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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
F. F. Steininger, W. A. Berggren, D. V. Kent, R. L. Bernor, S. Sen and J. Agusti. 1996. Circum-Mediterranean Neogene (Miocene and Pliocene) marine-continental chronologic correlations of European mammal units. The Evolution of Western Eurasian Neogene Mammal Faunas (eds. R. L. Bernor, V. Fahlbusch, and H.-W. Mittmann) 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
Z.-X. Qiu and Z.-D. Qiu. 1995. Chronological sequence and subdivision of Chinese Neogene mammalian faunas. Palaeogeography, Palaeoclimatology, Palaeoecology 116(1-2):41-70 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 Epochs	European Faunal Zones	Cambrian of China		Silurian of North America			Cambrian of Kazakhstan	Ordovician of China		Neogene Mammal Ages of China	Cretaceous-Cenozoic of New Zealand
Quaternary	Holocene	Meghalayan															Wanganui	Haweran	0
		Northgrippian																	0.0042
		Greenlandian																	0.0082
	Pleistocene	Late Pleistocene														Nihewanian			0.0117
		Chibanian																	0.129
		Chibanian																Castlecliffian	0.34
		Calabrian																Castlecliffian	0.774
		Calabrian																Nukumaruan	1.63
		Gelasian					MN 17											Nukumaruan	1.8
		Gelasian					MN 17											Mangapanian	2.4
Neogene	Pliocene	Piacenzian	Tertiary †				MN 16									Yushean		Mangapanian	2.58
							MN 16											Waipipian	3
							MN 15												3.2
		Zanclean																	3.6
																		Opoitian	3.7
							MN 14												4.2
							MN 13									Baodean			4.9
	Miocene	Messinian															Taranaki	Kapitean	5.333
		Messinian																Tongaporutuan	7.2
		Tortonian					MN 12												7.246
							MN 11												7.75
							MN 10												8.7
							MN 9												9.7
							MN 9										Southland	Waiauan	11.04
							MN 7 + 8									Tunggurian			11.1
		Serravallian					MN 7 + 8												11.63
							MN 6												12.8 *
							MN 6											Lillburnian	13.05
		Langhian					MN 5									Shanwangian		Lillburnian	13.82
																		Clifdenian	15.1
																	Pareora	Altonian	15.9
		Burdigalian					MN 4												15.98
							MN 3									Xiejiaan			16.9
							MN 3											Otaian	18.7
							MN 2												20
		Aquitanian																	20.44
																	Landon	Waitakian	21.7
							MN 1												22.4
Paleogene	Oligocene	Chattian																	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		93.9														Arowhanan
				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				251.902
	Lopingian	Wuchiapingian				Longtanian †		254.14
	Guadalupian	Capitanian						Capitanian	259.51
		Wordian						Wordian	264.28
		Roadian						Roadian	266.9
	Cisuralian	Kungurian						Leonardian	Cathedralian	273.01
		Kungurian							Hessian	281.9 *
		Artinskian							Hessian	283.5
		Artinskian					Wolfcampian	Lenoxian	286.1 *
		Sakmarian						Lenoxian	290.1
		Asselian						Nealian	293.52
Carboniferous	Pennsylvanian	Gzhelian							298.9
		Kasimovian							303.7
		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								Cayugan	419.2
	Pridoli		Niagaran						422.5 *
	Ludlow	Ludfordian							423
	Ludlow	Gorstian							425.6
	Wenlock	Homerian							Lockportian	427.4
	Wenlock	Sheinwoodian								430.5
	Llandovery	Telychian							Ontarian	433.4
		Aeronian								438.5
										Alexandrian	438.7 *
			Medinan						Clinton		440.1 *
											440.7 *
		Rhuddanian									440.8
Ordovician	Late Ordovician	Hirnantian									Hirnantian	Xiaoxita †/Shikou	Wufeng †	443.8
		Katian									Chientangkiangian		Wufeng †	445.2
		Katian									Neichianshanian/Hanjiang			449.5
		Sandbian									Neichianshanian/Hanjiang			453
	Middle Ordovician	Darriwilian			Darriwilian						Guniu †/Hulo	458.4
		Darriwilian			Darriwilian						Hunjiang †	Dawan †/Daobaowan/Ningkuo	466.3 *
		Dapingian			Dapingian								467.3
	Early Ordovician	Floian			Yiyangian								470
		Tremadocian			Ungurian								Xinchangian	477.7
		Tremadocian		Lianghekou †	Ungurian							477.9 *	Xinchangian
Cambrian	Furongian	Stage 10		Late Cambrian	Niuchehean						Taoyuanian †	Batyrbaian			485.4
		Jiangshanian			Jiangshanian							Batyrbaian			489.5
												Aksaian			490.7 *
												Sakian			492.2 *
		Paibian			Paibian										494
		Paibian			Paibian						Waergangian †/Youshuanian				494.9 *
	Miaolingian	Guzhangian		Series 3 †	Middle Cambrian						Guzhangian	Wangcunian †			Ayusokkanian	497
		Guzhangian									Guzhangian					499.5
		Drumian									Drumian				Zhanaarykian	500.5
		Drumian									Drumian				Tuesaian	503
		Wuliuan				Stage 5 †					Wuliuan/Taijangian				Tuesaian	504.5
		Wuliuan				Stage 5 †					Wuliuan/Taijangian					505.3
	Series 2	Stage 4				Early Cambrian					Duyunian					509
															Toyonian	510 *
															Botomian	512.5 *
		Stage 3									Nangaoian				Botomian	514
		Stage 3									Nangaoian				Atdabanian	515.6 *
	Terreneuvian	Stage 2									Meishucunian				Tommotian	521
		Stage 2														525.5
		Fortunian														529
		Fortunian									Jinnigian					530.7
																			538.8