Savanna Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Pennsylvanian
 .....Middle Pennsylvanian
 ......Desmoinesian
 .......Savanna Formation
RTOklahoma
 Arkansas
 Spiro Sandstone
 Krebs Group
SNIn Krebs Group. Includes Spaniard Limestone Member, Spiro Sandstone, Sam Creek Limestone, Doneley Limestone. W Arkansas and E and S Oklahoma. Also search Savanna.