Where: Washington County, Arkansas (36.1° N, 94.1° W: paleocoordinates 10.0° S, 33.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Eumorphoceras milleri ammonoid zone, Fayetteville Formation, Pendleian (330.9 - 327.0 Ma)

• Fayetteville shale, 3-ft zone about 40 ft stratigraphically below base of Wedington sandstone member.

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified, concretionary, ferruginous shale

Size class: macrofossils

Collected by J.N. Payne, R.E. Baker; reposited in the USNM

Primary reference: M. Gordon. 1964. Carboniferous Cephalopods of Arkansas. United States Geological Survey Professional Paper 460:1-322 [J. Alroy/C. Simpson/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 157936: authorized by Matthew Clapham, entered by Matthew Clapham on 11.07.2014

Creative Commons license: CC BY (attribution)