Desmoinesian (Middle Pennsylvanian) Orthocerid Cephalopods from the Buckhorn Asphalt Lagerstätte in Oklahoma, Midcontinent North America
Niko, Shuji and Seuss, Barbara and Mapes, Royal H., Paleontological Research, 22, 20-36 (2018), DOI:http://dx.doi.org/10.2517/2017PR008