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
J. A. Lillegraven and M. C. McKenna. 1986. Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages". American Museum Novitates 2840:1-68 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 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

Show more time

Show linear time

International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Cenozoic Subepochs	Permian-Jurassic of New Zealand		Cretaceous North American Land-Mammal Ages	Cambrian of Britain		Ordovician of Britain			Central Paratethys Stages
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									Pannonian	7.246
		Serravallian				Middle Miocene									Sarmatian	11.63
		Serravallian													Badenian	12.8 *
		Langhian														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							Lancian/Edmontonian							66
		Campanian							Judithian/Aquilan							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		251.902				Makarewan
		Changhsingian		Waiitian	253.2
		Wuchiapingian		Waiitian	Longtanian †			254.14
		Wuchiapingian		Puruhauan	Longtanian †			254.2
	Guadalupian	Capitanian			Aparima		Flettian	259.51
		Wordian					Flettian	264.28
		Wordian					Barettian	266
		Roadian						266.9
	Cisuralian	Kungurian						273.01
		Kungurian					Mangapirian	276
		Artinskian					Mangapirian	283.5
							Telfordian	285
								288.5
		Sakmarian						290.1
		Asselian						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	Wocklum/Dasberg/Hemberg/Nehden			358.9
	Late Devonian	Frasnian	Adorf			372.2
	Middle Devonian	Givetian	Givetian			382.7
	Middle Devonian	Eifelian	Eifelian			387.7
	Early Devonian	Emsian	Emsian			393.3
		Pragian	Siegen			407.6
		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				Ashgill		Hirnantian	443.8
		Katian						Rawtheyan	445.2
								Cautleyan	448.9 *
								Pusgillian	449.3 *
						Caradoc		Streffordian	Onnian †	449.6 *
								Cheneyan		451.5 *
								Burrellian		452.7 *
		Sandbian								453
									Actonian †	453.2 *
									Marshbrookian †	Woolstonian †	454.2 *
									Longvillian †		455.2 *
								Aurelucian	Longvillian †		456.8 *
								Aurelucian	Soudleyan †/Harnagian/Costonian		457.4 *
	Middle Ordovician	Darriwilian				Llanvirn		Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn			458.4
		Darriwilian						Abereiddian/Early Llanvirn			461.3 *
		Dapingian						Abereiddian/Early Llanvirn			467.3
		Dapingian				Arenig		Fennian			468.4 *
	Early Ordovician	Floian						Fennian			470
								Whitlandian			471.1 *
								Moridunian			474.3 *
		Tremadocian				Tremadoc		Migneintian			477.7
						Tremadoc		Cressagian			480.8 *
											485 *
Cambrian	Furongian	Stage 10									Merioneth	Dolgellian/Trempealeauan	485.4
		Stage 10										Festiniogian	489.2 *
		Jiangshanian										Festiniogian	489.5
		Jiangshanian										Maentwrogian	493.1 *
		Paibian										Maentwrogian	494
	Miaolingian	Guzhangian									Series 3 †	St Davids		497
		Drumian												500.5
		Wuliuan		Stage 5 †										504.5
	Series 2	Stage 4										Caerfai		509
	Series 2	Stage 3												514
	Terreneuvian	Stage 2												521
	Terreneuvian	Fortunian												529
																538.8