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