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
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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

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			Cambrian of Siberia			Permian-Jurassic of New Zealand		Carboniferous of China	Carboniferous of North America	Permian of the Salt Range	Devonian of France
Neogene	Pliocene	Piacenzian	Tertiary †												2.58
	Pliocene	Zanclean													3.6
	Miocene	Messinian													5.333
		Tortonian													7.246
		Serravallian													11.63
		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			Kathwai		251.5 *
Permian	Lopingian	Changhsingian											Kathwai		251.902
															252.4 *
													Chhidru		252.9 *
										Waiitian					253.2
		Wuchiapingian		Longtanian †						Waiitian					254.14
					Puruhauan	254.2
						Kalabagh	255 *
						Wargal	256 *
	Guadalupian	Capitanian			Aparima		Flettian	259.51
		Wordian						264.28
								265.3 *
							Barettian	266
						Amb		266.1 *
		Roadian				Amb		266.9
		Roadian						270.7 *
	Cisuralian	Kungurian						273.01
		Kungurian					Mangapirian	276
		Artinskian					Mangapirian	283.5
							Telfordian	285
								288.5
		Sakmarian						290.1
		Asselian						Bursumian †	293.52
Carboniferous	Pennsylvanian	Gzhelian	Virgilian					298.9
		Gzhelian	Virgilian					Xiaodushanian	300 *
		Kasimovian	Missourian					Xiaodushanian	303.7
			Missourian					Dalaun	305.8 *
			Desmoinesian						305.9 *
		Moscovian	Desmoinesian						307
		Moscovian	Atokan						312.7 *
		Bashkirian	Atokan						315.2
			Morrowan						318.4 *
								Huashibanian	318.5 *
								Lousuan	321.2 *
	Mississippian	Serpukhovian	Dewunian					Chesterian	323.2
		Serpukhovian	Shangsian						330.8 *
		Visean	Shangsian						330.9
			Jiusian						335 *
								Meramecian	335.8 *
								Osagean	343.1 *
		Tournaisian	Tangbagouan					Osagean	346.7
		Tournaisian	Tangbagouan					Kinderhookian	351.9 *
Devonian	Late Devonian	Famennian							Famennian	358.9
	Late Devonian	Frasnian							Frasnian	372.2
	Middle Devonian	Givetian							Givetian	382.7
	Middle Devonian	Eifelian							Couvinien	387.7
	Early Devonian	Emsian								393.3
		Pragian								407.6
		Pragian							Coblencien	408.2 *
		Lochkovian							Gedinnine	410.8
Silurian	Pridoli									419.2
	Ludlow	Ludfordian								423
	Ludlow	Gorstian								425.6
	Wenlock	Homerian								427.4
	Wenlock	Sheinwoodian								430.5
	Llandovery	Telychian								433.4
		Aeronian								438.5
		Rhuddanian								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
		Tremadocian								477.7
		Tremadocian								Mansian †	483.55 *
Cambrian	Furongian	Stage 10								Batyrbaian	Tavgian †	Ketyan †/Yurakian	485.4
		Jiangshanian								Batyrbaian			489.5
										Aksaian			490.7 *
										Sakian			492.2 *
		Paibian											494
		Paibian										Ensyan †/Maduan/Nganasanian	494.7 *
	Miaolingian	Guzhangian								Series 3 †	Ayusokkanian			497
		Guzhangian		Mayan/Menevian							499.5
		Drumian		Mayan/Menevian							500.5
		Wuliuan		Stage 5 †							Amgan/Solvan			504.5
	Series 2	Stage 4									Amgan/Solvan			509
											Toyonian	Lenian †		510 *
											Botomian			512.5 *
		Stage 3				514					Botomian
		Stage 3				Atdabanian						515.6 *
	Terreneuvian	Stage 2				Tommotian						521
		Stage 2				Nemakit-Daldynian						525.5
		Fortunian				Nemakit-Daldynian					Manykaian †	529
															538.8