Permian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Permian
NTCisuralian
 Guadalupian
 Lopingian
 Akiyoshi Limestone
 Americus Limestone Member
 Appalachian Phase
 Blaine Formation
 Buckley Formation
 Bulli Seam
 Castile Formation
 Chase Group
 Coconino Sandstone
 Cottonwood Limestone
 Council Grove Group
 Culebra Dolomite Member
 Cutler Formation
 Damuda Series
 Ecca Group
 Eskridge Shale
 Esplanade Sandstone Member
 Fort Riley Limestone
 Glorieta Sandstone
 Hennessey Formation
 Hughes Creek Shale
 Hutchinson Salt Member
 Illawarra Coal Measures
 Irati Formation
 Kaibab Formation
 Kamthi Formation
 Khuff Formation
 Kungurian
 Lower Permian
 Lyons Sandstone
 Maokou Formation
 McCloud Limestone
 Meade Peak Member
 Middle Permian
 Newcastle Coal Measures
 Park City Formation
 Passa Dois Group
 Phosphoria Formation
 Ranger Canyon Formation
 Red Eagle Limestone
 Retort Phosphatic Shale Member
 Rio Bonito Formation
 Rotliegendes
 Rustler Formation
 Saalian Phase
 Saxonian
 Stearns Shale
 Stone Corral Formation
 Thuringian
 Toroweap Formation
 Upper Permian
 Val Gardena Sandstone
 Vryheid Formation
 Wellington Formation
 Werra Series
 Wreford Limestone
 Yates Formation
 Yeso Formation
RTDwyka Formation
 Alleghany Orogeny
 Brianconnais Zone
 Beacon Supergroup
 Baralaba Coal Measures
 Baskunchak Series
 Beaufort Group
 Botucatu Formation
 Cache Creek Group
 Calaveras Formation
 Casper Formation
 Chugwater Formation
 Dunkard Group
 Estrada Nova Formatio
SNAbove Carboniferous, below Triassic (Mesozoic).
Permian Basin  search
BTUnited States
 .Permian Basin
RTNew Mexico
 Texas
 Central Basin Platform
 Brushy Canyon Formation
 Delaware Basin
 Marfa Basin
 Midland Basin
SNStructural basin in W Texas and SE New Mexico. Includes Midland, Delaware, and Marfa basins. Indexed with states or regions as applicable. Added to Thesaurus in 1981.
Permian-Triassic boundary  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Triassic
 ....Lower Triassic
 .....Permian-Triassic boundary
BTstratigraphic boundary
 .Permian-Triassic boundary
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Permian
 ....Upper Permian
 .....Permian-Triassic boundary
UFP-T boundary (age)
 P/T boundary (age)
RTKarroo Supergroup
 Beacon Supergroup
 Baskunchak Series
 Beaufort Group
 Botucatu Formation
 Estrada Nova Formation
 Cache Creek Group
 Chugwater Formation
 Korenevskaya Formation
 Eagle Mills Formation
 Gondwana System
 Goose Egg Formation
 Ivishak Formation
 Louann
SNBefore 1998, also search Permian-Triassic; (Permian AND Triassic AND (stratigraphic boundary or boundary)). This term has multiple hierarchies. Added to Thesaurus in 1998.