Where: Oklahoma (34.3° N, 96.4° W: paleocoordinates 10.4° S, 35.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Caney Formation, Arnsbergian (327.0 - 323.7 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified, condensed shale

Size class: macrofossils

Collected by G.B. Richardson, G.H. Girty in 1898; 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 158039: authorized by Matthew Clapham, entered by Matthew Clapham on 13.07.2014

Creative Commons license: CC BY (attribution)