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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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
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 North America		European Faunal Units	Cretaceous-Cenozoic of New Zealand		Carboniferous Subepochs	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 †					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			Franconian †/Dresbachian/Millardan		Batyrbaian	Niuchehean	Taoyuanian †	485.4
												486.3 *
												486.5
												Sunwaptan	487.5
		Jiangshanian								Jiangshanian			489.5
									Aksaian				490.7 *
									Sakian				492.2 *
												Steptoean	493 *
		Paibian								Paibian			494
		Paibian								Paibian	Waergangian †/Youshuanian		494.9 *
	Miaolingian	Guzhangian					Series 3 †		Marjumian	Albertian †	Ayusokkanian	Guzhangian	Wangcunian †	497
		Guzhangian									499.5	Guzhangian
		Drumian			Zhanaarykian						Drumian	500.5
		Drumian			Tuesaian						Drumian	503
		Wuliuan			Tuesaian				Stage 5 †		Topazan	Wuliuan/Taijangian		504.5
											Topazan			505.3
											Delamaran			506.5
	Series 2	Stage 4								Waucoban †		Duyunian		509
					Toyonian									510 *
					Toyonian						Dyeran			511 *
					Botomian									512.5 *
		Stage 3										Nangaoian		514
											Montezuman			514.8 *
					Atdabanian						Montezuman			515.6 *
					Atdabanian						Begadean			519.9 *
	Terreneuvian	Stage 2			Tommotian	Meishucunian						521
		Stage 2										525.5
		Fortunian										529
		Fortunian				Jinnigian						530.7
															538.8