UCMP D-5590, Central Butte Mountains (Permian of the United States)

Where: Nevada (39.6° N, 115.3° W)

• Paleocoordinates: 14.0° N, 36.2° W (Wright 2013)

• coordinate stated in text

• small collection-level geographic resolution

When: Loray Formation, Kungurian (283.3 - 274.4 Ma)

• 100' (30 m) below top of Arcturus Group

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, calcareous mudstone

• The rocks containing this community are calcareous mudstone and siltstone and wackestones with a high proportion of clay and noncalcaroues silt. The community is sometimes found in coarser grained muddy sandstone and packstone. The sediments are thin bedded and sometimes laminated.

Size class: macrofossils

Collected by T. Yancey, L. Plas, M. Kaasa; reposited in the UCMP

• Also included are 6 pentacrinoids (indiv.)

Primary reference: T. E. Yancey and C.H. Stevens. 1981. Early Permian fossil communities in northeastern Nevada and northwestern Utah. In J.Gray, A.J. Boucot, and W.B.N. Berry (eds.), Communitites of the Past 243-269 [T. Olszewski/M. Gibson/S. Bruning]more details

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 10449: authorized by Tom Olszewski, entered by Melissa Gibson on 17.04.2001

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names
Sedentaria
 Sabellida - Serpulidae
Spirorbis sp.
Spirorbis sp. Daudin 1800
Gastropoda
 Euomphalina - Euomphalidae
Leptomphalus sp.
Leptomphalus sp. Yochelson 1956 snail
 Caenogastropoda - Goniasmatidae
Goniasma sp.
Goniasma sp. Tomlin 1930 snail
 Caenogastropoda - Meekospiridae
Meekospira sp.
Meekospira sp. Ulrich and Scofield 1897 snail
 Bellerophontida - Euphemitidae
Euphemitopsis sp.
Euphemitopsis sp. Yochelson 1960 snail
 Murchisoniina - Subulitidae
Subulites sp.
Subulites sp. Emmons 1842 snail
 Neritoidea - Naticopsidae
Naticopsis sp.
Naticopsis sp. M'Coy 1844 snail
Bivalvia
 Pectinida - Pseudomonotidae
Pseudomonotis sp.
Pseudomonotis sp. von Beyrich 1862 scallop
 Nuculida - Nuculidae
Nuculavus sp.
Nuculavus sp. Tschernyschev 1943 nut clam
Ulvophyceae
 Bryopsidales - Halimedaceae
Eugonophyllum sp.
Eugonophyllum sp. Konishi and Wray 1961