Also known as USGS# 18993; S34
Where: Orange County, California (33.8° N, 117.7° W: paleocoordinates 34.0° N, 104.5° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Santiago Formation, Middle Eocene (48.6 - 37.2 Ma)
• LITHOSTRATIGRAPHIC RELATIONS: From the Santiago Fm, which overlies the Silverado Fm (Paleocene) and is overlain by the Sespe and Vaqueros Fms (Eocene-E. Miocene). AGE: Middle Eocene, on the basis of molluscan and foraminiferal biostratigraphy; from the Ulatisian Stage of Mallory (1959), on the basis of benthic forams and the Discosaster sublodoensis nannoplankton zone (Poore, 1976).
• bed-level stratigraphic resolution
Environment/lithology: coastal; lithified, pebbly sandstone and lithified, concretionary siltstone
Size class: macrofossils
Collected by Schoelhammer; reposited in the USGS
Collection methods: surface (in situ),
• COLLECTORS: J.E. Schoelhammer. REPOSITORY: USGS.
Primary reference: J. E. Schoellhamer, J. G. Vedder, R. F. Yerkes and D. M. Kinney. 1981. Geology of the Northern Santa Ana Mountains, California. United States Geological Survey Professional Paper 420(D):1-109 [J. Alroy/J. Alroy/R. McClees-Funinan]more details
Purpose of describing collection: biostratigraphic analysis
PaleoDB collection 94821: authorized by Austin Hendy, entered by Austin Hendy on 29.03.2010
Creative Commons license: CC BY (attribution)