USGS 22985-PC: Chesterian - Arnsbergian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Calcisphaera sp. Williamson 1880
Calcisphaera laevis Williamson 1880
Anthozoa - Stauriida - Cyathopsidae
Caninia cf. nevadensis
unclassified
Bryozoa indet. Ehrenberg 1831
fistuliporid, gen. et sp. indet.
Eostaffellidae
Eostaffella circuli
Eostaffella sp. Rauser-Chernousova 1948
Staffellidae
Pseudoendothyra ex gr. kremenskensis
Pseudoendothyra sp.
Tuberitinidae
Eotuberitina sp.
Earlandiidae
Earlandia clavatula
Earlandia elegans
Archaediscidae
Neoarchaediscus incertus
Neoarchaediscus parvus
Asteroarchaediscus bachkiricus
Asteroarchaediscus sp.
Archaediscus ex gr. krestovnikovi
Archaediscus sp.
Planospirodiscus sp.
Endothyridae
Endothyra excellens
Endothyra ex gr. similis
Endothyra sp.
Endothyra ex gr. bowmani Phillips 1846
Zellerina discoidea
Endothyranella sp.
Palaeotextulariidae
Palaeotextularia sp.
Biseriamminidae
Biseriella moderata
Biseriella parva (Chernysheva 1948)
see common names

Geography
Country:United States State/province:Wyoming County:Lincoln
Coordinates: 42.9° North, 110.8° West (view map)
Paleocoordinates:1.5° North, 41.0° West
Basis of coordinate:estimated from map
Geographic resolution:small collection
Time
Period:Carboniferous
*Period:Early/Lower Carboniferous
*International age/stage:Pendleian - Arnsbergian *Local age/stage:Chesterian
Key time interval:Chesterian - Arnsbergian Zone: Caninia
Age range of interval:339.40000 - 318.10000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Amsden Member:Moffat Trail
Stratigraphic resolution:bed
Stratigraphy comments: Limestone 202-206 ft above base of Amsden Fm. "Late Mississippian (Chesterian)."
Lithology and environment
Primary lithology:dolomitic,shelly/skeletal,gray,yellow lithified "limestone"
Lithology description: 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.
Environment:offshore shelf Tectonic setting:cratonic basin
Taphonomy
Modes of preservation:body
Collection methods and comments
Collection methods:field collection,survey of museum collection
Reason for describing collection:biostratigraphic analysis
Museum repositories:USGS
Collection method comments: "Collected by J.T. Dutro, Jr. and Mario Suarez, 1966."
Metadata
Also known as:Sando et al. Moffat Trail Loc.74
Database number:5737
Authorizer:J. Alroy Enterer:M. Sommers
Modifier:C. Visaggi Research group:marine invertebrate
Created:1999-11-17 17:06:04 Last modified:2004-03-11 16:25:11
Access level:the public Released:2000-11-20 13:53:27
Creative Commons license:CC BY
Reference information

Primary reference:

349. 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]