Spiro Sandstone  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Pennsylvanian
 .....Middle Pennsylvanian
 ......Desmoinesian
 .......Spiro Sandstone
RTOklahoma
 Arkansas
 Arkoma Basin
 Savanna Formation
SNDesmoinesian. Arkoma Basin. E Oklahoma, Arkansas. In Savanna Formation. Added to Thesaurus in 1993.