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
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			Carboniferous of Western Europe		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
		Asselian				Asselian		Kuzel			297.7
Carboniferous	Pennsylvanian	Gzhelian				Mapingian †		Kuzel			298.9
								Stephanian	Stephanian C		300.3 *
									Stephanian B		300.9 *
			Stephanian A						301.4 *
		Kasimovian	Stephanian A						303.7
			Cantabrian						305 *
									305.9
		Moscovian							307
			Westphalian					Westphalian D	307.4 *
								Westphalian C	309.8
								Westphalian B	314.6
		Bashkirian						Westphalian B	315.2
								Westphalian A	317 *
			Namurian					Yeadonian	318.8 *
								Marsdenian	320.2 *
								Kinderscoutian	321.5 *
								Alportian	322 *
								Chokierian	323.1 *
	Mississippian	Serpukhovian						Chokierian	323.2
								Arnsbergian	324 *
								Pendleian	327.4 *
		Visean	Warnantian					Brigantian †	330.9
			Livian					Asbian †	336.3 *
			Moliniacian					Holkerian †/Arundian/Chadian	340.2 *
		Tournaisian	Ivorian						346.7
		Tournaisian	Hastarian						353.7 *
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		443.8
		Katian		445.2
		Sandbian		453
	Middle Ordovician	Darriwilian		458.4
	Middle Ordovician	Dapingian		467.3
	Early Ordovician	Floian		470
	Early Ordovician	Tremadocian		477.7
Cambrian	Furongian	Stage 10		Franconian †/Dresbachian/Millardan							485.4
		Stage 10									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					Waucoban †			Delamaran	509
		Stage 4								Dyeran	511 *
		Stage 3								Dyeran	514
						Montezuman				514.8 *
						Begadean				519.9 *
	Terreneuvian	Stage 2								521
	Terreneuvian	Fortunian								529
														538.8