Where: Pinal County, Arizona (32.9° N, 110.6° W: paleocoordinates 23.4° S, 56.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Polygnathus styriacus conodont zone, Percha Formation, Famennian (372.2 - 358.9 Ma)

• middle third of the upper (carbonate) unit of the Percha Formation, conodonts and brachiopods suggest a Late Famennian age (upper Polygnathus styriacus zone)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, dolomitic, silty wackestone

Size class: macrofossils

Primary reference: J. K. Rigby, D. Schumacher, and S. J. Meader. 1979. The genus Ensiferites, a Devonian astraeosponge of North America. Journal of Paleontology 53(2):475-493 [W. Kiessling/U. Merkel]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 111889: authorized by Wolfgang Kiessling, entered by Uta Merkel on 29.06.2011

Creative Commons license: CC BY (attribution)