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BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Arbuckle Group
RTLower Ordovician
 Oklahoma
 Kindblade Formation
 Upper Cambrian
SNUpper Cambrian and Lower Ordovician. Subdivided into Fort Sill Limestone, Royer Marble, Signal Mountain Limestone, Chapman Ranch Dolomite, Wolf Creek Dolomite, Cool Creek Limestone, Alden Limestone, and West Spring Creek Formation. S Oklahoma. Indexed wit