Bigby-Cannon Limestone  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Middle Ordovician
 .....Bigby-Cannon Limestone
RTTennessee
SNContemporary facies comprising this unit are Bigby Limestone and Cannon Limestone. Overlies Hermitage Formation and underlies Catheys Formation. Central Tennessee.