Where: Sheridan County, Wyoming (44.4° N, 106.9° W: paleocoordinates 10.1° S, 66.3° W)

• coordinate based on unpublished field data

• outcrop-level geographic resolution

When: Horseshoe Mountain Member (Bighorn Dolomite Formation), Richmondian (449.6 - 445.5 Ma)

• "The red fossiliferous beds, 5 to 8 feet thick, are near the top of the eastward-dipping Bighorn Formation, separated from the overlying Devonian rocks to the east by about 10 feet of conodont-bearing Upper Ordovician limestone."

• formation-level stratigraphic resolution

Environment/lithology: deep subtidal; lithified, red, argillaceous limestone

Size class: macrofossils

Reposited in the FMNH

• also used collections from Miami University, Oxford, Ohio

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 65239: authorized by Steven Holland, entered by Steven Holland on 20.09.2006, edited by Pete Wagner

Creative Commons license: CC BY (attribution)