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			Ordovician of Australia	Cambrian of North America		Permian-Jurassic of New Zealand		Cambrian of Australia	Permian of North America		Devonian of France
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								Makarewan					251.902
		Changhsingian								Waiitian					253.2
		Wuchiapingian		Longtanian †						Waiitian					254.14
		Wuchiapingian		Longtanian †						Puruhauan					254.2
	Guadalupian	Capitanian							Aparima	Flettian		Capitanian			259.51
		Wordian			Wordian	264.28				Flettian
		Wordian			Wordian	Barettian	266
		Roadian			Roadian		266.9
	Cisuralian	Kungurian			Leonardian		Cathedralian	273.01
						Mangapirian	Cathedralian	276
							Hessian	281.9 *
		Artinskian						283.5
						Telfordian		285
					Wolfcampian	Telfordian	Lenoxian	286.1 *
									288.5
		Sakmarian							290.1
		Asselian					Nealian		293.52
Carboniferous	Pennsylvanian	Gzhelian							298.9
		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	Givetian						382.7
	Middle Devonian	Eifelian	Couvinien						387.7
	Early Devonian	Emsian							393.3
		Pragian							407.6
		Pragian	Coblencien						408.2 *
		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							Bolindian	443.8
		Katian							Bolindian	445.2
									Eastonian	449 *
									Gisbornian	452 *
		Sandbian							Gisbornian	453
	Middle Ordovician	Darriwilian							Darriwilian	458.4
		Dapingian							Yapeenian	467.3
		Dapingian							Castlemainian	468.5 *
	Early Ordovician	Floian							Chewtonian	470
									Bendigonian	471.8 *
									Lancefieldian	473.5 *
		Tremadocian							Lancefieldian	477.7
		Tremadocian							Warendian	482.8 *
Cambrian	Furongian	Stage 10								Franconian †/Dresbachian/Millardan	Datsonian	485.4
											Payntonian	486.8 *
											Payntonian	Sunwaptan	487.5
		Jiangshanian									Iverian	Sunwaptan	489.5
		Jiangshanian									Iverian	Steptoean	493 *
		Paibian									Idamean	Steptoean	494
	Miaolingian	Guzhangian								Series 3 †	Marjumian	Albertian †	Mindyallan	497
		Guzhangian											Boomerangian	499
		Drumian											Undillan	500.5
		Drumian											Floran	503
		Wuliuan		Stage 5 †							Topazan		Templetonian	504.5
											Delamaran		Templetonian	506.5
													Ordian	507.8 *
	Series 2	Stage 4										Waucoban †	Ordian	509
														510.8 *
											Dyeran			511 *
		Stage 3									Dyeran			514
											Montezuman			514.8 *
											Begadean			519.9 *
	Terreneuvian	Stage 2												521
	Terreneuvian	Fortunian												529
															538.8