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. 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		Devonian of Eastern North America		Permian of the Pamirs	Permian-Jurassic of New Zealand		Cambrian of North America
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												23.03
	Oligocene	Rupelian												27.82
	Eocene	Priabonian												33.9
		Bartonian												37.71
		Lutetian												41.2
		Ypresian												47.8
	Paleocene	Thanetian												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						Kuzel	298.9
								Stephanian	Stephanian C	300.3 *
									Stephanian B	300.9 *
			Stephanian A						301.4 *
		Kasimovian	Stephanian A						303.7
		Kasimovian	Cantabrian						305 *
		Moscovian	Cantabrian						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							Conewangan/Conneautan/Canadaway	Late Famennian	358.9
										Middle Famennian	365.3 *
										Early Famennian	368.5 *
		Frasnian							West Fallsian/Sonyean	Late Frasnian	372.2
										Middle Frasnian	375.4 *
										Early Frasnian	379.3 *
	Middle Devonian	Givetian							Geneseean/Taghanican/Tioughniogan	Cazenovian	Late Givetian	382.7
											Middle Givetian	383.7 *
											Early Givetian	385.9 *
		Eifelian							Southwoodian		Late Eifelian	387.7
		Eifelian							Southwoodian		Early Eifelian	390.3 *
	Early Devonian	Emsian							Sawkillian/Deer Parkian	Helderbergian	Late Emsian	393.3
		Emsian							Sawkillian/Deer Parkian		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										Sunwaptan	489.5
		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