UCR 4920 (Eocene of the United States)

Where: San Diego County, California (32.9° N, 117.3° W: paleocoordinates 33.6° N, 103.2° W)

• coordinate stated in text

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

Environment/lithology: deep subtidal shelf; gray sandstone

• The specimen was collected from a calcareous concretion in a thin, very fine-grained, olive gray sandstone bed in the Ardath Shale, approximately 25 m stratigraphically above the contact with the underlying Torrey Sandstone (of Kennedy and Moore, 1971).

Size class: macrofossils

Primary reference: C. R. Givens. 1978. An occurrence of the Tethyan genus Volutilithes (Gastropoda: Volutidae) in the Eocene of California. Journal of Paleontology 52(1):104-108 [J. Marcot/J. Marcot]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 200718: authorized by Mark Uhen, entered by Mark Uhen on 15.04.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Gastropoda
 Cerithioidea - Cerithiidae
Bittium cliffensis
Bittium cliffensis Hanna 1927 cerith snail
 Neogastropoda - Volutidae
Volutilithes torreyensis n. sp.
Volutilithes torreyensis n. sp. Givens 1978 volute
 Sorbeoconcha - Xenophoridae
Xenophora stocki
Xenophora stocki Dickerson 1916 carrier shell
 Sorbeoconcha - Strombidae
Ectinochilus macilentus
Ectinochilus macilentus White 1889 true conch
 Sorbeoconcha - Cassidae
"Galeodea cf. susanae" = Galeodea sutterensis
"Galeodea cf. susanae" = Galeodea sutterensis Dickerson 1916 snail
Bivalvia
 Thraciida - Periplomatidae
Periploma eodiscus
Periploma eodiscus Vokes 1939 clam
 Cardiida - Tellinidae
"Tellina castacana" = Tellina (Angulus) castacana, Macoma viticola
"Tellina castacana" = Tellina (Angulus) castacana Anderson and Hanna 1925 tellin clam
Macoma viticola Anderson and Hanna 1925 tellin clam
 Cardiida - Veneridae
Pitar joaquinensis, "Pitar intica" = Pitaria intica
Pitar joaquinensis Vokes 1939 venus clam
"Pitar intica" = Pitaria intica Hanna 1927 venus clam
 Carditida - Carditidae
"Glyptoactis domenginica" = Glyptoactis (Claibornicardia) domenginica
"Glyptoactis domenginica" = Glyptoactis (Claibornicardia) domenginica Vokes 1939 clam
 Arcida - Glycymerididae
"Glycymeris rosecanyonensis" = Glycymeris (Glycymeris) rosecanyonensis
"Glycymeris rosecanyonensis" = Glycymeris (Glycymeris) rosecanyonensis Hanna 1927 clam