CSUN Loc. 486 (Eocene of the United States)

Where: Ventura County, California (34.3° N, 118.6° W: paleocoordinates 35.1° N, 104.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Llajas Formation, Lutetian (47.8 - 41.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: offshore; sandstone

• Shallow-marine (transgressive) facies

Size class: macrofossils

Preservation: mold/impression

Collected by Squires in 1978; reposited in the LACM

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 201695: authorized by Jonathan Marcot, entered by Jonathan Marcot on 21.05.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Cephalaspidea - Cylichnidae
"Cylichnina tantilla" = Cylichnella tantilla
"Cylichnina tantilla" = Cylichnella tantilla Anderson and Hanna 1925 snail
 Architaenioglossa - Ampullinidae
Eocernina hannibali Dickerson 1914 snail
Pachycrommium clarki Stewart 1927 snail
 Neogastropoda - Ptychatractidae
Exilia llajasensis Bentson 1940 snail
 Neogastropoda -
 Neogastropoda - Conidae
Conus hornii Gabb 1864 cone shell
as Conus hornii umpquaensis
 Ficoidea - Ficidae
Ficopsis remondii Gabb 1864 fig shell
as Ficopsis remondii crescentensis
 Naticoidea - Naticidae
 Tonnoidea - Bursidae
Ranellina pilsbryi Stewart 1927 frog shell
 Sorbeoconcha - Turritellidae
Turritella uvasana Conrad 1865 turret shell
as Turritella uvasana applinae
Turritella buwaldana Dickerson 1916 turret shell
 Architectonicoidea - Architectonicidae
"Architectonica (Stellaxis) cognata" = Stellaxis cognata
"Architectonica (Stellaxis) cognata" = Stellaxis cognata Gabb 1864 sundial