Where: Orange County, California (33.5° N, 117.8° W: paleocoordinates 32.6° 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 upper part of the Vaqueros Fm.
• bed-level stratigraphic resolution
Environment/lithology: coastal; poorly lithified, silty sandstone
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 71216: authorized by Austin Hendy, entered by Austin Hendy on 21.04.2007
Creative Commons license: CC BY (attribution)
Taxonomic list
Bivalvia | |
Diplodonta cf. orbella Gould 1851 clam | |
Clementia (Egesta) pertenuis, Tivela (Pachydesma) inezana, Dosinia (Dosinidia) margaritana, Dosinia (Dosinella) merriami
Clementia (Egesta) pertenuis Gabb 1864 venus clam
Tivela (Pachydesma) inezana Conrad 1856 venus clam
Dosinia (Dosinidia) margaritana Wiedey 1928 venus clam SUBSPECIES: D. (Dosinidia) margaritana projecta
Dosinia (Dosinella) merriami Clark 1915 venus clam | |
? Donax sp. Linnaeus 1758 clam | |
"Phacoides (Lucinoma) acutilineatus" = Lucinoma acutilineata, "Phacoides (Here) richthofeni" = Here excavata
"Phacoides (Lucinoma) acutilineatus" = Lucinoma acutilineata Conrad 1849 clam
"Phacoides (Here) richthofeni" = Here excavata Carpenter 1857 clam | |
"Pecten (Lyropecten) miguelensis" = Lyropecten miguelensis
"Pecten (Lyropecten) miguelensis" = Lyropecten miguelensis Arnold 1906 scallop SUBSPECIES: P. (L.) miguelensis submiguelensis
| |
Gastropoda | |
Crepidula cf. praerupta Conrad 1849 slipper shell | |
Turritella inezana Conrad 1857 turret shell | |
"Polinices recluzianus" = Glossaulax reclusiana
"Polinices recluzianus" = Glossaulax reclusiana Deshayes 1839 moon snail SUBSPECIES: P. recluzianus andersoni
| |
Thecostraca | |
Balanus sp. Da Costa 1778 barnacle |