Species of Schizophoria present in the Pennsylvanian of the American Midcontinent
Morrowan to Missourian; Extinct.
Texas to Kansas.
- Brad Formation (TX)
- Stanton Limestone (KS)
- Stanton Limestone (South Bend Limestone Member) (KS)
- Stanton Limestone (Stoner Limestone Member) (KS)
- Bloyd Shale (Brentwood Limestone Member) (AR, OK)
- Marble Falls Limestone (TX)
- Wapanucka Limestone (OK)