UCR 4923 (Eocene of the United States)

Where: San Diego County, California (32.9° N, 117.2° W: paleocoordinates 33.6° N, 103.2° W)

• coordinate estimated from map

When: Ardath Formation (La Jolla Group), Lutetian (47.8 - 41.3 Ma)

Environment/lithology: deep subtidal shelf; shale

Size class: macrofossils

Primary reference: C. R. Givens and M. P. Kennedy. 1979. Eocene molluscan stages and their correlation, San Diego area, California. Pacific Section SEPM 1979:81-95 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 200721: authorized by Mark Uhen, entered by Mark Uhen on 15.04.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Architaenioglossa - Ampullinidae
Eocernina hannibali Dickerson 1914 snail
 Cerithioidea - Turritellidae
Turritella andersoni Dickerson 1916 turret shell
subspecies lawsoni
Turritella scrippsensis Hanna 1927 turret shell
 Neogastropoda - Volutidae
Lyrischapa lajollaensis Hanna 1927 volute
 Sorbeoconcha - Strombidae
"Ectinochilus supraplicatus" = Rimella supraplicata
"Ectinochilus supraplicatus" = Rimella supraplicata Gabb 1864 true conch
 Sorbeoconcha - Cassidae
"? Galeodea cf. susanae" = Galeodea sutterensis
"? Galeodea cf. susanae" = Galeodea sutterensis Dickerson 1916 snail
Bivalvia
 Pholadida - Corbulidae
"Corbula cf. parilis" = Caryocorbula parilis
"Corbula cf. parilis" = Caryocorbula parilis Gabb 1864 clam
 Cardiida - Veneridae
"Pitar cf. kelloggi" = Antigona kelloggi
"Pitar cf. kelloggi" = Antigona kelloggi Hanna 1927 venus clam