UCMP loc. A-539, San Joaquin Hills: Early/Lower Miocene, California

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Neotaenioglossa - Calyptraeidae
Calyptraea filosa (Gabb 1866)
Gastropoda - Potamididae
Potamides sespeensis Loel and Corey 1932
Gastropoda - Neogastropoda - Muricidae
Rapana vaquerosensis (Arnold 1908)
recombined as Califrapana vaquerosensis
Gastropoda - Naticidae
Polinices recluzianus (Deshayes 1839)
recombined as Glossaulax reclusiana
SUBSPECIES: P. recluzianus andersoni
Gastropoda - Opisthobranchia - Cylichnidae
Scaphander jugularis (Conrad 1855)
Bivalvia - Cardiida - Veneridae
Chione cf. richthofeni Hertlein and Jordan 1927
recombined as Chione (Chionopsis) richthofeni
Clementia (Egesta) pertenuis (Gabb 1864)
original and current combination Dosinia pertenuis
SUBSPECIES: C. (E.) pertenuis conradiana
Bivalvia - Cardiida - Cardiidae
Cardium (Trachycardium) vaquerosensis Arnold 1908
recombined as Dallocardia vaquerosense
Bivalvia - Arcida - Arcidae
Arca (Anadara) santana n. sp. Loel and Corey 1932
recombined as Anadara santana
Bivalvia - Ostreida - Pteriidae
Pteria hertleini Wiedey 1928
Bivalvia - Ostreida - Gryphaeidae
Ostrea eldridgei Arnold 1907
recombined as Crenostrea eldridgei
Bivalvia - Pectinida - Anomiidae
Anomia vaquerosensis n. sp. Loel and Corey 1932
Bivalvia - Pectinida - Pectinidae
Pecten (Lyropecten) miguelensis Arnold 1906
recombined as Lyropecten miguelensis
COMMENTS: Includes P. (L.) miguelensis submiguelensis
Thecostraca - Balanomorpha - Balanidae
Balanus sp. Da Costa 1778
see common names

Geography
Country:United States State/province:California County:Orange
Coordinates: 33.5° North, 117.8° West (view map)
Paleocoordinates:32.6° North, 111.5° West
Basis of coordinate:based on nearby landmark
Altitude:500 feet
Geographic resolution:outcrop
Time
Period:Neogene Epoch:Miocene
10 m.y. bin:Cenozoic 5
Key time interval:Early/Lower Miocene
Age range of interval:23.03000 - 15.98000 m.y. ago
Stratigraphy
Formation:Vaqueros
Stratigraphic resolution:bed
Stratigraphy comments: 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.
Lithology and environment
Primary lithology: poorly lithified silty sandstone
Includes fossils?Y
Lithology description: SPECIFIC LITHOLOGY: Light colored sandstones and silty sandstones. LITHIFICATION: Poorly lithified on the basis of facies description of adjacent strata and age.
Environment:coastal indet.
Geology comments: ENVIRONMENT: From rather shallow siliciclastic marine facies on the basis of faunal composition.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:surface (in situ),field collection
Reason for describing collection:biostratigraphic analysis
Museum repositories:UCMP
Collection method comments: COLLECTOR: W. Loel, W. H. Corey, and A. M. Strong (c. late 1910-20's). REPOSITORY: University of California, Berkeley (UCNMP).
Taxonomic list comments: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.
Metadata
Database number:71222
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:J. Marcot Research group:marine invertebrate
Created:2007-04-21 12:38:49 Last modified:2021-07-31 14:26:05
Access level:the public Released:2007-04-21 12:38:49
Creative Commons license:CC BY
Reference information

Primary reference:
23850. 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]