Hunt Mountain: Richmondian, Wyoming

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Rhynchonellata - Rhynchonellida - Rhynchotrematidae
Rhynchotrema iowense Wang 1949
Lepidocyclus gigas Wang 1949
recombined as Hiscobeccus gigas
Hypsiptycha anticostiensis (Billings 1862)
Hypsiptycha cf. neenah (Whitfield 1882)
Rhynchonellata - Orthida - Platyorthidae
Diceromyonia storeya (Okulitch 1943)
Rhynchonellata - Orthida - Plaesiomyidae
Dinorthis (Dinorthis) occidentalis (Okulitch 1943)
Plaesiomys aff. rockymontana (Wilson 1926)
Rhynchonellata - Orthida - Hesperorthidae
Hesperorthis cf. pyramidalis (Twenhofel 1928)
recombined as Skenidioides pyramidalis
Rhynchonellata - Orthida - Platystrophiidae
Platystrophia equiconvexa
Platystrophia prayi Howe 1966
recombined as Gnamptorhynchos prayi
Rhynchonellata - Atrypida - Anazygidae
Zygospira aequivalvis (Twenhofel 1928)
recombined as Anazyga aequivalvis
Rhynchonellata - Atrypida - Cyclospiridae
? Cyclospira anticostiana
Strophomenata - Strophomenida - Strophomenidae
Strophomena planocorrugata Twenhofel 1928
recombined as Rugomena planocorrugata
Strophomena fluctuosa Billings 1860
recombined as Nasutimena fluctuosa
Strophomenata - Strophomenida - Furcitellidae
Oepikina cf. pergibbosa (Foerste 1917)
Megamyonia nitens (Billings 1860)
Strophomenata - Strophomenida - Sowerbyellidae
Thaerodonta aff. clarksvillensis (Foerste 1912)
    = Eochonetes maearum Bauer and Stigall 2016
Bauer and Stigall 2016
see common names

Geography
Country:United States State/province:Wyoming County:Sheridan
Coordinates: 44.7° North, 107.7° West (view map)
Paleocoordinates:9.4° South, 66.4° West
Basis of coordinate:unpublished field data
Geographic resolution:outcrop
Time
Period:Ordovician Epoch:Late/Upper Ordovician
Stage:Katian 10 m.y. bin:Ordovician 5
*Period:Middle Ordovician - Late/Upper Ordovician *Local age/stage:Edenian - Richmondian
Key time interval:Richmondian
Age range of interval:449.80000 - 446.00000 m.y. ago
* legacy (obsolete) database fields
Stratigraphy
Formation:Bighorn Dolomite Member:Horseshoe Mountain
Stratigraphic resolution:member
Lithology and environment
Primary lithology: lithified argillaceous "limestone"
Includes fossils?Y
Lithology description: argillaceous limestone
Environment:deep subtidal indet. Tectonic setting:cratonic basin
Geology comments: Environment and tectonic setting based on unpublished field notes of SMH
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection excludes:some macrofossils
Collection methods:field collection,survey of museum collection
Reason for describing collection:taxonomic analysis
Metadata
Database number:13497
Authorizer:S. Holland, P. Wagner Enterer:T. Hanson, P. Wagner
Modifier:P. Wagner Research group:marine invertebrate
Created:2002-04-05 13:09:23 Last modified:2016-12-13 16:33:55
Access level:the public Released:2002-04-05 13:09:23
Creative Commons license:CC BY
Reference information

Primary reference:
6112. R. W. Macomber. 1970. Articulate Brachiopods from the Upper Bighorn Formation (Late Ordovician) of Wyoming. Journal of Paleontology 44(3):416-450 [S. Holland/T. Hanson/T. Hanson]

Secondary references:

61207 J. E. Bauer and A. L. Stigall. 2016. A combined morphometric and phylogenetic revision of the Late Ordovician brachiopod genera Eochonetes and Thaerodonta. Journal of Paleontology 90(5):888-909 [P. Wagner/P. Wagner]