USGS Cenozoic M4655 East Twin Creek (Eocene of the United States)

Also known as UCMP IP8674

Where: Kern County, California (34.9° N, 119.3° W: paleocoordinates 35.7° N, 105.2° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Uvas Conglomerate Member (Tejon Formation), Eocene (56.0 - 33.9 Ma)

• Stratigraphically above M4654. Eocene. Species referred to Spiroglyphus or Tubulostium? are known from the early, middle, and late Eocene in California; they are especially common and characteristic of faunal assemblages of "Domengine" age. They were once believed to be vermetid gastropods.

• 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 194432: authorized by Patricia Holroyd, entered by Susan Tremblay on 19.06.2018

Creative Commons license: CC BY (attribution)

Taxonomic list

• samples sent to USNM for identification
Tubulostium
  -
? Tubulostium sp. Stoliczka 1868
this is the "Spiroglyphus" of earlier reports
Foraminifera
  -
Foraminifera indet. Eichwald 1830