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			Ten Million Year Bins	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				Cenozoic 6													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				Cenozoic 5														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				Cenozoic 4														Waitakian	23.03
																				Duntroonian	25.2
																				Whaingaroan	27.3
		Rupelian																			27.82
	Eocene	Priabonian				Cenozoic 3															33.9
																			Arnold	Runangan	34.6
																				Kaiatan	36.7
		Bartonian																		Kaiatan	37.71
		Bartonian																		Bortonian	39.1
		Lutetian				Cenozoic 2														Bortonian	41.2
																			Dannevirke	Porangan	42.6
																				Heretaungan	45.7
		Ypresian																		Heretaungan	47.8
																				Mangaorapan	48.9
																				Waipawan	52
	Paleocene	Thanetian				Cenozoic 1														Teurian	56
		Selandian																			59.2
		Danian																			61.6
Cretaceous	Late Cretaceous	Maastrichtian				Cretaceous 8													Mata	Haumurian	66
		Campanian				Cretaceous 7														Haumurian	72.1
		Santonian				Cretaceous 6														Piripauan	83.6
		Santonian																	Raukumara	Teratan	86.1
		Coniacian																			86.3
		Turonian																			89.8
																				Mangaotanean	90.5
																				Arowhanan	93.7
		Cenomanian				Cretaceous 5														Arowhanan	93.9
																			Clarence	Ngaterian	95.2
																				Motuan	99.5
	Early Cretaceous	Albian				Cretaceous 4														Motuan	100.5
																				Urutawan	103.3
																			Taitai	Korangan	108.4
		Aptian				Cretaceous 3														Korangan	113
		Aptian				Cretaceous 3															117.5
		Barremian				Cretaceous 2															121.4
		Hauterivian				Cretaceous 2															125.77
		Valanginian				Cretaceous 1															132.6
		Berriasian		139.8		Cretaceous 1
Jurassic	Late Jurassic	Tithonian		Jurassic 6	Oteke	Puaroan		145
		Kimmeridgian		Jurassic 5	Oteke	Puaroan		149.2
					Kawhia	Ohauan		150
						Heterian		154.5
		Oxfordian						154.8
	Middle Jurassic	Callovian						161.5
		Callovian				Temaikan		164.3
		Bathonian		Jurassic 4				165.3
		Bajocian		Jurassic 4				168.2
		Aalenian		Jurassic 3				170.9
	Early Jurassic	Toarcian						174.7
		Toarcian			Herangi	Ururoan		176
		Pliensbachian		Jurassic 2		Ururoan		184.2
		Pliensbachian		Jurassic 2		Aratauran		188.9
		Sinemurian		Jurassic 1				192.9
		Hettangian		Jurassic 1				199.5
Triassic	Late Triassic	Rhaetian		Triassic 4	Balfour	Otapirian		201.4
		Norian				Warepan		208.5
						Otamitan		217
						Oretian		221
		Carnian		Triassic 3		Oretian		227
		Carnian		Triassic 3	Gore	Kaihikuan		227.5
	Middle Triassic	Ladinian		Triassic 2		Kaihikuan		237
		Ladinian				Etalian		238
		Anisian				Etalian		242
		Anisian				Malakovian		246
	Early Triassic	Olenekian		Triassic 1		Malakovian		247.2
		Olenekian				Nelsonian		249
		Induan				Nelsonian		251.2
		Induan			DUrville	Makarewan		251.5
Permian	Lopingian	Changhsingian		Permian 4		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		Permian 3					Murgabian		266.9
	Cisuralian	Kungurian		Permian 2					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		Permian 1				Bursumian †	Asselian	Zisongian	293.52
Carboniferous	Pennsylvanian	Gzhelian		Carboniferous 5				Virgilian		Zisongian	298.9
		Gzhelian						Virgilian			300.1
		Kasimovian						Missourian			303.7
		Kasimovian						Desmoinesian			305.9 *
		Moscovian		Carboniferous 4				Desmoinesian			307
		Moscovian						Atokan			312.7 *
		Bashkirian						Atokan			315.2
		Bashkirian						Morrowan			318.4 *
	Mississippian	Serpukhovian		Carboniferous 3				Chesterian			323.2
		Visean		Carboniferous 2				Chesterian			330.9
								Meramecian			335.8 *
								Osagean			343.1 *
		Tournaisian		Carboniferous 1				Osagean			346.7
		Tournaisian		Carboniferous 1			Kinderhookian	351.9 *
Devonian	Late Devonian	Famennian		Devonian 5			Conewangan/Conneautan/Canadaway				358.9
	Late Devonian	Frasnian		Devonian 4			West Fallsian/Sonyean				372.2
	Middle Devonian	Givetian		Devonian 3			Geneseean/Taghanican/Tioughniogan				Cazenovian	382.7
	Middle Devonian	Eifelian		Devonian 3			Southwoodian				Cazenovian	387.7
	Early Devonian	Emsian		Devonian 2			Sawkillian/Deer Parkian				Helderbergian	393.3
		Pragian		Devonian 1								407.6
		Lochkovian		Devonian 1								410.8
Silurian	Pridoli			Silurian 2								419.2
	Ludlow	Ludfordian										423
	Ludlow	Gorstian										425.6
	Wenlock	Homerian										427.4
	Wenlock	Sheinwoodian										430.5
	Llandovery	Telychian		Silurian 1								433.4
		Aeronian										438.5
		Rhuddanian										440.8
Ordovician	Late Ordovician	Hirnantian		Ordovician 5								Kosovian	443.8
		Katian										Kralodvorian	Bohdalec †	445.2
		Katian										Berounian		449.7 *
		Sandbian		Ordovician 4										453
														Zahorany †/Vinice	Letna †	456.2 *
													Liben †			458 *
	Middle Ordovician	Darriwilian		Ordovician 3												458.4
												Dobrotivian				458.5 *
												Oretanian				459.7 *
													Sarka †			461.7 *
		Dapingian		Ordovician 2									Klabava †			467.3
		Dapingian										Arenigian				468
	Early Ordovician	Floian										Arenigian				470
	Early Ordovician	Tremadocian		Ordovician 1								Tremadocian				477.7
Cambrian	Furongian	Stage 10		Cambrian 5												485.4
		Jiangshanian														489.5
		Paibian														494
	Miaolingian	Guzhangian		Series 3 †												Cambrian 4	497
		Guzhangian															Arcadian	498.4
		Drumian																500.5
		Wuliuan			Stage 5 †											Cambrian 3		504.5
	Series 2	Stage 4														Cambrian 3	Branchian	509
		Stage 3														Cambrian 2	Branchian	514
		Stage 3															Placentian	517.1
	Terreneuvian	Stage 2																521
	Terreneuvian	Fortunian														Cambrian 1		529
																					538.8