Promytilus

Geological Range

Desmoinesian to Virgilian (also Permian); Extinct.

Paleogeographic Distribution

Texas to Missouri.

Stratigraphic Occurrences

Virgilian

Calhoun Shale (KS)

Graham Formation (Wayland Shale Member) (TX)

Kanwaka Shale (Stull Shale Member) (KS)

Oread Limestone (Heumader Shale Member) (KS)

Oread Limestone (Kereford Limestone Member) (KS)

Stranger Formation (Vinland Shale Member) (KS)

Willard Shale (KS)

Missourian

Bonner Springs Shale (KS)

Cherryvale Shale (Block Limestone Member) (MO)

Cherryvale Shale (Fontana Shale Member) (MO)

Cherryvale Shale (Westerville Limestone Member) (KS, MO)

Dennis Limestone (Winterset Limestone Member) (KS)

Drum Limestone (KS)

Drum Limestone (MO)

Graford Formation (Brownwood Shale Member) (TX)

Iola Limestone (Avant Limestone Member) (OK)

Plattsburg Limestone (KS)

Plattsburg Limestone (Spring Hill Limestone Member) (KS)

Stanton Limestone (KS)

Stanton Limestone (Rock Lake Shale Member) (KS)

Stanton Limestone (South Bend Limestone Member) (KS)

Stanton Limestone (Stoner Limestone Member) (KS)

Vilas Shale (KS)

Wyandotte Limestone (Farley Limestone Member) (KS)

Desmoinesian

Holdenville Shale (Sasakwa Limestone Member) (OK)

Unknown Stage

Coal Measures (KS)

Coal Measures (MO)