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, 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
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			Cenozoic Subepochs	Permian-Jurassic of New Zealand		Ordovician of Australia	Cretaceous Subepochs	Permian Subages of Germany	Devonian of France
Quaternary	Pleistocene	Late Pleistocene				Late Pleistocene							0.0117
		Chibanian				Middle Pleistocene							0.129
		Calabrian				Early Pleistocene							0.774
		Gelasian				Early Pleistocene							1.8
Neogene	Pliocene	Piacenzian	Tertiary †			Late Pliocene							2.58
	Pliocene	Zanclean				Early Pliocene							3.6
	Miocene	Messinian				Late Miocene							5.333
		Tortonian				Late Miocene							7.246
		Serravallian				Middle Miocene							11.63
		Langhian				Middle Miocene							13.82
		Burdigalian				Early Miocene							15.98
		Aquitanian				Early Miocene							20.44
Paleogene	Oligocene	Chattian				Late Oligocene							23.03
	Oligocene	Rupelian				Early Oligocene							27.82
	Eocene	Priabonian				Late Eocene							33.9
		Bartonian				Middle Eocene							37.71
		Lutetian				Middle Eocene							41.2
		Ypresian				Early Eocene							47.8
	Paleocene	Thanetian				Late Paleocene							56
		Selandian				Middle Paleocene							59.2
		Danian				Early Paleocene							61.6
Cretaceous	Late Cretaceous	Maastrichtian								Senonian			66
		Campanian											72.1
		Santonian											83.6
		Coniacian											86.3
		Turonian											89.8
		Cenomanian											93.9
	Early Cretaceous	Albian								Gallic			100.5
		Aptian											113
		Barremian											121.4
		Hauterivian								Neocomian			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			Buntsandstein		251.902
		Changhsingian		Waiitian	253.2
		Wuchiapingian		Waiitian	Longtanian †			Zechstein	254.14
		Wuchiapingian		Puruhauan	Longtanian †			Zechstein	254.2
	Guadalupian	Capitanian			Aparima		Flettian	Ohre/Aller	Rotliegendes		259.51
		Wordian					Flettian	Leine			264.28
		Wordian					Barettian	Leine			266
		Roadian									266.9
	Cisuralian	Kungurian									273.01
		Kungurian					Mangapirian				276
		Artinskian					Mangapirian		Autunian		283.5
							Telfordian				285
											288.5
		Sakmarian									290.1
		Asselian									293.52
Carboniferous	Pennsylvanian	Gzhelian							Late Pennsylvanian			298.9
		Kasimovian							Late Pennsylvanian			303.7
		Moscovian							Middle Pennsylvanian			307
		Bashkirian							Early Pennsylvanian			315.2
	Mississippian	Serpukhovian							Late Mississippian			323.2
		Visean							Middle Mississippian			330.9
		Tournaisian							Early Mississippian			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								485.4
		Jiangshanian								489.5
		Paibian								494
	Miaolingian	Guzhangian								Series 3 †		497
		Drumian										500.5
		Wuliuan		Stage 5 †								504.5
													509