Where: Butte County, Idaho (43.9° N, 112.9° W: paleocoordinates 5.2° N, 39.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Adetognathus unicornis conodont zone, Arco Hills Formation, Serpukhovian (326.4 - 318.1 Ma)

• Late Chesterian, Mamet Foraminiferal Zone 19

• group of beds-level stratigraphic resolution

Environment/lithology: deep subtidal; lithified packstone

Size class: macrofossils

Primary reference: S. H. Butts. 2007. Silicified Carboniferous (Chesterian) Brachiopoda of the Arco Hills Formation, Idaho. Journal of Paleontology 81(1):48-63 [W. Kiessling/U. Merkel] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 93286: authorized by Wolfgang Kiessling, entered by Uta Merkel on 13.01.2010