (Trachycardium) vaquerosensis" = Trachycardium (Trachycardium) vaquerosensis
"Cardium (Trachycardium) vaquerosensis" = Trachycardium (Trachycardium) vaquerosensis Arnold 1908 cockle
 Hiatellida - Hiatellidae
"Panope cf. generosa" = Panopea generosa
"Panope cf. generosa" = Panopea generosa Gould 1850 clam
 Solenida - Solenidae
"Solen gravidus" = Solena (Plectosolen) gravidus
"Solen gravidus" = Solena (Plectosolen) gravidus Clark 1918 clam
 Lucinida - Lucinidae
"Phacoides (Lucinisca) cf. nuttallii" = Lucinisca nuttalli, "Phacoides (Lucinoma) acutilineatus" = Lucinoma acutilineata
"Phacoides (Lucinisca) cf. nuttallii" = Lucinisca nuttalli Conrad 1837 clam
COMMENTS: Mispelt: P. (L.) cf. nutallii
"Phacoides (Lucinoma) acutilineatus" = Lucinoma acutilineata Conrad 1849 clam
  - Siphonaliidae
Bruclarkia barkerium snail
SUBSPECIES: B. barkerium santacruzanum
 Opisthobranchia - Cylichnidae
Scaphander jugularis Conrad 1855 snail
 Neogastropoda - Olividae
Olivella santana n. sp. Loel and Corey 1932 olive snail
 Neogastropoda - Cancellariidae
"Cancellaria dalliana" = Cancellaria (Euclia) dalliana
"Cancellaria dalliana" = Cancellaria (Euclia) dalliana Anderson 1905 snail
 Neogastropoda - Muricidae
Rapana vaquerosensis Arnold 1908 murex snail
SUBSPECIES: R. vaquerosensis imperialis
"Purpura milicentana n. sp." = Ocenebra milicentana Loel and Corey 1932 murex snail
 Neogastropoda - Terebridae
Terebra santana n. sp. Loel and Corey 1932 auger snail
 Vanikoroidea - Hipponicidae
Hipponix sp. Defrance 1819 hoof shell
 Naticoidea - Naticidae
"Polinices recluzianus" = Glossaulax reclusiana
"Polinices recluzianus" = Glossaulax reclusiana Deshayes 1841 moon snail
SUBSPECIES: P. recluzianus andersoni
 Calyptraeoidea - Calyptraeidae
Calyptraea costellata slipper shell
Calyptraea inornata slipper shell
Calyptraea filosa Gabb 1866 slipper shell
Crepidula diminutiva n. sp. Loel and Corey 1932 slipper shell
 Sorbeoconcha - Turritellidae
Turritella inezana turret shell
COMMENTS: Includes multiple subspecies
Turritella ocoyana Conrad 1855 turret shell
Turritella temblorensis Wiedey 1928 turret shell
 Cheilostomata -
 Clypeasteroida - Scutellidae
? Scutella vaquerosensis Kew 1920 sand dollar
 Clypeasteroida - Echinarachniidae
"? Scutella norrisi" = Echinarachnius norrisi
"? Scutella norrisi" = Echinarachnius norrisi Pack 1909 sand dollar