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
A. G. Sennikov and V. K. Golubev. 2006. Vyazniki Biotic Assemblage of the Terminal Permian. Paleontological Journal 40(suppl. 4):S475-S481 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			Permo-Triassic Subages of Eastern Europe	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				Vokhmian								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 †		Late Vyatkian/Early Vyatkian						Zechstein		Waiitian					254.14
		Wuchiapingian		Longtanian †		Late Vyatkian/Early Vyatkian						Zechstein		Puruhauan					254.2
	Guadalupian	Capitanian			Late Severodvinian/Early Severodvinian	Rotliegendes	Aparima	Flettian	259.51
		Wordian			Late Urzhumian/Early Urzhumian			Flettian	264.28
		Wordian			Late Urzhumian/Early Urzhumian			Barettian	266
		Roadian			Late Kazanian/Early Kazanian				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