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. 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 the Baltic				Obsolete Carboniferous Ages of China	Paleogene Mammal Ages of Asia		Permian of the Pamirs	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											Dorashamian		Makarewan	251.902
		Changhsingian											Dorashamian		Waiitian	253.2
		Wuchiapingian		Longtanian †									Dzhulfian		Waiitian	254.14
		Wuchiapingian		Longtanian †									Dzhulfian		Puruhauan	254.2
	Guadalupian	Capitanian											Midian	Aparima	Flettian	259.51
		Wordian			264.28										Flettian
					Barettian	266
						Murgabian	266.2 *
		Roadian				Murgabian	266.9
	Cisuralian	Kungurian				Kubergandian	273.01
					Mangapirian	Kubergandian	276
						Bolorian	279.8
		Artinskian					283.5
					Telfordian		285
					Telfordian	Yakhtashian	286
						Yakhtashian		288.5
		Sakmarian				Sakmarian		290.1
		Asselian				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	Late Famennian						358.9
			Middle Famennian						365.3 *
			Early Famennian						368.5 *
		Frasnian	Late Frasnian						372.2
			Middle Frasnian						375.4 *
			Early Frasnian						379.3 *
	Middle Devonian	Givetian	Late Givetian						382.7
			Middle Givetian						383.7 *
			Early Givetian						385.9 *
		Eifelian	Late Eifelian						387.7
		Eifelian	Early Eifelian						390.3 *
	Early Devonian	Emsian	Late Emsian						393.3
		Emsian	Early Emsian						398.3 *
		Pragian	Pragian						407.6
		Lochkovian	Late Lochkovian						410.8
			Middle Lochkovian						412.8 *
			Early Lochkovian						415.6 *
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	443.8
		Katian								Pirgu	445.2
										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		458.4
										Lasnamagi		458.9 *
										Aseri		460.4 *
									Oeland	Kunda		462.9 *
										Kunda	Valaste †/Hunderum	464.3 *
										Volkhov		Langevoja †/Vaana/Saka	467.1 *
		Dapingian								Volkhov			467.3
		Dapingian		Billingen						469.3 *
	Early Ordovician	Floian								470
										Latorp †		470.1 *
				Hunneberg								473.7 *
		Tremadocian		Hunneberg								477.7
				Varangu								481.3 *
				Pakerort								482.2 *
Cambrian	Furongian	Stage 10		Pakerort								Franconian †/Dresbachian/Millardan	485.4
													486.3 *
													486.5
													Sunwaptan	487.5
		Jiangshanian			489.5								Sunwaptan
		Jiangshanian			Steptoean		493 *
		Paibian			Steptoean		494
	Miaolingian	Guzhangian			Series 3 †		Marjumian	Albertian †				497
		Drumian					Marjumian					500.5
		Wuliuan				Stage 5 †	Topazan					504.5
		Wuliuan				Stage 5 †	Delamaran					506.5
	Series 2	Stage 4					Delamaran	Waucoban †				509
		Stage 4					Dyeran					511 *
		Stage 3					Dyeran					514
							Montezuman					514.8 *
							Begadean					519.9 *
	Terreneuvian	Stage 2										521
	Terreneuvian	Fortunian										529
																538.8