Description
Cyclus americanus
Pennsylvanian
Francis Creek Shale
Pit 11, Kankakee County
Illinois, USA.
12mm cycloid arthropod on 32mm paired concretion

Cyclus americanus
Pennsylvanian
Francis Creek Shale
Pit 11, Kankakee County
Illinois, USA.
12mm cycloid arthropod on 32mm paired concretion