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
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
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

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			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			145
		Kimmeridgian			149.2
		Oxfordian			154.8
	Middle Jurassic	Callovian			161.5
		Bathonian			165.3
		Bajocian			168.2
		Aalenian			170.9
	Early Jurassic	Toarcian			174.7
		Pliensbachian			184.2
		Sinemurian			192.9
		Hettangian			199.5
Triassic	Late Triassic	Rhaetian			201.4
		Norian			208.5
		Carnian			227
	Middle Triassic	Ladinian			237
	Middle Triassic	Anisian			242
	Early Triassic	Olenekian			247.2
	Early Triassic	Induan			251.2
Permian	Lopingian	Changhsingian			Meishanian	251.902
		Changhsingian			Baoqingian	253.4 *
		Wuchiapingian			Longtanian †	Laoshanian	254.14
		Wuchiapingian			Longtanian †	Laibinian	257.7 *
	Guadalupian	Capitanian				Lengwuan	259.51
		Wordian				Kuhfengian	264.28
		Roadian				Kuhfengian	266.9
	Cisuralian	Kungurian				Luodianian	273.01
		Artinskian				Luodianian	283.5
		Artinskian				Longlinian	285.4 *
		Sakmarian				Longlinian	290.1
		Asselian				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						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	427.4
	Wenlock	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