CSUN Loc. 491 - Las Llajas Canyon (Eocene of the United States)

Where: Ventura County, California (34.3° N, 118.7° W: paleocoordinates 35.0° N, 104.6° W)

• coordinate estimated from map

• small collection-level geographic resolution

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

• bed-level stratigraphic resolution

Environment/lithology: offshore; sandstone

Size class: macrofossils

Reposited in the LACM

Collection methods: bulk,

• Repository: Formerly California State University Northridge (CSUN)

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 201700: 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
 Triphoroidea - Cerithiopsidae
Cerithiopsis llajasensis Squires 1984 snail
 Architaenioglossa - Ampullinidae
Pachycrommium clarki Stewart 1927 snail
 Neogastropoda - Conidae
Conus hornii Gabb 1864 cone shell
as Conus hornii umpquaensis
 Stromboidea - Strombidae
"Ectinochilus (Macilentos) macilentus" = Ectinochilus (Macilentos) macilenta
"Ectinochilus (Macilentos) macilentus" = Ectinochilus (Macilentos) macilenta White 1889 true conch
 Cypraeoidea - Cypraeidae
Cypraea castacensis Stewart 1927 cowry
 Calyptraeoidea - Calyptraeidae
Calyptraea diegoana Conrad 1857 slipper shell
 Sorbeoconcha - Turritellidae
Turritella uvasana Conrad 1865 turret shell
as Turritella uvasana applinae
 Architectonicoidea - Architectonicidae
"Architectonica (Stellaxis) cognata" = Stellaxis cognata
"Architectonica (Stellaxis) cognata" = Stellaxis cognata Gabb 1864 sundial
Scaphopoda
 Dentaliida - Dentaliidae
Orthophragmina
  -
"Pseudophragmina (Proporocyclina) clarki" = Orthophragmina clarki
"Pseudophragmina (Proporocyclina) clarki" = Orthophragmina clarki Cushman 1920