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
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 the Baltic	Permian-Jurassic of New Zealand		Cambrian of West Avalonia	Devonian of Eastern North America		Carboniferous of North America	Permian of the Pamirs	Permian of China	Cretaceous-Cenozoic of New Zealand
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	Meishanian	251.902
					Waiitian			Meishanian	253.2
								Baoqingian	253.4 *
		Wuchiapingian					Longtanian †	Dzhulfian	Laoshanian	254.14
					Puruhauan				Laoshanian	254.2
					Puruhauan				Laibinian	257.7 *
	Guadalupian	Capitanian			Aparima		Flettian	Midian	Lengwuan	259.51
		Wordian					Flettian		Kuhfengian	264.28
							Barettian			266
								Murgabian		266.2 *
		Roadian						Murgabian		266.9
	Cisuralian	Kungurian						Kubergandian	Luodianian	273.01
							Mangapirian	Kubergandian		276
								Bolorian		279.8
		Artinskian	283.5
			Telfordian				285
							Longlinian		285.4 *
								Yakhtashian	286
								Yakhtashian	288.5
		Sakmarian						Sakmarian	290.1
		Asselian					Bursumian †	Asselian	Zisongian	293.52
Carboniferous	Pennsylvanian	Gzhelian					Virgilian		Zisongian	298.9
		Gzhelian					Virgilian			300.1
		Kasimovian					Missourian			303.7
		Kasimovian					Desmoinesian			305.9 *
		Moscovian					Desmoinesian			307
		Moscovian					Atokan			312.7 *
		Bashkirian					Atokan			315.2
		Bashkirian					Morrowan			318.4 *
	Mississippian	Serpukhovian					Chesterian			323.2
		Visean					Chesterian			330.9
							Meramecian			335.8 *
							Osagean			343.1 *
		Tournaisian					Osagean			346.7
		Tournaisian				Kinderhookian	351.9 *
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									Ohesaare		419.2
	Pridoli									Kaugetuma		421.7 *
	Ludlow	Ludfordian								Kuressaare		423
		Ludfordian								Paadla		423.4 *
		Gorstian								Paadla		425.6
	Wenlock	Homerian								Rootsikula		427.4
		Homerian								Jaagarahu		429.2 *
		Sheinwoodian								Jaagarahu		430.5
		Sheinwoodian								Jaani		431.8 *
	Llandovery	Telychian								Jaani		433.4
		Telychian								Adavere		434 *
		Aeronian								Adavere		438.5
		Aeronian								Raikkula		439.4 *
		Rhuddanian								Raikkula		440.8
		Rhuddanian								Juuru		441.4 *
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										485.4
		Jiangshanian										489.5
		Paibian										494
	Miaolingian	Guzhangian										Series 3 †	497
		Guzhangian											Arcadian	498.4
		Drumian												500.5
		Wuliuan		Stage 5 †										504.5
	Series 2	Stage 4											Branchian	509
		Stage 3											Branchian	514
		Stage 3											Placentian	517.1
	Terreneuvian	Stage 2												521
	Terreneuvian	Fortunian												529
																	538.8