Hunt Mountain (Ordovician of the United States)

Where: Sheridan County, Wyoming (44.7° N, 107.7° W: paleocoordinates 9.4° S, 66.4° W)

• coordinate based on unpublished field data

• outcrop-level geographic resolution

When: Horseshoe Mountain Member (Bighorn Dolomite Formation), Richmondian (449.5 - 443.7 Ma)

• member-level stratigraphic resolution

Environment/lithology: deep subtidal; lithified, argillaceous limestone

• Environment and tectonic setting based on unpublished field notes of SMH
• argillaceous limestone

Size class: macrofossils

Primary reference: 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]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 13497: authorized by Steven Holland, entered by Tori Hanson on 05.04.2002, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Strophomenata
 Strophomenida - Sowerbyellidae
Eochonetes maearum Bauer and Stigall 2016
 Strophomenida - Furcitellidae
Megamyonia nitens Billings 1860
 Strophomenida - Strophomenidae
"Strophomena planocorrugata" = Rugomena planocorrugata, "Strophomena fluctuosa" = Nasutimena fluctuosa
"Strophomena planocorrugata" = Rugomena planocorrugata Twenhofel 1928
"Strophomena fluctuosa" = Nasutimena fluctuosa Billings 1860
Rhynchonellata
 Rhynchonellida - Rhynchotrematidae
Hypsiptycha cf. neenah Whitfield 1882
"Lepidocyclus gigas" = Hiscobeccus gigas Wang 1949
 Orthida - Plaesiomyidae
 Orthida - Hesperorthidae
 Orthida - Platystrophiidae
"Platystrophia prayi" = Gnamptorhynchos prayi Howe 1966
 Orthida - Platyorthidae
Diceromyonia storeya Okulitch 1943
 Atrypida - Cyclospiridae
 Atrypida - Anazygidae
"Zygospira aequivalvis" = Anazyga aequivalvis
"Zygospira aequivalvis" = Anazyga aequivalvis Twenhofel 1928