UCMP D-5622, High Bald Peaks, Medicine Range (Permian of the United States)

Where: Nevada (40.2° N, 115.2° W: paleocoordinates 12.9° N, 36.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Pequop Formation, Artinskian (290.1 - 279.3 Ma)

• 500' (153 m) below top of Pequop Formation.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, bioturbated, pebbly, shelly/skeletal limestone and lithified sandstone

• The enclosing rocks are composed of fine-grained mudstone or siltstone to coarse sandstone, and from wackestone to packstone. Occurrences on the west side of the seaway tend to be in limestones and sandstones and occasionaly in coarse pebble-bearing sediment, whereas occurrences on the east side of the seaway tend to be in finer-grained sediments with large clasts consisting entirely of shell material.

Size class: macrofossils

Collected by T. Yancey, L. Plas, M. Kaasa

Primary reference: T. E. Yancey. 1978. Brachiopods and mollusca of the Lower Permian Arcturus Group, Nevada and Utah, Part 1: brachiopods, scaphopods, rostroconchs, and bivalves. Bulletins of American Paleontology 74(303):257-367 [P. Wagner/P. Wagner/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 120967: authorized by Matthew Clapham, entered by Matthew Clapham on 24.11.2011

Creative Commons license: CC BY (attribution)

Taxonomic list

• Also included in the list are 15 ramose form bryozoans.
Show authors, comments, and common names
Strophomenata
 Productida - Productidae
"Squamaria ivesi" = Peniculauris ivesi
"Squamaria ivesi" = Peniculauris ivesi Newberry 1861