Crurithyris

Geological Range

Morrowan to Virgilian; Extinct.

Paleogeographic Distribution

Texas to Iowa.

Stratigraphic Occurrences

Virgilian

Bern Limestone (Wakarusa Limestone Member) (OK)

Bern Limestone (Burlingame Limestone Member) (KS)

Deer Creek Limestone (Larsh-Burroak Shale Member) (OK)

Foraker Limestone (OK)

Graham Formation (TX)

Graham Formation (Wayland Shale Member) (TX)

Graham Formation (Gunsight Limestone Member) (TX)

Graham Formation (Jacksboro Limestone Member) (TX)

Graham Formation (Finis Shale Member) (TX)

Howard Formation (KS)

Howard Formation (MO)

Howard Formation (Aarde Shale Member) (KS)

Kanwaka Shale (KS)

Kanwaka Shale (Stull Shale Member) (KS)

Lawrence Formation (KS)

Lecompton Limestone (KS)

Lecompton Limestone (Beil Limestone Member) (KS)

Lecompton Limestone (Spring Branch Limestone Member) (NE)

Oread Limestone (KS, NE)

Oread Limestone (Heebner Shale Member) (KS)

Oread Limestone (Kereford Limestone Member) (KS)

Oread Limestone (Plattsmouth Limestone Member) (KS, NE)

Oread Limestone (Snyderville Shale Member) (KS)

Oread Limestone (Snyderville Shale Member) (NE)

Oread Limestone (Toronto Limestone Member) (KS)

Oread Limestone (Toronto Limestone Member) (NE)

Pawhuska Formation (OK)

Root Shale (Friedrich Shale Member) (KS)

Scranton Shale (Silver Lake Shale Member) (NE)

Stotler Limestone (Dover Limestone Member) (KS)

Stranger Formation (Weston Shale Member) (KS)

Stranger Formation (Westphalia Limestone Member) (KS)

Tecumseh Shale (Rakes Creek Member) (KS)

Wood Siding Formation (Brownville Limestone Member) (OK, KS)

Wood Siding Formation (Plumb Shale Member) (KS)

Missourian

Bond Formation (La Salle Limestone Member) (IL)

Brad Formation (TX)

Checkerboard Formation (KS)

Cherryvale Shale (Block Limestone Member) (MO)

Cherryvale Shale (Quivira Shale Member) (MO)

Dennis Limestone (Winterset Limestone Member) (KS, MO)

Dewey Formation (Quivira Shale Member) (MO)

Hertha Limestone (KS)

Hertha Limestone (Mound City Shale Member) (KS)

Iola Limestone (Avant Limestone Member) (OK)

Ladore Shale (KS)

Lane Shale (KS)

Plattsburg Limestone (OK)

Plattsburg Limestone (Hickory Creek Shale Member) (KS)

Plattsburg Limestone (Spring Hill Limestone Member) (KS)

Stanton Limestone (OK, KS)

Stanton Limestone (Captain Creek Limestone Member) (KS)

Stanton Limestone (Eudora Shale Member) (OK, KS)

Stanton Limestone (Stoner Limestone Member) (KS)

Stranger Formation (MO)

Tacket Formation (KS)

Tallant Formation (Bigheart Sandstone Member) (OK)

Wann Formation (OK)

Wyandotte Limestone (Argentine Limestone Member) (IA)

Wyandotte Limestone (Farley Limestone Member) (KS)

Wyandotte Limestone (Island Creek Shale Member) (IA)

Desmoinesian

Allegheny Formation (Putnam Hill Limestone Member) (OH)

Altamont Limestone (KS)

Altamont Limestone (Worland Limestone Member) (MO)

Boggy Formation (OK)

Cabaniss Formation (Verdigris Limestone Member) (OK)

Fort Scott Limestone (KS)

Holdenville Shale (OK)

Labette Shale (MO)

Labette Shale (OK)

Lenapah Limestone (OK, KS)

Millsap Lake Formation (TX)

Mineral Wells Formation (TX)

Pawnee Limestone (KS, IA)

Wewoka Formation (OK)

Wetumka Formation (OK)

Morrowan

Morrow Formation (OK)

Unknown Stage

Bourbon Formation (KS)

Cherokee Shale (KS)

Coal Measures (NE)

Magdalena Limestone (CO)