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			Permian of Western Europe	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 †	Zechstein	Laoshanian	254.14
		Wuchiapingian			Longtanian †	Zechstein	Laibinian	257.7 *
	Guadalupian	Capitanian				Rotliegendes	Lengwuan	259.51
		Wordian					Kuhfengian	264.28
		Roadian					Kuhfengian	266.9
	Cisuralian	Kungurian					Luodianian	273.01
		Artinskian				Autunian	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