Vista, Horizon 2 (Eocene of the United States)

Also known as UCR 4865

Where: San Diego County, California (33.2° N, 117.2° W: paleocoordinates 33.9° N, 103.2° W)

• coordinate stated in text

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

Environment/lithology: peritidal; sandstone and siltstone

• interbedded sandstone, siltstone, and claystone

Size class: macrofossils

Primary reference: C. R. Givens and M. P. Kennedy. 1976. Middle Eocene mollusks from northern San Diego County, California. Journal of Paleontology 50(5):954-975 [M. Uhen/M. Uhen/M. Uhen]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 200657: authorized by Mark Uhen, entered by Mark Uhen on 12.04.2019

Creative Commons license: CC BY (attribution)

Taxonomic list

Ostracoda
 Podocopida -
Clithrocytheridea sp. Sepkoski 2002 ostracod
Cytheretta sp. ostracod
Bivalvia
 Pectinida - Anomiidae
Anomia mcgoniglensis Hanna 1927 jingle
 Ostreida - Ostreidae
 Pholadida - Corbulidae
"Corbula (Caryocorbula) domenginica" = Corbula domenginica
"Corbula (Caryocorbula) domenginica" = Corbula domenginica Vokes 1939 clam
 Cardiida - Veneridae
 Protobranchia - Nuculanidae
"Nuculana (Saccella) cf. parkeri" = Saccella
"Nuculana (Saccella) cf. parkeri" = Saccella pointed nut clam
Gastropoda
 Architaenioglossa - Ampullinidae
Ampullella schencki Vokes 1939 snail
 Neogastropoda - Buccinidae
Janiopsis sammarcosensis n. sp. true whelk
Siphonalia vistaensis n. sp. Givens and Kennedy 1976 true whelk
 Neogastropoda - Buccinulidae
Umpquaia oregonensis Turner 1938 snail
 Neogastropoda - Fasciolariidae
Clavilithes sp. Swainson 1840 snail
n. sp.
 Neogastropoda - Muricidae
Muricopsis vistaensis n. sp. Givens and Kennedy 1976 murex snail
 Naticoidea - Naticidae
"Neverita (Glossulax) globosa" = Neverita globosa, Crommium andersoni
"Neverita (Glossulax) globosa" = Neverita globosa Gabb 1869 moon snail
Crommium andersoni Dickerson 1914 moon snail
 Sorbeoconcha - Potamididae
Potamides (Potamides) carbonicola Cooper 1894 horn snail
 Sorbeoconcha - Thiaridae
Loxotrema turritum Gabb 1868 snail
 Sorbeoconcha - Brachytrematidae
"Benoistea umpquaensis" = Benoistia
"Benoistea umpquaensis" = Benoistia snail
 Sorbeoconcha - Cerithiidae
Bittium preussi Hanna 1924 cerith snail
 Neritoidea - Neritidae
Gymnolaemata
 Cheilostomata - Electridae
? Conopeum sp. Gray 1848