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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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			Devonian of Czechoslovakia	Permian of North America		Silurian Ages of Europe	Permian-Jurassic of New Zealand		Ordovician of the Baltic				Permian of China	Cenozoic Subepochs	Ordovician of China			Cretaceous-Cenozoic of New Zealand
Quaternary	Holocene	Meghalayan																			Wanganui	Haweran	0
		Northgrippian																					0.0042
		Greenlandian																					0.0082
	Pleistocene	Late Pleistocene															Late Pleistocene						0.0117
		Chibanian															Middle Pleistocene						0.129
		Chibanian															Middle Pleistocene					Castlecliffian	0.34
		Calabrian															Early Pleistocene					Castlecliffian	0.774
		Calabrian																				Nukumaruan	1.63
		Gelasian																				Nukumaruan	1.8
		Gelasian																				Mangapanian	2.4
Neogene	Pliocene	Piacenzian	Tertiary †														Late Pliocene					Mangapanian	2.58
		Piacenzian															Late Pliocene					Waipipian	3
		Zanclean															Early Pliocene					Waipipian	3.6
		Zanclean															Early Pliocene					Opoitian	3.7
	Miocene	Messinian															Late Miocene				Taranaki	Kapitean	5.333
		Messinian																				Tongaporutuan	7.2
		Tortonian																				Tongaporutuan	7.246
		Tortonian																			Southland	Waiauan	11.04
		Serravallian															Middle Miocene					Waiauan	11.63
		Serravallian																				Lillburnian	13.05
		Langhian																				Lillburnian	13.82
																						Clifdenian	15.1
																					Pareora	Altonian	15.9
		Burdigalian															Early Miocene					Altonian	15.98
		Burdigalian																				Otaian	18.7
		Aquitanian																				Otaian	20.44
		Aquitanian																			Landon	Waitakian	21.7
Paleogene	Oligocene	Chattian															Late Oligocene					Waitakian	23.03
																						Duntroonian	25.2
																						Whaingaroan	27.3
		Rupelian															Early Oligocene						27.82
	Eocene	Priabonian															Late Eocene						33.9
																					Arnold	Runangan	34.6
																						Kaiatan	36.7
		Bartonian															Middle Eocene					Kaiatan	37.71
		Bartonian																				Bortonian	39.1
		Lutetian																				Bortonian	41.2
																					Dannevirke	Porangan	42.6
																						Heretaungan	45.7
		Ypresian															Early Eocene					Heretaungan	47.8
																						Mangaorapan	48.9
																						Waipawan	52
	Paleocene	Thanetian															Late Paleocene					Teurian	56
		Selandian															Middle Paleocene						59.2
		Danian															Early Paleocene						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		Meishanian	251.902
					Waiitian		Meishanian	253.2
							Baoqingian	253.4 *
		Wuchiapingian					Longtanian †	Laoshanian	254.14
					Puruhauan			Laoshanian	254.2
					Puruhauan			Laibinian	257.7 *
	Guadalupian	Capitanian			Capitanian		Aparima	Flettian	Lengwuan	259.51
		Wordian			Wordian			Flettian	Kuhfengian	264.28
		Wordian			Wordian			Barettian		266
		Roadian			Roadian					266.9
	Cisuralian	Kungurian			Leonardian				Cathedralian	Luodianian	273.01
								Mangapirian	Cathedralian		276
									Hessian		281.9 *
		Artinskian									283.5
			Telfordian					285
								Longlinian		285.4 *
					Wolfcampian				Lenoxian	286.1 *
										288.5
		Sakmarian								290.1
		Asselian						Nealian	Zisongian	293.52
Carboniferous	Pennsylvanian	Gzhelian							Zisongian	Mapingian †	298.9
		Gzhelian									300.1
		Kasimovian									303.7
		Kasimovian									305.9
		Moscovian									307
		Bashkirian									315.2
	Mississippian	Serpukhovian									323.2
		Visean									330.9
		Tournaisian									346.7
Devonian	Late Devonian	Famennian									358.9
	Late Devonian	Frasnian									372.2
	Middle Devonian	Givetian									Srbsko	382.7
	Middle Devonian	Eifelian									Chotec	387.7
	Early Devonian	Emsian									Daleje/Zlichovian	393.3
		Pragian				Pragian					407.6
		Lochkovian				Lochkovian					410.8
Silurian	Pridoli										419.2
	Ludlow	Ludfordian									423
	Ludlow	Gorstian									425.6
	Wenlock	Homerian									Gleedonian	427.4
		Homerian									Whitwellian	429.7 *
		Sheinwoodian										430.5
	Llandovery	Telychian										433.4
		Aeronian										438.5
		Rhuddanian										440.8
Ordovician	Late Ordovician	Hirnantian										Harju	Porkuni	Hirnantian	Xiaoxita †/Shikou	Wufeng †	443.8
		Katian											Pirgu	Chientangkiangian		Wufeng †	445.2
													Pirgu	Neichianshanian/Hanjiang			449.5
													Vormsi				449.6 *
													Nabala				Johvi †	450 *
												Viru	Rakvere					450.6 *
													Oandu					452 *
		Sandbian											Keila				Idavere †	453
													Haljala					453.9
													Kukruse					456.4 *
													Uhaku				Aluoja †	457.5 *
	Middle Ordovician	Darriwilian											Uhaku	Darriwilian	Guniu †/Hulo			458.4
													Lasnamagi					458.9 *
													Aseri					460.4 *
												Oeland	Kunda					462.9 *
																	Valaste †/Hunderum	464.3 *
															Hunjiang †	Dawan †/Daobaowan/Ningkuo		466.3 *
													Volkhov					Langevoja †/Vaana/Saka	467.1 *
		Dapingian											Volkhov	Dapingian					467.3
		Dapingian											Billingen	Dapingian					469.3 *
	Early Ordovician	Floian												Yiyangian					470
																	Latorp †		470.1 *
													Hunneberg						473.7 *
		Tremadocian												Xinchangian					477.7
																Lianghekou †			477.9 *
				Varangu									481.3 *
				Pakerort									482.2 *
Cambrian	Furongian	Stage 10		Pakerort													485.4
																	486.3 *
																	486.5
		Jiangshanian															489.5
		Paibian															494
	Miaolingian	Guzhangian															Series 3 †		497
		Drumian																	500.5
		Wuliuan																	Stage 5 †	504.5
																							509