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

Show more time

Show linear time

International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Ordovician of Ibero-Bohemia				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										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									Kosovian	443.8
		Katian									Kralodvorian	Bohdalec †	445.2
		Katian									Berounian		449.7 *
		Sandbian											453
													Zahorany †/Vinice	Letna †	456.2 *
												Liben †			458 *
	Middle Ordovician	Darriwilian													458.4
											Dobrotivian				458.5 *
											Oretanian				459.7 *
												Sarka †			461.7 *
		Dapingian										Klabava †			467.3
		Dapingian									Arenigian				468
	Early Ordovician	Floian									Arenigian				470
	Early Ordovician	Tremadocian									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