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
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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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			Devonian of Czechoslovakia	Cambrian of Britain		Cretaceous-Cenozoic of New Zealand		Devonian of Eastern North America		Permian of the Pamirs	Permian-Jurassic of New Zealand		Cambrian of North America
Quaternary	Holocene	Meghalayan							Wanganui	Haweran							0
		Northgrippian															0.0042
		Greenlandian															0.0082
	Pleistocene	Late Pleistocene															0.0117
		Chibanian															0.129
		Chibanian								Castlecliffian							0.34
		Calabrian								Castlecliffian							0.774
		Calabrian								Nukumaruan							1.63
		Gelasian								Nukumaruan							1.8
		Gelasian								Mangapanian							2.4
Neogene	Pliocene	Piacenzian	Tertiary †							Mangapanian							2.58
		Piacenzian								Waipipian							3
		Zanclean								Waipipian							3.6
		Zanclean								Opoitian							3.7
	Miocene	Messinian							Taranaki	Kapitean							5.333
		Messinian								Tongaporutuan							7.2
		Tortonian								Tongaporutuan							7.246
		Tortonian							Southland	Waiauan							11.04
		Serravallian								Waiauan							11.63
		Serravallian								Lillburnian							13.05
		Langhian								Lillburnian							13.82
										Clifdenian							15.1
									Pareora	Altonian							15.9
		Burdigalian								Altonian							15.98
		Burdigalian								Otaian							18.7
		Aquitanian								Otaian							20.44
		Aquitanian							Landon	Waitakian							21.7
Paleogene	Oligocene	Chattian								Waitakian							23.03
										Duntroonian							25.2
										Whaingaroan							27.3
		Rupelian															27.82
	Eocene	Priabonian															33.9
									Arnold	Runangan							34.6
										Kaiatan							36.7
		Bartonian								Kaiatan							37.71
		Bartonian								Bortonian							39.1
		Lutetian								Bortonian							41.2
									Dannevirke	Porangan							42.6
										Heretaungan							45.7
		Ypresian								Heretaungan							47.8
										Mangaorapan							48.9
										Waipawan							52
	Paleocene	Thanetian								Teurian							56
		Selandian															59.2
		Danian															61.6
Cretaceous	Late Cretaceous	Maastrichtian							Mata	Haumurian							66
		Campanian								Haumurian							72.1
		Santonian								Piripauan							83.6
		Santonian							Raukumara	Teratan							86.1
		Coniacian															86.3
		Turonian															89.8
										Mangaotanean							90.5
										Arowhanan							93.7
		Cenomanian								Arowhanan							93.9
									Clarence	Ngaterian							95.2
										Motuan							99.5
	Early Cretaceous	Albian								Motuan							100.5
										Urutawan							103.3
									Taitai	Korangan							108.4
		Aptian								Korangan							113
		Aptian															117.5
		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	Dorashamian	251.902
		Changhsingian				Waiitian	Dorashamian	253.2
		Wuchiapingian				Waiitian	Longtanian †	Dzhulfian	254.14
		Wuchiapingian				Puruhauan	Longtanian †	Dzhulfian	254.2
	Guadalupian	Capitanian				Midian	Aparima	Flettian	259.51
		Wordian						Flettian	264.28
								Barettian	266
						Murgabian			266.2 *
		Roadian				Murgabian			266.9
	Cisuralian	Kungurian				Kubergandian			273.01
						Kubergandian		Mangapirian	276
						Bolorian			279.8
		Artinskian							283.5
								Telfordian	285
			Yakhtashian			286		Telfordian
			Yakhtashian					288.5
		Sakmarian	Sakmarian					290.1
		Asselian	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	Late Famennian		358.9
									Middle Famennian		365.3 *
									Early Famennian		368.5 *
		Frasnian						West Fallsian/Sonyean	Late Frasnian		372.2
									Middle Frasnian	375.4 *
									Early Frasnian	379.3 *
	Middle Devonian	Givetian						Srbsko	Geneseean/Taghanican/Tioughniogan	Cazenovian	Late Givetian	382.7
											Middle Givetian	383.7 *
											Early Givetian	385.9 *
		Eifelian		Chotec				Southwoodian	Late Eifelian		387.7
		Eifelian		Chotec				Southwoodian	Early Eifelian		390.3 *
	Early Devonian	Emsian		Daleje/Zlichovian				Sawkillian/Deer Parkian	Helderbergian	Late Emsian	393.3
		Emsian		Daleje/Zlichovian				Sawkillian/Deer Parkian		Early Emsian	398.3 *
		Pragian		Pragian						Pragian	407.6
		Lochkovian		Lochkovian						Late Lochkovian	410.8
										Middle Lochkovian	412.8 *
										Early Lochkovian	415.6 *
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
	Early Ordovician	Tremadocian									477.7
Cambrian	Furongian	Stage 10									Merioneth	Dolgellian/Trempealeauan	Franconian †/Dresbachian/Millardan	485.4
												Dolgellian/Trempealeauan		Sunwaptan	487.5
												Festiniogian			489.2 *
		Jiangshanian													489.5
														Steptoean	493 *
												Maentwrogian			493.1 *
		Paibian										Maentwrogian			494
	Miaolingian	Guzhangian									Series 3 †	St Davids		Marjumian	Albertian †	497
		Drumian												Marjumian		500.5
		Wuliuan			Stage 5 †									Topazan		504.5
		Wuliuan			Stage 5 †									Delamaran		506.5
	Series 2	Stage 4										Caerfai		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