Where: Ventura County, California (34.3° N, 118.7° W: paleocoordinates 38.0° N, 99.2° W)
• coordinate based on nearby landmark
When: Santa Susana Formation, Thanetian (59.2 - 56.0 Ma)
• Originally described as "Martinez," but now belongs to Santa Susana Formation. Nautilids come from Zinsmeister's (1983) "assemblage A" which spans the lower three-quarters of the Santa Susana. Planktonic foraminifera suggest a P4 and P5 age (Heitman, 1983) and calcareous nannoplankton belong to zones CP5-CP8 (Filewicz & Hill, 1983), indicating a Thanetian age.
• group of beds-level stratigraphic resolution
Environment/lithology: marine; siliciclastic sediments
Size class: macrofossils
Reposited in the UCMP
Primary reference: H. E. Vokes. 1937. Nautiloid cephalopods from the Eocene of California. Journal of Paleontology 11:3-9 [M. Clapham/M. Clapham]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 166086: authorized by Matthew Clapham, entered by Kristina Okamoto on 04.02.2015
Creative Commons license: CC BY (attribution)
Taxonomic list
Cephalopoda | |
Hercoglossa simiensis n. sp.
Hercoglossa simiensis n. sp. Vokes 1937 nautiloid |