S.U.# 2362 - 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). 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 shel environment.
• Fossiliferous fine sandstone

Size class: macrofossils

Preservation: mold/impression

Collection methods: quarrying,

• Collection presumably reposited at Stanford University.

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 52622: 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.
Bivalvia
 Nuculida - Nuculidae
"Acila shumardi" = Acila (Truncacila) shumardi
"Acila shumardi" = Acila (Truncacila) shumardi Dall 1909 divaricate nutclam
 Nuculanida - Nuculanidae
Nuculana sp. Link 1807 pointed nut clam
 Nuculanida - Sareptidae
"Yoldia cf. packardi" = Portlandia (Portlandia) packardi
"Yoldia cf. packardi" = Portlandia (Portlandia) packardi Clark 1918 clam
 Ostreida - Ostreidae
Ostrea sp. Linnaeus 1758 oyster
 Mytilida - Mytilidae
"Volsella cf. porterensis" = Modiolus porterensis
"Volsella cf. porterensis" = Modiolus porterensis Clark 1925 mussel
 Cardiida - Mesodesmatidae
Myadesma pacifica Hall and Ambrose 1916 clam
 Cardiida - Veneridae
Macrocallista sp. Meek 1876 venus clam
Tivela sp. Link 1807 venus clam
 Cardiida - Cardiidae
Cardium sp. Linnaeus 1758 cockle
 Lucinida - Thyasiridae
"Thyasira cf. folgeri" = Thyasira (Conchocele) folgeri
"Thyasira cf. folgeri" = Thyasira (Conchocele) folgeri Wagner and Schilling 1923 clam
 Carditida - Crassatellidae
Crassatella sp. Lamarck 1799 clam
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp., "Dentalium conradi" = Dentalium pseudonyma
Dentalium sp. Linnaeus 1758 tusk shell
"Dentalium conradi" = Dentalium pseudonyma Pilsbry and Sharp 1898 tusk shell
Gastropoda
 Epitonioidea - Epitoniidae
Epitonium sp. Bolten 1798 wentletrap
 Sorbeoconcha - Naticidae
"Polinices (Euspira) sp." = Euspira
"Polinices (Euspira) sp." = Euspira Agassiz 1837 moon snail
 Neogastropoda - Clavatulidae
Turricula sp. Schumacher 1817 snail
 Neogastropoda - Turridae
Gemmula sp. Weinkauff 1875 turrid
 Sorbeoconcha - Bursidae
"Strepsidura lincolnensis" = Olequahia lincolnensis
"Strepsidura lincolnensis" = Olequahia lincolnensis Weaver 1916 frog shell
Subspecies: Strepsidura lincolnensis lorenzanum
 Neotaenioglossa - Calyptraeidae
Crepidula sp. Lamarck 1799 slipper shell