CSUN 452, near mouth of Las Llajas Canyon (Eocene of the United States)

Also known as UCMP locality A-994

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: coastal; sandstone

• lnterfingering coastal alluvial-fan facies and shallow-marine (transgressive) facies

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 200842: authorized by Jonathan Marcot, entered by Jonathan Marcot on 22.04.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Carditida - Carditidae
"Venericardia (Pacificor) aragonia" = Megacardita (Venericor) aragonia
"Venericardia (Pacificor) aragonia" = Megacardita (Venericor) aragonia Arnold and Hannibal 1914 clam
as Venericardia (Pacificor) aragonia joaquinensis
Gastropoda
 Architaenioglossa - Ampullinidae
Pachycrommium clarki Stewart 1927 snail
 Neogastropoda -
"Strepsidura ficus" = Whitneya ficus
"Strepsidura ficus" = Whitneya ficus Gabb 1864 snail
 Sorbeoconcha - Turritellidae
Turritella uvasana Conrad 1865 turret shell
type locality of subspeies Turritella uvasana infera
Turritella meganosensis Clark and Woodford 1927 turret shell
as Turritella meganosensis protumescens
 Architectonicoidea - Architectonicidae
"Architectonica (Stellaxis) cognata" = Stellaxis cognata
"Architectonica (Stellaxis) cognata" = Stellaxis cognata Gabb 1864 sundial