Lower Mississippian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Mississippian
 .....Lower Mississippian
NTChappel Limestone
 Chouteau Limestone
 Cuyahoga Formation
 Fort Payne Formation
 Joana Limestone
 Kayak Shale
 Kekiktuk Conglomerate
 Kinderhookian
 Lake Valley Formation
 Lodgepole Formation
 Osagian
 Pocono Formation
RTAntrim Shale
 Bakken Formation
 Upper Mississippian
 Catskill Formation
 Waulsortian facies
 Ellesmerian Orogeny
 Pilot Shale
 Rampart Group
 Rundle Group
 Valmeyeran