CSUN Loc. 455, Las Llajas Canyon, Santa Susana Mountains (Eocene of the United States)

Where: Los Angeles County, California (34.3° N, 118.7° W: paleocoordinates 35.1° 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 200845: authorized by Jonathan Marcot, entered by Jonathan Marcot on 22.04.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Opisthobranchia - Retusidae
Cylichnina tantilla Anderson and Hanna 1925 snail
 Heterostropha - Architectonicidae
 Cerithioidea - Turritellidae
Turritella buwaldana Dickerson 1916 turret shell
Turritella andersoni Dickerson 1916 turret shell
as Turritella andersoni lawsoni
 Neotaenioglossa - Calyptraeidae
Calyptraea diegoana Conrad 1855 slipper shell
 Sorbeoconcha - Cassidae
 Neogastropoda - Volutidae
Lyria andersoni Waring 1917 volute
 Neogastropoda - Conidae
Conus hornii Gabb 1864 cone shell
as Conus hornii umpquaensis
 Neogastropoda - Clathurellidae
 Sorbeoconcha - Strombidae
 Architaenioglossa - Ampullinidae
Pachycrommium clarki Stewart 1927 snail
Eocernina hannibali Dickerson 1914 snail
Scaphopoda
 Dentaliida - Dentaliidae
Bivalvia
 Mytilida - Mytilidae
Brachidontes (Brachidontes) cowlitzensis Weaver and Van Winkle Palmer 1922 mussel
 Pholadida - Corbulidae
Corbula (Caryocorbula) dickersoni Weaver and Van Winkle Palmer 1922 clam