Prairie Bluff Chalk  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Upper Cretaceous
 .....Gulfian
 ......Prairie Bluff Chalk
RTMississippi
 Alabama
 Selma Group
SNIn Selma Group. SW Mississippi and Alabama. Added to Thesaurus in 1995.