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			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						Geneseean/Taghanican/Tioughniogan	Cazenovian	Late Givetian	382.7
										Middle Givetian	383.7 *
										Early Givetian	385.9 *
		Eifelian		Southwoodian				Late Eifelian		387.7
		Eifelian		Southwoodian				Early Eifelian		390.3 *
	Early Devonian	Emsian		Sawkillian/Deer Parkian				Helderbergian	Late Emsian	393.3
		Emsian		Sawkillian/Deer Parkian					Early Emsian	398.3 *
		Pragian							Pragian	407.6
		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