Gastropoda, Cephalopoda, and Trilobita of the Amsden Formation (Mississippian and Pennsylvanian) of Wyoming
Explore the source record for details and available documents.
Professional Paper↗
Geology topics
Ellis Leon Yochelson
Publications and source records attributed to Ellis Leon Yochelson.
Teiichispira, a new Early Ordovician gastropod genus
Explore the source record for details and available documents.
Professional Paper↗