USGS 22986-PC: Chesterian - Arnsbergian, Wyoming
List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Staffellidae
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Pseudoendothyra ex gr. kremenskensis
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Pseudoendothyra sp.
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Eostaffellidae
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Eostaffella circuli
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Archaediscidae
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Neoarchaediscus sp.
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Asteroarchaediscus sp.
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Archaediscus ex gr. krestovnikovi
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Archaediscus sp.
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Endothyridae
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Endothyra sp.
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Endothyra ex gr. bowmani
Phillips 1846
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Anthozoa
- Auloporida
- Multithecoporidae
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? Multithecopora amsdenensis
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Anthozoa
- Stauriida
- Aulophyllidae
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? Turbinatocaninia sp.
Dobrolyubova 1970
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unclassified
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Calcisphaera sp.
Williamson 1880
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Conodonta
- Ozarkodinida
- Polygnathidae
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Cavusgnathus unicornis
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Conodonta
- Ozarkodinida
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Hindeodella sp.
Bassler 1925
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synonym of Ozarkodina | ||||||||||
Conodonta
- Prioniodontida
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Hibbardella sp.
Bassler 1925
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Rhynchonellata
- Spiriferida
- Spiriferidae
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Anthracospirifer ? curvilateralis
(Easton 1962)
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ssp. brutus | ||||||||||
unclassified
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Bryozoa indet.
Ehrenberg 1831
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chaetetiform bryozoan, n. gen. A, n. 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 | Epoch: | Mississippian |
*Period: | Early/Lower Carboniferous | ||
*International age/stage: | Pendleian - Arnsbergian | *Local age/stage: | Chesterian |
Key time interval: | Chesterian - Arnsbergian | Zone: | Caninia |
Age range of interval: | 335.80000 - 323.20000 m.y. ago | ||
* legacy (obsolete) database fields |
Stratigraphy
Formation: | Amsden | Member: | Moffat Trail | ||
Stratigraphic resolution: | bed | ||||
Stratigraphy comments: Limestone 210 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.75 | ||
Database number: | 5738 | ||
Authorizer: | J. Alroy | Enterer: | M. Sommers |
Modifier: | C. Visaggi | Research group: | marine invertebrate |
Created: | 1999-11-17 17:17:33 | 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] |