Graham Formation (Jacksboro Limestone Member) (TX)
Desmoinesian
Altamont Limestone (KS)
Unknown Stage
Cherokee Shale (KS)
Orbiculoidea missouriensis of the Cherokee Shale (see remarks for information regarding this stratigraphic nomenclature), Bourbon County, Kansas (KUMIP 72074).
Virgillian MapDesmoinesian MapStratigraphic position unknown