USGS Cenozoic M4658 San Emigdio Creek (Eocene of the United States)

Also known as UCMP IP8677

Where: Kern County, California (34.9° N, 119.2° W: paleocoordinates 35.2° N, 105.9° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: San Emigdio Formation, Middle Eocene (47.8 - 37.7 Ma)

• Late Eocene, Refugian

• bed-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Collected by Nilsen, T. H. in 1971

Primary reference: T. H. Nilsen. 1987. Stratigraphy and sedimentology of the Eocene Tejon Formation, western Tehachapi and San Emigdio mountains, California. United States Geological Survey Professional Paper 1268:1-110 [A. Miller/A. Hendy/R. McClees-Funinan]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 194440: authorized by Patricia Holroyd, entered by Susan Tremblay on 19.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

Gastropoda
 Cerithioidea - Turritellidae
Turritella aff. variata Conrad 1857 turret shell
specimen with accentuated posterior spiral
 Sorbeoconcha - Naticidae
Naticidae indet. Guilding 1834 moon snail
possibly representing only one species
? Polinices sp. Monfort 1810 moon snail
 Sorbeoconcha - Bursidae
Olequahia lorenzana Wagner and Schilling 1923 frog shell
 Neogastropoda - Buccinidae
"Siphonalia merriami" = Siphonalia (Kelletia) merriami
"Siphonalia merriami" = Siphonalia (Kelletia) merriami Wagner and Schilling 1923 true whelk
 Neotaenioglossa - Calyptraeidae
Crepidula cf. ungana Dall 1908 slipper shell
 Epitonioidea - Epitoniidae
"Epitonium condoni" = Epitonium (Boreoscala) condoni
"Epitonium condoni" = Epitonium (Boreoscala) condoni Dall 1909 wentletrap
Bivalvia
  -
"Pelecypoda indet." = Bivalvia
"Pelecypoda indet." = Bivalvia Linnaeus 1758 clam
 Carditida - Crassatellidae
? Crassatella sp. Lamarck 1799 clam
 Cardiida - Mactridae
"Spisula cf. pittsburgensis" = Mactromeris pittsburgensis, "Spisula cf. rushi" = Mactromeris rushi, "Spisula cf. ramonensis" = Mactromeris ramonensis
"Spisula cf. pittsburgensis" = Mactromeris pittsburgensis Clark 1925 clam
"Spisula cf. rushi" = Mactromeris rushi Wagner and Schilling 1923 clam
"Spisula cf. ramonensis" = Mactromeris ramonensis Packard 1916 clam
 Cardiida - Veneridae
Pitar sp. Römer 1857 venus clam
 Cardiida - Cardiidae
Cardiidae indet. Lamarck 1809 cockle
minute specimen
 Lucinida - Lucinidae
Here aff. excavata Carpenter 1857 clam
misspelled as excavatus
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium "new species?" Linnaeus 1758 tusk shell