Butte Mountains, Unit 4 (Permian of the United States)

Where: White Pine County, Nevada (39.6° N, 115.3° W: paleocoordinates 14.3° N, 36.3° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Loray Formation, Kungurian (279.3 - 272.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; carbonate

Size class: macrofossils

Preservation: replaced with silica

Primary reference: T. V. Mayou. 1967. Paleontology of the Permian Loray Formation in White Pine County, Nevada. Brigham Young University Research Studies, Geology Series 14:101-122 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 38744: authorized by David Bottjer, entered by Matthew Clapham on 03.05.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

• Ostracodes common, crinoid ossicles rare
Bivalvia
 Protobranchia - Nuculanidae
"Nuculana obesa" = Polidevcia obesa
"Nuculana obesa" = Polidevcia obesa White 1879 pointed nut clam
Scaphopoda
 Dentaliida - Prodentaliidae
"Plagioglypta canna" = Prodentalium canna
"Plagioglypta canna" = Prodentalium canna White 1874 tusk shell
Stenolaemata
 Fenestrida - Fenestellidae
Fenestella sp. Lonsdale 1839
 Trepostomida - Stenoporidae
Strophomenata
 Productida - Aulostegidae
Costellarina kaasai Yancey 1978