Where: Contra Costa County, California (38.0° N, 122.1° W: paleocoordinates 42.4° N, 101.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Vine Hill Formation, Selandian (61.6 - 59.2 Ma)

• STRATIGRAPHIC RELATIONS: From the "Martinez", now mapped as Vine Hill Sandstone, lower member. AGE: Paleocene, according to Miller (1947). The lower Vine Hill Sandstone includes the Selandian Turritella peninsularis Zone of Soul (1983) and the middle Vine Hill includes the Selandian Turritella infragranulata pachecoensis Zone. Bukry et al. (1998) found calcareous nannofossil zones CP5, CP10, and CP11 in the upper Vine Hill Sandstone (latest Selandian-Ypresian), implying an age no younger than Selandian for the lower Vine Hill. McDougall (2007) assigned the Vine Hill to the Ynezian benthic foraminferal zone, correlated with planktonic zone P4 and nannofossil zones CP5-CP7, of Selandian-Thanetian age. STRATIGRAPHIC POSITION: From unknown position within section.

• group of beds-level stratigraphic resolution

Environment/lithology: coastal; lithified siliciclastic sediments

Size class: macrofossils

Preservation: cast, mold/impression

Reposited in the UCMP

• COLLECTOR: Unknown collector. REPOSITORY: University of California.

Primary reference: R. E. Dickerson. 1914. Fauna of the Martinez Eocene of California. Bulletin of the Department of Geology, University of California 6:61-180 [P. Holroyd/P. Holroyd/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 81800: authorized by Austin Hendy, entered by Austin Hendy on 16.07.2008, edited by Matthew Clapham, Kristina Okamoto, Patricia Holroyd and Jonathan Marcot

Creative Commons license: CC BY (attribution)