Upper Permian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Permian
 ....Upper Permian
NTBarabash Suite
 Cadeby Formation
 Kazanian
 Permian-Triassic boundary
 Raniganj Formation
 Salado Formation
 Tatarian
 Usuginu Conglomerate
 Vetluga Series
 Zechstein
RTGuadalupian
 Lower Permian
 Middle Permian