Where: Cass County, Nebraska (42.0° N, 95.9° W: paleocoordinates 0.1° N, 26.7° W)

• coordinate stated in text

When: Streptognathodus simulator conodont zone, Plattsmouth Limestone Member (Oread Formation), Rusavkinian (303.7 - 302.2 Ma)

• Lower Gzhelian, correlative to Rusavkian of Russian Platform.

Environment/lithology: marine; shale

Size class: mesofossils

Reposited in the USNM

• Bathronocrinus wolfriverensis specimens collected by G E. Condra and M. K. Elias

Primary reference: R. K. Pabian and W. J. Rushlau. 2002. Taphonomic Analysis and Systematic Descriptions of Some Late Pennsylvanian and Early Permian Crinoids from Southeastern Nebraska, Eastern Kansas and Southwestern Iowa. Nebraska Geological Survey Paper Geological Survey Papers 20:1-45 [J. Alroy/B. Mamo/P. Wagner]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 124434: authorized by John Alroy, entered by Briony Mamo on 15.02.2012

Creative Commons license: CC BY (attribution)