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BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Mississippian
 .....Upper Mississippian
 ......Meramecian
NTSaint Louis Limestone
 Sainte Genevieve Limestone
 Salem Limestone
 Spergen Formation
 Warsaw Formation
RTChesterian
 Boone Formation
 Valmeyeran
SNProvincial series, North America. Above Osagian, below Chesterian.