USGS 6960B-PC: Chesterian - Arnsbergian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Demospongiae - Hadromerida - Suberitidae
Chaetetes wyomingensis
unclassified
Calcisphaera sp. Williamson 1880
Anthozoa - Stauriida - Cyathopsidae
Caninia cf. nevadensis
Anthozoa - Stauriida - Aulophyllidae
? Turbinatocaninia sp. Dobrolyubova 1970
Anthozoa - Auloporida - Syringoporidae
Pleurosiphonella drummondi
Rhynchonellata - Spiriferida - Spiriferidae
Anthracospirifer curvilateralis (Easton 1962)
ssp. brutus
Rhynchonellata - Athyridida - Athyrididae
Composita sp. Brown 1849
unclassified
Bryozoa indet. Ehrenberg 1831
gen. et sp. indet.
Gastropoda - Bellerophontida
? Bellerophon sp. de Montfort 1808
    = Bellerophontoidea indet. M'Coy 1851
Wagner 2023
Trilobita - Proetida - Phillipsiidae
Paladin ? moorei
Tubothalamea - Miliolida - Cornuspiridae
Cornuspira sp. Schultze 1854
Eostaffellidae
Eostaffellina sp. Reitlinger 1963
Staffellidae
Pseudoendothyra sp.
Archaediscidae
Asteroarchaediscus sp.
Archaediscus sp.
Endothyridae
Endothyra ex gr. bowmani Phillips 1846
Zellerina sp.
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 215-225 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.S. Williams, 1931."
Metadata
Also known as:Sando et al. Moffat Trail Loc.78
Database number:5741
Authorizer:J. Alroy, P. Wagner Enterer:M. Sommers, P. Wagner
Modifier:C. Visaggi Research group:marine invertebrate
Created:1999-11-17 17:38:58 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]

Secondary references:

9042 P. J. Wagner. 2023. Paleozoic Gastropod, Rostroconch, Helcionelloid and Tergomyan Database (2006 - 2023). [P. Wagner/P. Wagner/P. Wagner]