UCMP Loc. 6128, Arroyo Trabuco, Santa Ana Mountains: Early/Lower Miocene, California

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Echinoidea - Clypeasteroida - Echinarachniidae
Scutella vaquerosensis Kew 1920
recombined as Vaquerosella vaquerosensis
Scutella fairbanksi Arnold 1907
recombined as Kewia fairbanksi
Gymnolaemata - Cheilostomata
Cheilostomata indet. Busk 1859
Gastropoda - Cerithiidae
Cerithium topangensis Arnold 1907
recombined as Bittium topangensis
Terebra santana n. sp. Loel and Corey 1932
recombined as Clavocerithium santana
Gastropoda - Turritellidae
Turritella inezana Conrad 1857
COMMENTS: Multiple subspecies
Gastropoda - Neotaenioglossa - Calyptraeidae
Crepidula diminutiva Loel and Corey 1932
Calyptraea inornata (Gabb 1869)
Calyptraea filosa (Gabb 1866)
Gastropoda - Naticidae
Polinices recluzianus (Deshayes 1839)
recombined as Glossaulax reclusiana
Gastropoda - Neogastropoda - Olividae
Olivella santana n. sp. Loel and Corey 1932
Gastropoda - Neogastropoda - Volutidae
Voluta sp. Linnaeaus 1758
Gastropoda - Neogastropoda - Muricidae
Purpura milicentana n. sp. Loel and Corey 1932
recombined as Ocenebra milicentana
Rapana vaquerosensis (Arnold 1908)
recombined as Califrapana vaquerosensis
COMMENTS: Includes R. vaquerosensis imperialis
Bivalvia - Pectinida - Pectinidae
Pecten (Lyropecten) bowersi Arnold 1906
recombined as Vertipecten bowersi
Pecten (Lyropecten) miguelensis Arnold 1906
recombined as Lyropecten miguelensis
SUBSPECIES: P. (L.) miguelensis submiguelensis
Bivalvia - Ostreida - Malleidae
Pedalion cf. panzana Loel and Corey 1932
recombined as Isognomon (Isognomon) panzana
Bivalvia - Ostreida - Gryphaeidae
Ostrea eldridgei Arnold 1907
recombined as Crenostrea eldridgei
Bivalvia - Arcida - Arcidae
Arca (Anadara) santana n. sp. Loel and Corey 1932
recombined as Anadara santana
Bivalvia - Cardiida - Cardiidae
Cardium (Trachycardium) vaquerosensis Arnold 1908
recombined as Dallocardia vaquerosense
Bivalvia - Cardiida - Tellinidae
Metis aff. alta (Conrad 1833)
original and current combination Tellina alta
Bivalvia - Cardiida - Psammobiidae
Sanguinolaria cf. toulai Hertlein and Jordan 1927
recombined as Nuttallia toulai
Bivalvia - Cardiida - Veneridae
Dosinia santana n. sp. Loel and Corey 1932
Chione aff. richthofeni Hertlein and Jordan 1927
recombined as Chione (Chionopsis) richthofeni
Saxidomus sp. Conrad 1837
Tivela (Pachydesma) inezana (Conrad 1856)
Clementia (Egesta) pertenuis (Gabb 1864)
original and current combination Dosinia pertenuis
SUBSPECIES: C. (E.) pertenuis
Bivalvia - Pholadida - Myidae
? Mya sp. Linnaeus 1758
Bivalvia - Lucinida - Lucinidae
Lucina wattsi Loel and Corey 1932
Thecostraca - Balanomorpha - Balanidae
Balanus sp. Da Costa 1778
see common names

Geography
Country:United States State/province:California County:Orange
Coordinates: 33.6° North, 117.6° West (view map)
Paleocoordinates:32.7° North, 111.4° West
Basis of coordinate:based on nearby landmark
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 Turritella inezana zone in the 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. H. Corey, C. D. Meserve, R. E. Dickerson, and W. S. W. Kew (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:71228
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:J. Marcot Research group:marine invertebrate
Created:2007-04-21 12:55:11 Last modified:2020-09-17 11:40:53
Access level:the public Released:2007-04-21 12:55:11
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]

Secondary references:

23853 R. Tate. 1889. The gastropods of the older Tertiary of Australia (Part 2). Transactions and Proceedings of the Royal Society of South Australia 11:116-171 [A. Hendy/A. Hendy]