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
M. Kretzoi. 1942. Necroteuthis n. g. (Ceph. Dibr., Necroteuthidae N. F.) aus dem Oligozän von Budapest und das system der Dibranchiata. Földtani Közlöny 72:125-238 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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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 North America						Permian-Jurassic of New Zealand		Cambrian of China		Cambrian of Kazakhstan	Devonian of Czechoslovakia	Paleogene Mammal Ages of Asia		Ordovician of Ibero-Bohemia
Neogene	Pliocene	Piacenzian	Tertiary †																			2.58
	Pliocene	Zanclean																				3.6
	Miocene	Messinian																				5.333
		Tortonian																				7.246
		Serravallian																				11.63
		Langhian																				13.82
		Burdigalian																				15.98
		Aquitanian																				20.44
Paleogene	Oligocene	Chattian																Tabenbulakian	Hsandagolian			23.03
	Oligocene	Rupelian																Kekeamuan	Hsandagolian			27.82
	Eocene	Priabonian																Houldjinian/Ergilian/Ulangochuian				33.9
		Bartonian																Sharamurunian/Irdinmanhan/Arshantan				37.71
		Lutetian																				41.2
		Ypresian																	Bumbanian			47.8
	Paleocene	Thanetian																Gashatan				56
		Selandian																				59.2
		Danian																				61.6
Cretaceous	Late Cretaceous	Maastrichtian																				66
		Campanian																				72.1
		Santonian																				83.6
		Coniacian																				86.3
		Turonian																				89.8
		Cenomanian																				93.9
	Early Cretaceous	Albian																				100.5
		Aptian																				113
		Barremian																				121.4
		Hauterivian																				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									251.902
		Changhsingian											Waiitian									253.2
		Wuchiapingian		Longtanian †									Waiitian									254.14
		Wuchiapingian		Longtanian †									Puruhauan									254.2
	Guadalupian	Capitanian										Aparima	Flettian									259.51
		Wordian			264.28								Flettian
		Wordian			Barettian	266
		Roadian				266.9
	Cisuralian	Kungurian				273.01
		Kungurian			Mangapirian	276
		Artinskian			Mangapirian	283.5
					Telfordian	285
							288.5
		Sakmarian					290.1
		Asselian					293.52
Carboniferous	Pennsylvanian	Gzhelian					Mapingian †	298.9
		Kasimovian					Mapingian †	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	Srbsko					382.7
	Middle Devonian	Eifelian	Chotec					387.7
	Early Devonian	Emsian	Daleje/Zlichovian					393.3
		Pragian	Pragian					407.6
		Lochkovian	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						Cincinnatian	Gamachian	Kosovian	443.8
		Katian							Gamachian	Kralodvorian	Bohdalec †	445.2
									Richmondian	Kralodvorian		446 *
									Richmondian	Berounian		449.7 *
									Maysvillian			Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
									Edenian				450.4 *
								Mohawkian	Chatfieldian				451.1 *
		Sandbian							Chatfieldian				453
									Turinian				453.7 *
									Turinian				Zahorany †/Vinice	Letna †	456.2 *
								Whiterockian				Canadian †	Zahorany †/Vinice		Chazyan †/Marmor	457 *
											Liben †					458 *
	Middle Ordovician	Darriwilian														458.4
										Dobrotivian						458.5 *
										Oretanian						459.7 *
											Sarka †					461.7 *
		Dapingian									Klabava †					467.3
										Arenigian						468
									Rangerian							469.1 *
	Early Ordovician	Floian						Ibexian	Blackhillsian						Jeffersonian †	Cassinian †	470
		Floian							Tulean								473.9 *
		Tremadocian							Tulean	Ungurian	Tremadocian							477.7
									Stairsian									480.3 *
									Skullrockian							Demingian †		482 *
Cambrian	Furongian	Stage 10							Skullrockian						Niuchehean	Taoyuanian †		Batyrbaian	Late Cambrian	485.4
		Stage 10													Niuchehean					487.5
		Jiangshanian													Jiangshanian					489.5
																		Aksaian		490.7 *
																		Sakian		492.2 *
		Paibian													Paibian					494
		Paibian		Waergangian †/Youshuanian											Paibian	494.9 *
	Miaolingian	Guzhangian		Series 3 †											Guzhangian	Wangcunian †		Ayusokkanian	Middle Cambrian	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														Duyunian			Early Cambrian		509
					Toyonian	510 *
					Botomian	512.5 *
		Stage 3			Botomian	Nangaoian										514
		Stage 3			Atdabanian	Nangaoian										515.6 *
	Terreneuvian	Stage 2			Meishucunian	Tommotian										521
		Stage 2					525.5
		Fortunian					529
		Fortunian			Jinnigian		530.7
																						538.8