CSUN Loc. 440, Santa Susana Mountains (Eocene to of the United States)

Where: Ventura County, California (34.3° N, 118.7° W: paleocoordinates 36.1° N, 103.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Llajas Formation, Ypresian to Ypresian (56.0 - 41.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, bioturbated sandstone

Size class: macrofossils

Collected by R. L. Squires; reposited in the LACM

Collection methods: bulk,

• Repository: formerly CSUN (California State University Northridge)

Primary reference: R. L. Squires. 1984. Megapaleontology of the Eocene Llajas Formation, Simi Valley, California. Contributions in Science, Natural History Museum of Los Angeles County 350:1-76 [M. Clapham/M. Clapham]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 200289: authorized by Jonathan Marcot, entered by Jonathan Marcot on 26.03.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Architaenioglossa - Ampullinidae
Eocernina hannibali Dickerson 1914 snail
 Cerithioidea - Turritellidae
Turritella uvasana Conrad 1855 turret shell
as Turritella uvasana applinae
Turritella andersoni Dickerson 1916 turret shell
as Turritella andersoni lawsoni
 Sorbeoconcha - Strombidae
 Sorbeoconcha - Cassidae