CSUN 665, Orocopia Mountains (Eocene of the United States)

Also known as LACMIP loc. 40665

Where: Riverside County, California (33.6° N, 115.7° W: paleocoordinates 36.0° N, 98.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: P7 - P8 foram zone, Maniobra Formation, Ypresian (56.0 - 47.8 Ma)

• Basal part of formation; Capay Stage; Foraminifera indicative of P7 to P9 Zones and calcareous nannofossils indicative of CP9 to CP11 Zones also have been found 58 m upsection from CSUN locality 662 (Advocate, 1983).

• group of beds-level stratigraphic resolution

Environment/lithology: offshore; shale

• These deposits represent a transitional marginal marine to deep-water submarine-fan sequence deposited in subtropical waters (Advocate, 1983).
• consists of siliciclastics that locally contain some macrofossils and microfossils.

Size classes: macrofossils, mesofossils

Primary reference: R. L. Squires and D. M. Advocate. 1986. New Early Eocene Mollusks from the Orocopia Mountains, Southern California. Journal of Paleontology 60(4):851-864 [P. Wagner/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 177612: authorized by Pete Wagner, entered by Pete Wagner on 06.04.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

• Specimens at CSUN.
Gastropoda
 Sorbeoconcha - Cassidae
"Phalium (Semicassis) louella n. sp." = Galeodea louella
"Phalium (Semicassis) louella n. sp." = Galeodea louella Squires and Advocate 1986 snail
 Neritoidea - Neritidae
Velates perversus Gmelin 1791 snail