USGS 6957-PC (Carboniferous to of the United States)

Also known as Sando et al. Bear Creek Loc.72

Where: Lincoln County, Wyoming (42.8° N, 110.8° W: paleocoordinates 1.5° N, 41.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Caninia zone, Moffat Trail Member (Amsden Formation), Chesterian to Chesterian (335.5 - 323.7 Ma)

• Limestone in upper part of Amsden Fm. "Late Mississippian (Chesterian)."

• bed-level stratigraphic resolution

Environment/lithology: offshore shelf; lithified, dolomitic, shelly/skeletal, gray, yellow limestone

• moffat trail: predominantly light gray, medium to coarse grained, fossiliferous limestone composed largely of comminuted organic debris, mostly crinoidal, in beds 0.3 - 5 ft thick. brown, gray, or jasperoid chert nodules and lenses are common. thin intercalated beds of silty dolomite or dolomitic limestone that weather yellowish brown or buff occur sparsely. limestone at some localities contain considerable quantities of fine quartz sand, and some beds of fine grained quartz sandstone and quartzite are present. hoback canyon upper-half beds contain partings and beds of dark gray fissile clay shale. glory mountain member beds include ferruginous pisolites in thin crinoidal limestone. most of the larger fossils are abraded, fragmented, haphazardly oriented.

Reposited in the USGS

• "Collected by J.S. Williams, 1931."

Primary reference: W. J. Sando, M., J.r. Gordon, and J. T. Dutro. 1975. Stratigraphy and geologic history of the Amsden Formation (Mississippian and Pennsylvanian) of Wyoming. United States Geological Survey Professional Paper 848A:1-83 [J. Alroy/M. Sommers/P. Wagner]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 5735: authorized by John Alroy, entered by Mike Sommers on 17.11.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Bryozoa
  -
Bryozoa indet.
Bryozoa indet. Ehrenberg 1831
chaetetiform bryozoan, n. gen. B, n. sp.
Rhynchonellata
 Athyridida - Athyrididae
Composita sulcata
Composita sulcata Weller 1914
Strophomenata
 Orthotetida - Pulsiidae
Pulsia sp.
Pulsia sp.
sp. A
Demospongiae
 Hadromerida - Suberitidae
Chaetetes wyomingensis
Florideophyceae
  - Corallinophycidae
Stacheoides sp.
Stacheoides sp. Cummings 1955
Rhodophyceae
  - Aoujgaliaceae
Stacheia sp.
Stacheia sp. Brady 1876