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
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
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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			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		Flettian	264.28
		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							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							Datsonian	485.4
		Stage 10							Payntonian	486.8 *
		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 *