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
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			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
		Kasimovian						303.7
		Moscovian						307
		Bashkirian						315.2
	Mississippian	Serpukhovian						323.2
		Visean						330.9
		Tournaisian						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									443.8
		Katian									445.2
		Sandbian									453
	Middle Ordovician	Darriwilian									458.4
	Middle Ordovician	Dapingian									467.3
	Early Ordovician	Floian									470
	Early Ordovician	Tremadocian									477.7
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