CSUN 830, Canton Canyon (Eocene of the United States)

Where: Los Angeles County, California (34.5° N, 118.7° W)

• Paleocoordinates: 40.8° N, 93.2° W (Wright 2013)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Juncal Formation, Ypresian (56.0 - 48.1 Ma)

• Age: middle early Eocene ("Capay Stage")

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; lithified siltstone

• Channel-lag storm accumulations of slightly transported fossils in transition-zone siltstone that formed in shelf-like depths

Size class: macrofossils

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

Primary reference: R. L. Squires. 1990. New Paleogene Fimbria (Mollusca: Bivalvia) from the Pacific coast of southwestern North America. Journal of Paleontology 64:552-556 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 185192: authorized by Matthew Clapham, entered by Matthew Clapham on 15.04.2017, edited by Jonathan Marcot

Creative Commons license: CC0 (CC0)

Taxonomic list

Gastropoda
 Sorbeoconcha - Rostellariidae
Chedevillia saltonensis Squires and Advocate 1986 snail
 Sorbeoconcha - Seraphsidae
Paraseraphs erraticus Cooper 1894 snail
 Neogastropoda - Fasciolariidae
Clavilithes tabulatus Dickerson 1913 spindle shell
 Architaenioglossa - Ampullinidae
Pachycrommium clarki Stewart 1927 snail
Eocernina hannibali Dickerson 1914 snail
 Opisthobranchiata - Retusidae
Cylichnina tantilla Anderson and Hanna 1925 snail
 Neritoidea - Neritidae
Velates perversus Gmelin 1791 snail
Bivalvia
 Pectinida - Plicatulidae
Plicatula juncalensis Squires 1987 scallop
 Arcida - Arcidae
 Lucinida - Lucinidae
Fimbria pacifica Squires 1990 clam
"Miltha packi" = Gibbolucina (Eomiltha) packi Dickerson 1916 clam
Sedentaria
 Sabellida - Serpulidae