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. 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
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			Carbo-Permian of the Russian Platform	Cambrian of West Avalonia	Carboniferous of Western Europe		European Faunal Units	Cretaceous-Cenozoic of New Zealand		Cambrian of Kazakhstan	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			Melekhovian	251.902
	Lopingian	Wuchiapingian				Longtanian †	254.14
	Guadalupian	Capitanian					259.51
		Wordian					264.28
		Wordian			Noginskian		264.9 *
		Roadian					266.9
	Cisuralian	Kungurian					273.01
		Kungurian			Pavlovoposadian		276.8 *
		Artinskian			Pavlovoposadian		283.5
		Artinskian			Rusavkinian		287.6 *
		Sakmarian					290.1
		Asselian					293.52
		Asselian					Kuzel	297.7
Carboniferous	Pennsylvanian	Gzhelian					Kuzel	Late Pennsylvanian	298.9
							Stephanian		Stephanian C	300.3 *
									Stephanian B	300.9 *
									Stephanian A	301.4 *
		Kasimovian			Dorogomilovian					303.7
					Khamovnikian					304.8
					Khamovnikian				Cantabrian	305 *
					Krevyakinian					305.8 *
		Moscovian			Myachkovian			Middle Pennsylvanian		307
					Myachkovian		Westphalian		Westphalian D	307.4 *
					Podolskian				Westphalian D	308.9 *
					Podolskian				Westphalian C	309.8
					Kashirian					311.4 *
			Vereian		313.8
			Vereian		Westphalian B				314.6
			Melekessian						314.8
		Bashkirian	Melekessian					Early Pennsylvanian	315.2
			Cheremshanian						316.9 *
			Cheremshanian		Westphalian A				317 *
			Prikamian		Westphalian A				318.6 *
			Prikamian		Namurian		Yeadonian		318.8 *
			Severokeltmian				Yeadonian		319.9 *
			Severokeltmian				Marsdenian		320.2 *
			Krasnopolyanian				Marsdenian		321.2 *
			Krasnopolyanian				Kinderscoutian		321.5 *
			Voznesenian				Kinderscoutian		321.9 *
							Alportian		322 *
							Chokierian		323.1 *
	Mississippian	Serpukhovian	Zapaltjubian				Chokierian	Late Mississippian	323.2
			Zapaltjubian				Arnsbergian		324 *
			Protvian						324.4 *
			Steshevian						326.8 *
			Steshevian				Pendleian		327.4 *
			Tarusian	329 *			Pendleian
		Visean	Venevian	Warnantian	Brigantian †		Middle Mississippian	330.9
			Mikhailovian					331.9 *
			Aleksinian					333.7 *
			Tulian					335.8 *
			Tulian	Livian	Asbian †			336.3 *
			Bobrikian	Livian	Asbian †			339.9 *
			Bobrikian	Moliniacian	Holkerian †/Arundian/Chadian			340.2 *
			Radaevkian	Moliniacian	Holkerian †/Arundian/Chadian			343.4 *
		Tournaisian	Kosvian	Ivorian			Early Mississippian	346.7
			Kizelian					350.7 *
			Cherepetian					351.9 *
			Cherepetian	Hastarian				353.7 *
			Karakubian					354.4 *
			Upinian					356.3 *
			Malevkian					357.6 *
			Gumerovian					358 *
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
											Ayusokkanian			Arcadian	498.4
															499.5
		Drumian									Zhanaarykian	Drumian			500.5
		Drumian									Tuesaian	Drumian			503
		Wuliuan									Tuesaian	Stage 5 †	Wuliuan/Taijangian			504.5
		Wuliuan										Stage 5 †	Wuliuan/Taijangian			505.3
	Series 2	Stage 4											Branchian	Duyunian		509
											Toyonian					510 *
					Botomian						512.5 *
		Stage 3			Botomian						Nangaoian			514
					Atdabanian									515.6 *
					Atdabanian								Placentian	517.1
	Terreneuvian	Stage 2			Tommotian						Meishucunian			521
		Stage 2												525.5
		Fortunian												529
		Fortunian									Jinnigian			530.7
																	538.8