USGS 22987-PC (Carboniferous to of the United States)

Also known as Sando et al. Moffat Trail Loc.76

Where: Lincoln County, Wyoming (42.9° 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 (339.4 - 318.1 Ma)

• Limestone 217 ft above base 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.T. Dutro, Jr. and Mario Suarez, 1966."

Primary reference: W. J. Sando, M. Gordon, Jr., 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/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 5739: authorized by John Alroy, entered by Mike Sommers on 17.11.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

Rhynchonellata
 Athyridida - Athyrididae
 Spiriferida - Spiriferidae
Anthracospirifer ? curvilateralis Easton 1962
ssp. brutus
Anthozoa
 Auloporida - Thecostegitidae
Duncanopora duncanae tabulate coral
 Stauriida - Hapsiphyllidae
? Zaphrentites sp. Hudson 1941 horn coral
 Stauriida - Aulophyllidae
? Turbinatocaninia sp. Dobrolyubova 1970 horn coral
 Stauriida - Cyathopsidae