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
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. 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			Cambrian of Siberia			Carboniferous of North America	Permian of the Pamirs	Permian of China	Cretaceous-Cenozoic of New Zealand
Quaternary	Holocene	Meghalayan										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											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											Waitakian	23.03
													Duntroonian	25.2
													Whaingaroan	27.3
		Rupelian												27.82
	Eocene	Priabonian												33.9
												Arnold	Runangan	34.6
													Kaiatan	36.7
		Bartonian											Kaiatan	37.71
		Bartonian											Bortonian	39.1
		Lutetian											Bortonian	41.2
												Dannevirke	Porangan	42.6
													Heretaungan	45.7
		Ypresian											Heretaungan	47.8
													Mangaorapan	48.9
													Waipawan	52
	Paleocene	Thanetian											Teurian	56
		Selandian												59.2
		Danian												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			Dorashamian	Meishanian	251.902
		Changhsingian			Dorashamian	Baoqingian	253.4 *
		Wuchiapingian			Longtanian †	Dzhulfian	Laoshanian	254.14
		Wuchiapingian			Longtanian †	Dzhulfian	Laibinian	257.7 *
	Guadalupian	Capitanian				Midian	Lengwuan	259.51
		Wordian				Midian	Kuhfengian	264.28
		Wordian				Murgabian		266.2 *
		Roadian				Murgabian		266.9
	Cisuralian	Kungurian				Kubergandian	Luodianian	273.01
		Kungurian				Bolorian		279.8
		Artinskian						283.5
							Longlinian	285.4 *
						Yakhtashian		286
		Sakmarian				Sakmarian		290.1
		Asselian				Bursumian †	Asselian	Zisongian	293.52
Carboniferous	Pennsylvanian	Gzhelian				Virgilian		Zisongian	298.9
		Gzhelian				Virgilian			300.1
		Kasimovian				Missourian			303.7
		Kasimovian				Desmoinesian			305.9 *
		Moscovian				Desmoinesian			307
		Moscovian				Atokan			312.7 *
		Bashkirian				Atokan			315.2
		Bashkirian				Morrowan			318.4 *
	Mississippian	Serpukhovian				Chesterian			323.2
		Visean				Chesterian			330.9
						Meramecian			335.8 *
			Osagean			343.1 *
		Tournaisian	Osagean			346.7
		Tournaisian	Kinderhookian			351.9 *
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				443.8
		Katian				445.2
		Sandbian		453
	Middle Ordovician	Darriwilian		458.4
	Middle Ordovician	Dapingian		467.3
	Early Ordovician	Floian		470
		Tremadocian		477.7
		Tremadocian		Mansian †		483.55 *
Cambrian	Furongian	Stage 10		Batyrbaian		Tavgian †			Ketyan †/Yurakian	485.4
		Jiangshanian		Batyrbaian						489.5
				Aksaian						490.7 *
				Sakian						492.2 *
		Paibian								494
		Paibian							Ensyan †/Maduan/Nganasanian	494.7 *
	Miaolingian	Guzhangian		Series 3 †		Ayusokkanian					497
		Guzhangian				Mayan/Menevian					499.5
		Drumian				Mayan/Menevian					500.5
		Wuliuan			Stage 5 †	Amgan/Solvan					504.5
	Series 2	Stage 4				Amgan/Solvan					509
						Toyonian			Lenian †		510 *
						Botomian					512.5 *
		Stage 3				Botomian					514
		Stage 3				Atdabanian					515.6 *
	Terreneuvian	Stage 2				Tommotian					521
		Stage 2				Nemakit-Daldynian					525.5
		Fortunian				Nemakit-Daldynian			Manykaian †		529
														538.8