CSUN Loc. 974 [Juncal Fm] (Eocene of the United States)

Also known as LACMIP Loc. 16193

Where: Ventura County, California (34.8° N, 118.2° W: paleocoordinates 35.5° N, 104.1° 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 northern 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 and tested for microfossils (nannos and planktonic forams), but all collections 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 5524: authorized by Arnold Miller, entered by Karen Layou on 11.10.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Cerithioidea - Turritellidae
Turritella buwaldana
Turritella buwaldana Dickerson 1916 turret shell
 Architaenioglossa - Ampullinidae
Eocernina hannibali
Eocernina hannibali Dickerson 1914 snail
? in locality listing
 Sorbeoconcha - Xenophoridae
Xenophora stocki
Xenophora stocki Dickerson 1916 carrier shell
 Neogastropoda - Conidae
Conus remondii
Conus remondii Gabb 1864 cone shell
[entered as Conus remondi]
 Trochoidea - Turbinidae
Arene mcleani n. sp.
Arene mcleani n. sp. Squires 1988 snail
 Opisthobranchia - Retusidae
Cylichnina tantilla
Cylichnina tantilla Anderson and Hanna 1925 snail
Bivalvia
 Nuculida - Nuculidae
Acila decisa
Acila decisa Conrad 1855 divaricate nutclam
 Arcida - Glycymerididae
"Glycymeris sagittata" = Glycymeris (Glycymerita) sagittata
"Glycymeris sagittata" = Glycymeris (Glycymerita) sagittata Gabb 1864 clam
 Pholadida - Corbulidae
"Corbula parilis" = Caryocorbula parilis
"Corbula parilis" = Caryocorbula parilis Gabb 1864 clam
 Cardiida - Veneridae
Pitar joaquinensis
Pitar joaquinensis Vokes 1939 venus clam