Where: Arkansas (35.8° N, 94.4° W: paleocoordinates 10.2° S, 33.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• Upper part

• bed-level stratigraphic resolution

Environment/lithology: marine; lithified shale

Size class: macrofossils

Collected by R.D. Mesler in 1904; 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

PaleoDB collection 160495: authorized by Matthew Clapham, entered by Matthew Clapham on 23.08.2014

Creative Commons license: CC BY (attribution)