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. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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 North America						Permian of China	Devonian of Czechoslovakia	Cambrian of Australia	Paleogene Mammal Ages of Asia		Permian-Jurassic of New Zealand
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										Meishanian						Makarewan	251.902
												Meishanian						Waiitian	253.2
												Baoqingian							253.4 *
		Wuchiapingian		Longtanian †								Laoshanian							254.14
												Laoshanian						Puruhauan	254.2
					Laibinian	257.7 *												Puruhauan
	Guadalupian	Capitanian			Lengwuan	Aparima	Flettian	259.51
		Wordian			Kuhfengian		Flettian	264.28
		Wordian					Barettian	266
		Roadian						266.9
	Cisuralian	Kungurian			Luodianian			273.01
		Kungurian					Mangapirian	276
		Artinskian					Mangapirian	283.5
							Telfordian	285
					Longlinian		Telfordian	285.4 *
								288.5
		Sakmarian						290.1
		Asselian			Zisongian			293.52
Carboniferous	Pennsylvanian	Gzhelian			Zisongian			298.9
		Gzhelian						300.1
		Kasimovian						303.7
		Moscovian						307
		Bashkirian	315.2
	Mississippian	Serpukhovian	323.2
		Visean	330.9
		Tournaisian	346.7
Devonian	Late Devonian	Famennian	Famennian					358.9
	Late Devonian	Frasnian	Frasnian					372.2
	Middle Devonian	Givetian	Srbsko					Givetian	382.7
	Middle Devonian	Eifelian	Chotec					Couvinien	387.7
	Early Devonian	Emsian	Daleje/Zlichovian						393.3
		Pragian	Pragian						407.6
		Pragian	Pragian					Coblencien	408.2 *
		Lochkovian	Lochkovian					Gedinnine	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	443.8
		Katian								Gamachian	445.2
										Richmondian	446 *
										Maysvillian	Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
										Edenian		450.4 *
									Mohawkian	Chatfieldian		451.1 *
		Sandbian								Chatfieldian		453
										Turinian		453.7 *
									Whiterockian		Canadian †	Chazyan †/Marmor	457 *
	Middle Ordovician	Darriwilian											458.4
		Dapingian											467.3
		Dapingian								Rangerian			469.1 *
	Early Ordovician	Floian							Ibexian	Blackhillsian		Jeffersonian †	Cassinian †	470
		Floian								Tulean				473.9 *
		Tremadocian								Tulean				477.7
										Stairsian				480.3 *
										Skullrockian			Demingian †	482 *
Cambrian	Furongian	Stage 10												Datsonian	485.4
														Payntonian	486.8 *
														Payntonian	487.5
		Jiangshanian												Iverian	489.5
		Paibian												Idamean	494
	Miaolingian	Guzhangian												Series 3 †	Mindyallan	497
		Guzhangian													Boomerangian	499
		Drumian													Undillan	500.5
		Drumian													Floran	503
		Wuliuan		Stage 5 †											Templetonian	504.5
		Wuliuan		Stage 5 †											Ordian	507.8 *
	Series 2	Stage 4													Ordian	509
																			510.8 *