Where: Contra Costa County, California (37.8° N, 121.9° W: paleocoordinates 37.3° N, 110.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tejon Group, Bartonian (41.3 - 38.0 Ma)

• lower Tejon

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: R. E. Dickerson. 1916. Stratigraphy and fauna of the Tejon Eocene of California. University of California Publications Bulletin of the Department of Geology 9(17):363-524 [J. Marcot/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 122295: authorized by Wolfgang Kiessling, entered by Uta Merkel on 21.12.2011, edited by Mark Uhen, Jonathan Marcot and Austin Hendy

Creative Commons license: CC BY (attribution)