Where: California (34.0° N, 118.0° W: paleocoordinates 33.5° N, 115.1° W)
• coordinate based on nearby landmark
• small collection-level geographic resolution
When: Puente Formation, Tortonian (11.6 - 7.2 Ma)
• Upper Puente shale of the Mohnian horizon, Upper Miocene. The Mohnian is the older of two Upper Miocene horizons in California terminology, probably not older than 14 Ma, but also not extending to the top of the Miocene. The upper part of the Puente shale is probably in the upper part of the Mohnian.
Environment/lithology: marine; lithified, gray shale
Size class: mesofossils
Reposited in the LACM
Collection methods: core
• Specimens found by Dr. Lore Rose David, given by her to Miss Jane Everest, who presented them to the Los Angeles County Museum of History, Science and Art.
Primary reference: W. D. Pierce. 1945. Two new fossils from the Upper Miocene of the Puente Hills. Bulletin of the Southern California Academy of Sciences 44(1):3-6 [M. Clapham/M. Clapham] more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 124524: authorized by Matthew Clapham, entered by Matthew Clapham on 17.02.2012
Creative Commons license: CC BY (attribution)