CSUN Loc. 978 [Juncal Fm] (Eocene of the United States)

Also known as LACMIP Loc. 16150

Where: Ventura County, California (34.8° N, 119.2° W: paleocoordinates 35.5° N, 105.1° W)

• outcrop-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified, lag, argillaceous siltstone and poorly lithified sandstone

• the juncal formation in northen lockwood valley is 605 m thick and consists predominantly of muddy siltstone with minor amounts of sandstone and scattered lenses with fossils. lenses are fine to coarse sandstone representing storm lag deposits.

Size class: macrofossils

Reposited in the LACM

Collection methods: bulk,

• Samples were taken for microfossil (nannons and planktonic forams) collection, but all were barren.

Primary reference: R. L. Squires. 1988. Eocene Macropaleontology of Northern Lockwood Valley, Ventura County, California. Contributions in Science (Natural History Museum of Los Angeles County) 398:1-23 [A. Miller/K. Layou]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 5531: authorized by Arnold Miller, entered by Karen Layou on 11.10.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Arcida - Glycymerididae
Glycymeris sagittata Gabb 1864 clam
 Carditida - Carditidae
"Glyptoactis domenginica" = Glyptoactis (Claibornicardia) domenginica
"Glyptoactis domenginica" = Glyptoactis (Claibornicardia) domenginica Vokes 1939 clam
 Cardiida - Veneridae
Pitar joaquinensis Vokes 1939 venus clam
Callista vokesi venus clam
Callista hornii vokesi
Gastropoda
 Cephalaspidea - Cylichnidae
"Cylichnina tantilla" = Cylichnella tantilla
"Cylichnina tantilla" = Cylichnella tantilla Anderson and Hanna 1925 snail
 Architaenioglossa - Ampullinidae
Eocernina hannibali Dickerson 1914 snail
 Neogastropoda - Conidae
Conus caleocius Vokes 1939 cone shell
 Sorbeoconcha - Turritellidae
Turritella andersoni Dickerson 1916 turret shell
? in locality information
Turritella buwaldana Dickerson 1916 turret shell