S.U.# 2511 - Fresno [Tumey Fm] (Eocene of the United States)

Where: Fresno County, California (36.5° N, 120.5° W: paleocoordinates 35.6° N, 109.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Tumey Formation, Priabonian (38.0 - 33.9 Ma)

• The Tumey Sandstone occurs as a alrge lens in the shale of the Kreyenhagen Formation. The maximum thickness the Tumey Sandstone reaches is 800 ft. The Tumey Sandstone is overlain by the upper Kreyenhagen Shale and Temblor Formation. Has often been referred to as Eocene-Oligocene, but is early to middle Oligocene acccording to more recent correlation charts (e.g. Hickman, 1969). Collection from 50 ft above lower Kreyenhagen Shale. AGE: modified to Priabonian and "Tumey Formation" following EPICC stratigraphy revision [Hendy, 6/2020].

• bed-level stratigraphic resolution

Environment/lithology: offshore; lithified, fine-grained sandstone

• No environmental data reported, but assemblages appear to represent and offshore shelf environment.
• Fossiliferous fine sandstone

Size class: macrofossils

Preservation: mold/impression

Collection methods: quarrying,

• Collection presumably reposited at Stanford University. Collected by J. Zimmerman.

Primary reference: J. Zimmerman. 1944. Tumey Sandstone (Tertiary), Fresno County, California. Bulletin of the American Association of Petroleum Geologists 28(7):953-976 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 52625: authorized by Austin Hendy, entered by Austin Hendy on 12.08.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for mollusca with foraminifera. Nomenclature is somewhat antiquated, but with many species designations.
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell
Bivalvia
 Carditida - Crassatellidae
 Nuculida - Nuculidae
"Acila shumardi" = Acila (Truncacila) shumardi
"Acila shumardi" = Acila (Truncacila) shumardi Dall 1909 divaricate nutclam
Gastropoda
 Neogastropoda - Fasciolariidae
Perse sp. Clark 1918 snail