Chonetes

Geological Range

Atokan to Virgilian (also Permian); Extinct.

Paleogeographic Distribution

Texas to Nebraska.

Stratigraphic Occurrences

Virgilian

Graham Formation (Wayland Shale Member) (TX)

Harpersville Formation (TX)

Harpersville Formation (Waldrip Shale Member) (TX)

Kanwaka Shale (Stull Shale Member) (KS)

Stranger Formation (OK)

Topeka Limestone (Coal Creek Limestone Member) (KS)

Missourian

Drum Limestone (KS)

Iola Limestone (KS)

Stanton Limestone (Stoner Limestone Member) (KS)

Tallant Formation (Bigheart Sandstone Member) (OK)

Desmoinesian

Altamont Limestone (OK)

Millsap Lake Formation (TX)

Mineral Wells Formation (TX)

Wewoka Formation (OK)

Atokan

Marble Falls Limestone (TX)

Unknown Stage

Coal Measures (NE)