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
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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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

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 of the Salt Range	Permian-Jurassic of New Zealand		Cenozoic Subepochs	Cretaceous North American Land-Mammal Ages
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								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				Kathwai	DUrville	Makarewan			251.5 *
Permian	Lopingian	Changhsingian				Kathwai					251.902
					252.4 *
				Chhidru	252.9 *
					Waiitian	253.2
		Wuchiapingian			Waiitian	Longtanian †		254.14
					Puruhauan			254.2
				Kalabagh				255 *
				Wargal				256 *
	Guadalupian	Capitanian				Aparima	Flettian	259.51
		Wordian						264.28
								265.3 *
							Barettian	266
				Amb				266.1 *
		Roadian		Amb				266.9
		Roadian						270.7 *
	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	358.9
	Late Devonian	Frasnian	372.2
	Middle Devonian	Givetian	382.7
	Middle Devonian	Eifelian	387.7
	Early Devonian	Emsian	393.3
		Pragian	407.6
		Lochkovian	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	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