Derbyia crassa
- Phylum: Brachiopoda-Articulata
- Class: Strophomenata
- Order: Orthotetida
- Family: Derbyiidae
- Genus: Derbyia
- Species: Derbyia crassa
Geological Range
Desmoinesian to Virgilian; Extinct.
Paleogeographic Distribution
Texas to Iowa.
Stratigraphic Occurrences
- Virgilian
- Graham Formation (Wayland Shale Member) (TX)
- Howard Formation (Church Limestone Member) (KS)
- Missourian
- Bonner Springs Shale (KS)
- Chanute Shale (MO)
- Checkerboard Formation (OK, KS)
- Cherryvale Formation (IA)
- Cherryvale Formation (Fontana Shale Member) (IA)
- Cherryvale Shale (MO)
- Coffeyville Formation (OK)
- Dennis Limestone (Stark Shale Member) (KS)
- Dennis Limestone (Winterset Limestone Member) (KS, MO)
- Drum Limestone (KS)
- Hertha Limestone (KS)
- Hertha Limestone (MO)
- Hertha Limestone (Mound City Shale Member) (KS)
- Iola Limestone (KS)
- Iola Limestone (Raytown Limestone Member) (KS)
- Iola Limestone (Raytown Limestone Member) (MO)
- Plattsburg Limestone (Spring Hill Limestone Member) (KS)
- Stanton Limestone (KS)
- Stanton Limestone (Eudora Shale Member) (KS)
- Stanton Limestone (Stoner Limestone Member) (KS)
- Swope Limestone (Bethany Falls Limestone Member) (KS)
- Swope Limestone (Middle Creek Limestone Member) (KS)
- Vilas Shale (KS)
- Wyandotte Formation (Frisbie Limestone Member) (MO)
- Wyandotte Limestone (Farley Limestone Member) (KS)
- Desmoinesian
- Altamont Limestone (KS)
