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. F. Steininger, W. A. Berggren, D. V. Kent, R. L. Bernor, S. Sen and J. Agusti. 1996. Circum-Mediterranean Neogene (Miocene and Pliocene) marine-continental chronologic correlations of European mammal units. The Evolution of Western Eurasian Neogene Mammal Faunas (eds. R. L. Bernor, V. Fahlbusch, and H.-W. Mittmann) 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
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

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			European Faunal Units	Cretaceous-Cenozoic of New Zealand		Carboniferous Subepochs	Cambrian of Kazakhstan		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 †			Villanyian		Mangapanian					2.58
						Villanyian		Waipipian					3
						Ruscinian							3.1 *
		Zanclean											3.6
		Zanclean						Opoitian					3.7
	Miocene	Messinian				Turolian	Taranaki	Kapitean					5.333
		Messinian						Tongaporutuan					7.2
		Tortonian											7.246
						Vallesian							8.7
						Vallesian	Southland	Waiauan					11.04
		Serravallian				Astaracian		Waiauan					11.63
		Serravallian						Lillburnian					13.05
		Langhian						Lillburnian					13.82
								Clifdenian					15.1
							Pareora	Altonian					15.9
		Burdigalian				Orleanian		Altonian					15.98
						Orleanian		Otaian					18.7
						Agenian							20
		Aquitanian											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					Ungurian	477.7
				Varangu						481.3 *
				Pakerort						482.2 *
Cambrian	Furongian	Stage 10		Pakerort			Batyrbaian		Niuchehean	Taoyuanian †	485.4
											486.3 *
											486.5
		Jiangshanian							Jiangshanian		489.5
							Aksaian				490.7 *
							Sakian				492.2 *
		Paibian							Paibian		494
		Paibian							Paibian	Waergangian †/Youshuanian	494.9 *
	Miaolingian	Guzhangian					Series 3 †		Ayusokkanian	Guzhangian	Wangcunian †	497
		Guzhangian								Guzhangian		499.5
		Drumian							Zhanaarykian	Drumian		500.5
		Drumian			Tuesaian				503	Drumian
		Wuliuan			Tuesaian				Stage 5 †	Wuliuan/Taijangian		504.5
		Wuliuan							Stage 5 †	Wuliuan/Taijangian		505.3
	Series 2	Stage 4								Duyunian		509
					Toyonian							510 *
					Botomian							512.5 *
		Stage 3			Botomian					Nangaoian		514
		Stage 3			Atdabanian					Nangaoian		515.6 *
	Terreneuvian	Stage 2			Tommotian					Meishucunian		521
		Stage 2										525.5
		Fortunian										529
		Fortunian								Jinnigian		530.7
													538.8