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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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			Cretaceous-Cenozoic of New Zealand		Cambrian of Britain		Devonian of France	Carboniferous of China	Ten Million Year Bins	Silurian of the Baltic	Cambrian of West Avalonia	Permian of China
Quaternary	Holocene	Meghalayan				Wanganui	Haweran					Cenozoic 6				0
		Northgrippian														0.0042
		Greenlandian														0.0082
	Pleistocene	Late Pleistocene														0.0117
		Chibanian														0.129
		Chibanian					Castlecliffian									0.34
		Calabrian					Castlecliffian									0.774
		Calabrian					Nukumaruan									1.63
		Gelasian					Nukumaruan									1.8
		Gelasian					Mangapanian									2.4
Neogene	Pliocene	Piacenzian	Tertiary †				Mangapanian									2.58
		Piacenzian					Waipipian									3
		Zanclean					Waipipian									3.6
		Zanclean					Opoitian									3.7
	Miocene	Messinian				Taranaki	Kapitean									5.333
		Messinian					Tongaporutuan									7.2
		Tortonian					Tongaporutuan									7.246
		Tortonian				Southland	Waiauan									11.04
		Serravallian					Waiauan					Cenozoic 5				11.63
		Serravallian					Lillburnian									13.05
		Langhian					Lillburnian									13.82
							Clifdenian									15.1
						Pareora	Altonian									15.9
		Burdigalian					Altonian									15.98
		Burdigalian					Otaian									18.7
		Aquitanian					Otaian									20.44
		Aquitanian				Landon	Waitakian									21.7
Paleogene	Oligocene	Chattian					Waitakian					Cenozoic 4				23.03
							Duntroonian									25.2
							Whaingaroan									27.3
		Rupelian														27.82
	Eocene	Priabonian										Cenozoic 3				33.9
						Arnold	Runangan									34.6
							Kaiatan									36.7
		Bartonian					Kaiatan									37.71
		Bartonian					Bortonian									39.1
		Lutetian					Bortonian					Cenozoic 2				41.2
						Dannevirke	Porangan									42.6
							Heretaungan									45.7
		Ypresian					Heretaungan									47.8
							Mangaorapan									48.9
							Waipawan									52
	Paleocene	Thanetian					Teurian					Cenozoic 1				56
		Selandian														59.2
		Danian														61.6
Cretaceous	Late Cretaceous	Maastrichtian				Mata	Haumurian					Cretaceous 8				66
		Campanian					Haumurian					Cretaceous 7				72.1
		Santonian					Piripauan					Cretaceous 6				83.6
		Santonian				Raukumara	Teratan									86.1
		Coniacian														86.3
		Turonian														89.8
							Mangaotanean									90.5
							Arowhanan									93.7
		Cenomanian					Arowhanan					Cretaceous 5				93.9
						Clarence	Ngaterian									95.2
							Motuan									99.5
	Early Cretaceous	Albian					Motuan					Cretaceous 4				100.5
							Urutawan									103.3
						Taitai	Korangan									108.4
		Aptian					Korangan					Cretaceous 3				113
		Aptian										Cretaceous 3				117.5
		Barremian										Cretaceous 2				121.4
		Hauterivian										Cretaceous 2				125.77
		Valanginian										Cretaceous 1				132.6
		Berriasian		139.8								Cretaceous 1
Jurassic	Late Jurassic	Tithonian			Jurassic 6	145
		Kimmeridgian			Jurassic 5	149.2
		Oxfordian				154.8
	Middle Jurassic	Callovian				161.5
		Bathonian			Jurassic 4	165.3
		Bajocian			Jurassic 4	168.2
		Aalenian			Jurassic 3	170.9
	Early Jurassic	Toarcian			Jurassic 3	174.7
		Pliensbachian			Jurassic 2	184.2
		Sinemurian			Jurassic 1	192.9
		Hettangian			Jurassic 1	199.5
Triassic	Late Triassic	Rhaetian			Triassic 4	201.4
		Norian			Triassic 4	208.5
		Carnian			Triassic 3	227
	Middle Triassic	Ladinian			Triassic 2	237
	Middle Triassic	Anisian			Triassic 2	242
	Early Triassic	Olenekian			Triassic 1	247.2
	Early Triassic	Induan			Triassic 1	251.2
Permian	Lopingian	Changhsingian			Permian 4	Meishanian		251.902
		Changhsingian				Baoqingian		253.4 *
		Wuchiapingian				Longtanian †		Laoshanian	254.14
		Wuchiapingian				Longtanian †		Laibinian	257.7 *
	Guadalupian	Capitanian						Lengwuan	259.51
		Wordian						Kuhfengian	264.28
		Roadian			Permian 3			Kuhfengian	266.9
	Cisuralian	Kungurian			Permian 2			Luodianian	273.01
		Artinskian						Luodianian	283.5
		Artinskian						Longlinian	285.4 *
		Sakmarian						Longlinian	290.1
		Asselian			Permian 1			Zisongian	293.52
Carboniferous	Pennsylvanian	Gzhelian			Carboniferous 5				298.9
									Xiaodushanian	300 *
										300.1
		Kasimovian								303.7
		Kasimovian							Dalaun	305.8 *
		Moscovian			Carboniferous 4					307
		Bashkirian								315.2
									Huashibanian	318.5 *
									Lousuan	321.2 *
	Mississippian	Serpukhovian			Dewunian				Carboniferous 3	323.2
		Serpukhovian			Shangsian				Carboniferous 3	330.8 *
		Visean			Shangsian				Carboniferous 2	330.9
		Visean			Jiusian				Carboniferous 2	335 *
		Tournaisian			Tangbagouan				Carboniferous 1	346.7
Devonian	Late Devonian	Famennian	Famennian						Devonian 5	358.9
	Late Devonian	Frasnian	Frasnian						Devonian 4	372.2
	Middle Devonian	Givetian	Givetian						Devonian 3	382.7
	Middle Devonian	Eifelian	Couvinien						Devonian 3	387.7
	Early Devonian	Emsian							Devonian 2	393.3
		Pragian							Devonian 1	407.6
		Pragian	Coblencien							408.2 *
		Lochkovian	Gedinnine							410.8
Silurian	Pridoli								Silurian 2	Ohesaare	419.2
	Pridoli									Kaugetuma	421.7 *
	Ludlow	Ludfordian								Kuressaare	423
		Ludfordian								Paadla	423.4 *
		Gorstian								Paadla	425.6
	Wenlock	Homerian								Rootsikula	427.4
		Homerian								Jaagarahu	429.2 *
		Sheinwoodian					430.5			Jaagarahu
		Sheinwoodian					Jaani			431.8 *
	Llandovery	Telychian					Jaani		Silurian 1	433.4
		Telychian					Adavere			434 *
		Aeronian					Adavere			438.5
		Aeronian		Raikkula			439.4 *
		Rhuddanian		Raikkula			440.8
		Rhuddanian		Juuru			441.4 *
Ordovician	Late Ordovician	Hirnantian		Ordovician 5					443.8
		Katian		Ordovician 5					445.2
		Sandbian		Ordovician 4					453
	Middle Ordovician	Darriwilian		Ordovician 3					458.4
	Middle Ordovician	Dapingian		Ordovician 2					467.3
	Early Ordovician	Floian		Ordovician 2					470
	Early Ordovician	Tremadocian		Ordovician 1					477.7
Cambrian	Furongian	Stage 10		Merioneth					Dolgellian/Trempealeauan	Cambrian 5	Niuchehean	Taoyuanian †	485.4
		Stage 10							Festiniogian		Niuchehean		489.2 *
		Jiangshanian							Festiniogian		Jiangshanian		489.5
		Jiangshanian							Maentwrogian		Jiangshanian		493.1 *
		Paibian									Paibian		494
		Paibian									Paibian	Waergangian †/Youshuanian	494.9 *
	Miaolingian	Guzhangian		Series 3 †					St Davids		Cambrian 4	Guzhangian	Wangcunian †	497
		Guzhangian										Guzhangian		Arcadian	498.4
		Drumian										Drumian			500.5
		Wuliuan				Stage 5 †					Cambrian 3	Wuliuan/Taijangian			504.5
	Series 2	Stage 4							Caerfai		Cambrian 3	Branchian		Duyunian	509
		Stage 3									Cambrian 2	Branchian		Nangaoian	514
		Stage 3										Placentian		Nangaoian	517.1
	Terreneuvian	Stage 2												Meishucunian	521
		Fortunian									Cambrian 1			Meishucunian	529
		Fortunian									Cambrian 1			Jinnigian	530.7
																538.8