Kittanning Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Pennsylvanian
 .....Kittanning Formation
RTKentucky
 Indiana
 Ohio
 Pennsylvania
 Maryland
 West Virginia
 Allegheny Group
SNIn Allegheny Group. Added to Thesaurus in 1989.