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			Cretaceous Subepochs	Carboniferous of Western Europe		Silurian Ages of Europe	Permian-Jurassic of New Zealand		Ordovician of the Baltic				Permian of China	Cenozoic Subepochs	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				Senonian												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				Gallic													Motuan	100.5
																			Urutawan	103.3
																		Taitai	Korangan	108.4
		Aptian																	Korangan	113
		Aptian																		117.5
		Barremian																		121.4
		Hauterivian				Neocomian														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				Aparima		Flettian	Lengwuan	259.51
		Wordian						Flettian	Kuhfengian	264.28
		Wordian						Barettian		266
		Roadian								266.9
	Cisuralian	Kungurian							Luodianian	273.01
		Kungurian						Mangapirian		276
		Artinskian						Mangapirian		283.5
								Telfordian		285
			Longlinian					Telfordian	285.4 *
									288.5
		Sakmarian							290.1
		Asselian	Zisongian						293.52
		Asselian							Kuzel	297.7
Carboniferous	Pennsylvanian	Gzhelian								Mapingian †	298.9
											300.1
									Stephanian		Stephanian C	300.3 *
											Stephanian B	300.9 *
											Stephanian A	301.4 *
		Kasimovian									Stephanian A	303.7
											Cantabrian	305 *
												305.9
		Moscovian										307
									Westphalian		Westphalian D	307.4 *
											Westphalian C	309.8
											Westphalian B	314.6
		Bashkirian									Westphalian B	315.2
											Westphalian A	317 *
									Namurian		Yeadonian	318.8 *
				Marsdenian			320.2 *
				Kinderscoutian			321.5 *
				Alportian			322 *
				Chokierian			323.1 *
	Mississippian	Serpukhovian		Chokierian			323.2
				Arnsbergian			324 *
				Pendleian			327.4 *
		Visean		Warnantian			Brigantian †		330.9
				Livian			Asbian †		336.3 *
				Moliniacian			Holkerian †/Arundian/Chadian		340.2 *
		Tournaisian		Ivorian					346.7
		Tournaisian		Hastarian					353.7 *
Devonian	Late Devonian	Famennian							358.9
	Late Devonian	Frasnian							372.2
	Middle Devonian	Givetian							382.7
	Middle Devonian	Eifelian							387.7
	Early Devonian	Emsian							393.3
		Pragian							407.6
		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