Where: Yolo County, California (38.8° N, 122.2° W: paleocoordinates 42.7° N, 103.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Capay Formation, Ypresian (56.0 - 47.8 Ma)

• The invertebrate faunas from these localities have been assigned to the Capay stage of the Californian marine Eocene by Merriam and Turner (1937) and are correlative with one another and with faunas from the Cerros shale member of the Lodo formation, north of Coalinga, and from glauconitic shales and sandstones at Marysville Buttes.

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal; sandy mudstone and sandy conglomerate

Size class: macrofossils

Collected by T. H. Crook and J. M. Kirby; reposited in the UCMP

Primary reference: C. W. Merriam and F. E. Turner. 1937. The Capay Middle Eocene of Northern California. University of California Publications, Bulletin of the Department of Geological Sciences 24(6):91-114 [P. Wagner/P. Wagner/J. Marcot]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 238131: authorized by Jonathan Marcot, entered by Jonathan Marcot on 10.01.2025

Creative Commons license: CC BY (attribution)