Where: Arkansas (36.1° N, 93.0° W: paleocoordinates 10.5° S, 32.5° 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, roughly 60 ft above base.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, concretionary shale

Size class: macrofossils

Collected by M. Gordon, R. Kopf in 1954; 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 157945: authorized by Matthew Clapham, entered by Matthew Clapham on 11.07.2014

Creative Commons license: CC BY (attribution)