Also known as USGS# 18993; S34

Where: Orange County, California (33.8° N, 117.7° W: paleocoordinates 34.5° N, 103.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Santiago Formation, Lutetian (47.8 - 41.3 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)