Where: Arkansas (35.8° N, 91.9° W)

• Paleocoordinates: 18.6° S, 38.7° W (Wright 2013)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Fayetteville Formation, Pendleian (330.9 - 327.0 Ma)

• Probably weathered from lower part of Fayetteville shale.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified shale

Size class: macrofossils

Preservation: replaced with silica

Collected by M. Gordon, R. Kopf in 1954; reposited in the USNM

Collection methods: surface (float)

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 160555: authorized by Matthew Clapham, entered by Matthew Clapham on 24.08.2014

Creative Commons license: CC0 (CC0)