PBDB Timescale

Obsolete Names for ICS Units

The interval definitions in this timescale are derived from the following sources:

W. B. Harland, R. L. Armstrong, A. V. Cox, L. E. Craig, A. G. Smith and D. G. Smith. 1990. A Geologic Time Scale 1989. view
K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
J. I. Raine, A. G. Beu, A. F. Boyes, H. J. Campbell, R. A. Cooper, J. S. Crampton, M. P. Crundwell, C. J. Hollis, and H. E. G. Morgans. 2015. Revised Calibration of the New Zealand Geological Timescale: NZGT2015/1. GNS Science Report 2012(39) view
M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view

There are 55 timescales which overlap this one. show

Interval boundaries marked with * have been interpolated based on the differences between the ages for international timescale boundaries quoted in the source and the currently accepted ages for those boundaries.

Interval names marked with † are no longer in current use.

This timescale is used in the definition of 92 collections

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International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Ordovician of China			Carboniferous of China	Silurian of England	Permian of Western Europe	Permian-Jurassic of New Zealand		Central Paratethys Stages	Devonian of Eastern North America		Cambrian of North America
Neogene	Pliocene	Piacenzian	Tertiary †															2.58
	Pliocene	Zanclean																3.6
	Miocene	Messinian																5.333
		Tortonian												Pannonian				7.246
		Serravallian												Sarmatian				11.63
		Serravallian												Badenian				12.8 *
		Langhian																13.82
		Burdigalian																15.98
		Aquitanian																20.44
Paleogene	Oligocene	Chattian																23.03
	Oligocene	Rupelian																27.82
	Eocene	Priabonian																33.9
		Bartonian																37.71
		Lutetian																41.2
		Ypresian																47.8
	Paleocene	Thanetian																56
		Selandian																59.2
		Danian																61.6
Cretaceous	Late Cretaceous	Maastrichtian																66
		Campanian																72.1
		Santonian																83.6
		Coniacian																86.3
		Turonian																89.8
		Cenomanian																93.9
	Early Cretaceous	Albian																100.5
		Aptian																113
		Barremian																121.4
		Hauterivian																125.77
		Valanginian																132.6
		Berriasian																139.8
Jurassic	Late Jurassic	Tithonian										Oteke	Puaroan					145
		Kimmeridgian										Oteke	Puaroan					149.2
												Kawhia	Ohauan					150
													Heterian					154.5
		Oxfordian																154.8
	Middle Jurassic	Callovian																161.5
		Callovian											Temaikan					164.3
		Bathonian																165.3
		Bajocian																168.2
		Aalenian																170.9
	Early Jurassic	Toarcian																174.7
		Toarcian										Herangi	Ururoan					176
		Pliensbachian											Ururoan					184.2
		Pliensbachian											Aratauran					188.9
		Sinemurian																192.9
		Hettangian																199.5
Triassic	Late Triassic	Rhaetian										Balfour	Otapirian					201.4
		Norian											Warepan					208.5
													Otamitan					217
													Oretian					221
		Carnian											Oretian					227
		Carnian										Gore	Kaihikuan					227.5
	Middle Triassic	Ladinian											Kaihikuan					237
		Ladinian											Etalian					238
		Anisian											Etalian					242
		Anisian											Malakovian					246
	Early Triassic	Olenekian											Malakovian					247.2
		Olenekian											Nelsonian					249
		Induan											Nelsonian					251.2
		Induan										DUrville	Makarewan					251.5
Permian	Lopingian	Changhsingian											Makarewan					251.902
		Changhsingian											Waiitian					253.2
		Wuchiapingian		Longtanian †							Zechstein		Waiitian					254.14
		Wuchiapingian		Longtanian †							Zechstein		Puruhauan					254.2
	Guadalupian	Capitanian			Rotliegendes	Aparima	Flettian	259.51
		Wordian					Flettian	264.28
		Wordian					Barettian	266
		Roadian						266.9
	Cisuralian	Kungurian						273.01
		Kungurian					Mangapirian	276
		Artinskian			Autunian		Mangapirian	283.5
							Telfordian	285
								288.5
		Sakmarian						290.1
		Asselian						293.52
Carboniferous	Pennsylvanian	Gzhelian						298.9
		Gzhelian						Xiaodushanian	300 *
		Kasimovian						Xiaodushanian	303.7
		Kasimovian						Dalaun	305.8 *
		Moscovian							307
		Bashkirian							315.2
								Huashibanian	318.5 *
			Lousuan					321.2 *
	Mississippian	Serpukhovian	Dewunian					323.2
		Serpukhovian	Shangsian					330.8 *
		Visean	Shangsian					330.9
		Visean	Jiusian					335 *
		Tournaisian	Tangbagouan					346.7
Devonian	Late Devonian	Famennian						Conewangan/Conneautan/Canadaway	358.9
	Late Devonian	Frasnian						West Fallsian/Sonyean	372.2
	Middle Devonian	Givetian						Geneseean/Taghanican/Tioughniogan	Cazenovian	382.7
	Middle Devonian	Eifelian						Southwoodian	Cazenovian	387.7
	Early Devonian	Emsian						Sawkillian/Deer Parkian	Helderbergian	393.3
		Pragian								407.6
		Lochkovian								410.8
Silurian	Pridoli								Red Downtonian/Temeside Shales/Downton Castle	Whitcliffe/Leintwardine	419.2
	Pridoli								Red Downtonian/Temeside Shales/Downton Castle	Bringewood/Elton	421.3
	Ludlow	Ludfordian							Coalbrookdale	Wenlock (England)/Tickwood	423
		Gorstian									425.6
		Gorstian								Buildwas	426.4 *
	Wenlock	Homerian								Buildwas	427.4
		Homerian							Wych	Woolhope	428.4 *
		Sheinwoodian									430.5
	Llandovery	Telychian									433.4
		Telychian									436.3 *
		Aeronian									438.5
		Aeronian							Cowleigh Park		439.3 *
		Rhuddanian							Cowleigh Park		440.8
Ordovician	Late Ordovician	Hirnantian							Hirnantian		Xiaoxita †/Shikou	Wufeng †		443.8
		Katian							Chientangkiangian			Wufeng †		445.2
		Katian							Neichianshanian/Hanjiang					449.5
		Sandbian							Neichianshanian/Hanjiang					453
	Middle Ordovician	Darriwilian							Darriwilian		Guniu †/Hulo			458.4
		Darriwilian							Darriwilian		Hunjiang †	Dawan †/Daobaowan/Ningkuo		466.3 *
		Dapingian							Dapingian					467.3
	Early Ordovician	Floian							Yiyangian					470
		Tremadocian							Xinchangian					477.7
		Tremadocian							Xinchangian			Lianghekou †		477.9 *
Cambrian	Furongian	Stage 10												Franconian †/Dresbachian/Millardan	485.4
		Stage 10													Sunwaptan	487.5
		Jiangshanian													Sunwaptan	489.5
		Jiangshanian													Steptoean	493 *
		Paibian													Steptoean	494
	Miaolingian	Guzhangian												Series 3 †	Marjumian	Albertian †	497
		Drumian													Marjumian		500.5
		Wuliuan		Stage 5 †											Topazan		504.5
		Wuliuan		Stage 5 †											Delamaran		506.5
	Series 2	Stage 4													Delamaran	Waucoban †	509
		Stage 4													Dyeran		511 *
		Stage 3													Dyeran		514
															Montezuman		514.8 *
															Begadean		519.9 *
	Terreneuvian	Stage 2															521
	Terreneuvian	Fortunian															529
																		538.8