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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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			Cambrian of Britain		Cretaceous-Cenozoic of New Zealand		Cambrian of China		Ordovician of the Baltic
Quaternary	Holocene	Meghalayan						Wanganui	Haweran					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					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					23.03
									Duntroonian					25.2
									Whaingaroan					27.3
		Rupelian												27.82
	Eocene	Priabonian												33.9
								Arnold	Runangan					34.6
									Kaiatan					36.7
		Bartonian							Kaiatan					37.71
		Bartonian							Bortonian					39.1
		Lutetian							Bortonian					41.2
								Dannevirke	Porangan					42.6
									Heretaungan					45.7
		Ypresian							Heretaungan					47.8
									Mangaorapan					48.9
									Waipawan					52
	Paleocene	Thanetian							Teurian					56
		Selandian												59.2
		Danian												61.6
Cretaceous	Late Cretaceous	Maastrichtian						Mata	Haumurian					66
		Campanian							Haumurian					72.1
		Santonian							Piripauan					83.6
		Santonian						Raukumara	Teratan					86.1
		Coniacian												86.3
		Turonian												89.8
									Mangaotanean					90.5
									Arowhanan					93.7
		Cenomanian							Arowhanan					93.9
								Clarence	Ngaterian					95.2
									Motuan					99.5
	Early Cretaceous	Albian							Motuan					100.5
									Urutawan					103.3
								Taitai	Korangan					108.4
		Aptian							Korangan					113
		Aptian												117.5
		Barremian												121.4
		Hauterivian												125.77
		Valanginian												132.6
		Berriasian		139.8
Jurassic	Late Jurassic	Tithonian			145
		Kimmeridgian			149.2
		Oxfordian			154.8
	Middle Jurassic	Callovian			161.5
		Bathonian			165.3
		Bajocian			168.2
		Aalenian			170.9
	Early Jurassic	Toarcian			174.7
		Pliensbachian			184.2
		Sinemurian			192.9
		Hettangian			199.5
Triassic	Late Triassic	Rhaetian			201.4
		Norian			208.5
		Carnian			227
	Middle Triassic	Ladinian			237
	Middle Triassic	Anisian			242
	Early Triassic	Olenekian			247.2
	Early Triassic	Induan			251.2
Permian	Lopingian	Changhsingian			251.902
	Lopingian	Wuchiapingian			Longtanian †	254.14
	Guadalupian	Capitanian				259.51
		Wordian				264.28
		Roadian				266.9
	Cisuralian	Kungurian				273.01
		Artinskian				283.5
		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					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	Harju				Porkuni	443.8
		Katian					Pirgu	445.2
							Vormsi	449.6 *
							Nabala	Johvi †		450 *
			Viru				Rakvere			450.6 *
							Oandu			452 *
		Sandbian					Keila	Idavere †		453
							Haljala			453.9
							Kukruse			456.4 *
							Uhaku	Aluoja †		457.5 *
	Middle Ordovician	Darriwilian					Uhaku		458.4
							Lasnamagi		458.9 *
							Aseri		460.4 *
			Oeland				Kunda		462.9 *
							Kunda	Valaste †/Hunderum	464.3 *
				Volkhov			Langevoja †/Vaana/Saka		467.1 *
		Dapingian		Volkhov					467.3
		Dapingian		Billingen					469.3 *
	Early Ordovician	Floian							470
							Latorp †		470.1 *
				Hunneberg					473.7 *
		Tremadocian		Hunneberg					477.7
				Varangu					481.3 *
				Pakerort					482.2 *
Cambrian	Furongian	Stage 10		Pakerort			Merioneth		Dolgellian/Trempealeauan	Niuchehean	Taoyuanian †	485.4
												486.3 *
												486.5
									Festiniogian			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		Guzhangian	Wangcunian †	497
		Drumian									Drumian	Wangcunian †	500.5
		Wuliuan			Stage 5 †						Wuliuan/Taijangian		504.5
	Series 2	Stage 4							Caerfai		Duyunian		509
	Series 2	Stage 3									Nangaoian		514
	Terreneuvian	Stage 2									Meishucunian		521
		Fortunian									Meishucunian		529
		Fortunian									Jinnigian		530.7
														538.8