Where: Los Angeles County, California (34.2° N, 118.7° W: paleocoordinates 38.7° N, 85.5° W)

• coordinate estimated from map

When: Chatsworth Formation, Late/Upper Cretaceous (100.5 - 66.0 Ma)

• Its stratigraphic position is considerably above that of the Pleasants member, characterized by Metaplacenticeras pacificum (Smith) found in this area by Popenoe. Numerous examples of the species are in the Academy of Sciences from the same area, col­ lected by Stephen Bowers, associated with Metaplacenticeras bowersi n. sp.

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by C. E. Leach; reposited in the CAS

Primary reference: F. M. Anderson. 1958. Upper Cretaceous of the Pacific Coast. Geological Society of America Memoir 71:1-378 [A. Miller/A. Hendy/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 215342: authorized by Jonathan Marcot, entered by Jonathan Marcot on 09.11.2020

Creative Commons license: CC BY (attribution)