Euconospira

Geological Range

Morrowan to Virgilian; Extinct.

Paleogeographic Distribution

Texas to Nebraska.

Stratigraphic Occurrences

Virgilian

Emporia Limestone (OK)

Graham Formation (TX)

Oread Limestone (NE)

Oread Limestone (Toronto Limestone Member) (KS)

Stranger Formation (Weston Shale Member) (KS)

Missourian

Bonner Springs Shale (KS)

Brad Formation (Ranger Limestone Member) (TX)

Chanute Shale (MO)

Cherryvale Shale (Westerville Limestone Member) (KS)

Drum Limestone (KS)

Drum Limestone (Dewey Limestone Member) (OK)

Graford Formation (Brownwood Shale Member) (TX)

Iola Limestone (KS)

Plattsburg Limestone (Merriam Limestone Member) (KS)

Plattsburg Limestone (Spring Hill Limestone Member) (KS)

Stanton Limestone (KS)

Stanton Limestone (Captain Creek Limestone Member) (KS)

Stanton Limestone (Stoner Limestone Member) (KS)

Swope Limestone (Bethany Falls Limestone Member) (KS)

Vilas Shale (KS)

Wyandotte Limestone (Argentine Limestone Member) (KS)

Wyandotte Limestone (Farley Limestone Member) (KS)

Desmoinesian

Big Branch Formation (OK)

Big Branch Formation (Pumpkin Creek Limestone Member) (OK)

East Mountain Shale (TX)

Lake Murray Formation (Frensley Member) (OK)

Millsap Lake Formation (TX)

Atokan

Atoka Formation (OK)

Morrowan

Bloyd Shale (Brentwood Limestone Member) (OK)

Unknown Stage

Coal Measures (IL)