Where: Ventura County, California (34.2° N, 118.8° W: paleocoordinates 38.0° N, 99.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Santa Susana Formation, Thanetian (59.2 - 56.0 Ma)

• Lower middle part of the formation, about 600 m above the base of the underlying Simi Conglomerate. This part of the Santa Susana Formation is correlative to the upper Paleocene Thanetian Stage based on the presence of calcareous nannofossils found by FILEWICZ & HILL (1983) and planktonic foraminifera found by HEITMAN (1983).

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; lithified, muddy siltstone

Size class: macrofossils

Reposited in the LACM

Primary reference: R. L. Squires. 1990. New Paleogene Siliquariid and Vermetid Gastropods from the Pacific Coast of Southwestern North America. The Veliger 33(3):286-292 [W. Kiessling/M. Krause]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 185200: authorized by Matthew Clapham, entered by Matthew Clapham on 15.04.2017

Creative Commons license: CC BY (attribution)