St. Louis Limestone, Salem Formation, Warsaw Formation.
Keokuk Limestone, Burlington Limestone, Elsey Formation, Reeds Spring Formation, Pierson Limestone, Fern Glen Formation.
Shale, clay, coal. Burgner Formation - limestone.
Northview Shale, Sedalia Formation, Compton Limestone, Bachelor Formation Chouteau Group, Hannibal Shale, Horton Creek Limestone.
Fine crystalline, silty, cherty dolomite, and oolitic chert with local sandstone beds.