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
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
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. 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			Silurian of the Baltic	Permian-Jurassic of New Zealand		Devonian of Germany	Cambrian Epochs	Permian of the Salt Range	Cambrian of Britain		Cambrian of Siberia			Cretaceous Subepochs	Ordovician of the Baltic
Neogene	Pliocene	Piacenzian	Tertiary †																2.58
	Pliocene	Zanclean																	3.6
	Miocene	Messinian																	5.333
		Tortonian																	7.246
		Serravallian																	11.63
		Langhian																	13.82
		Burdigalian																	15.98
		Aquitanian																	20.44
Paleogene	Oligocene	Chattian																	23.03
	Oligocene	Rupelian																	27.82
	Eocene	Priabonian																	33.9
		Bartonian																	37.71
		Lutetian																	41.2
		Ypresian																	47.8
	Paleocene	Thanetian																	56
		Selandian																	59.2
		Danian																	61.6
Cretaceous	Late Cretaceous	Maastrichtian															Senonian		66
		Campanian																	72.1
		Santonian																	83.6
		Coniacian																	86.3
		Turonian																	89.8
		Cenomanian																	93.9
	Early Cretaceous	Albian															Gallic		100.5
		Aptian																	113
		Barremian																	121.4
		Hauterivian															Neocomian		125.77
		Valanginian																	132.6
		Berriasian																	139.8
Jurassic	Late Jurassic	Tithonian					Oteke	Puaroan											145
		Kimmeridgian					Oteke	Puaroan											149.2
							Kawhia	Ohauan											150
								Heterian											154.5
		Oxfordian																	154.8
	Middle Jurassic	Callovian																	161.5
		Callovian						Temaikan											164.3
		Bathonian																	165.3
		Bajocian																	168.2
		Aalenian																	170.9
	Early Jurassic	Toarcian																	174.7
		Toarcian					Herangi	Ururoan											176
		Pliensbachian						Ururoan											184.2
		Pliensbachian						Aratauran											188.9
		Sinemurian																	192.9
		Hettangian																	199.5
Triassic	Late Triassic	Rhaetian					Balfour	Otapirian											201.4
		Norian						Warepan											208.5
								Otamitan											217
								Oretian											221
		Carnian						Oretian											227
		Carnian					Gore	Kaihikuan											227.5
	Middle Triassic	Ladinian						Kaihikuan											237
		Ladinian						Etalian											238
		Anisian						Etalian											242
		Anisian						Malakovian											246
	Early Triassic	Olenekian						Malakovian											247.2
		Olenekian						Nelsonian											249
		Induan						Nelsonian											251.2
		Induan					DUrville	Makarewan			Kathwai								251.5 *
Permian	Lopingian	Changhsingian									Kathwai								251.902
																			252.4 *
											Chhidru								252.9 *
								Waiitian											253.2
		Wuchiapingian		Longtanian †				Waiitian											254.14
					Puruhauan	254.2
						Kalabagh		255 *
						Wargal		256 *
	Guadalupian	Capitanian			Aparima		Flettian	259.51
		Wordian						264.28
								265.3 *
							Barettian	266
						Amb		266.1 *
		Roadian				Amb		266.9
		Roadian						270.7 *
	Cisuralian	Kungurian						273.01
		Kungurian					Mangapirian	276
		Artinskian					Mangapirian	283.5
							Telfordian	285
								288.5
		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	Wocklum/Dasberg/Hemberg/Nehden						358.9
	Late Devonian	Frasnian	Adorf						372.2
	Middle Devonian	Givetian	Givetian						382.7
	Middle Devonian	Eifelian	Eifelian						387.7
	Early Devonian	Emsian	Emsian						393.3
		Pragian	Siegen						407.6
		Lochkovian	Gedinnine						410.8
Silurian	Pridoli		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	Jaagarahu							430.5
		Sheinwoodian	Jaani							431.8 *
	Llandovery	Telychian	Jaani							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								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		477.7							Hunneberg
				Varangu							481.3 *
				Pakerort							482.2 *
											Mansian †			483.55 *
Cambrian	Furongian	Stage 10									Late Cambrian	Merioneth		Dolgellian/Trempealeauan	Batyrbaian	Tavgian †	Ketyan †/Yurakian	485.4
																		486.3 *
										486.5
										Festiniogian				489.2 *
		Jiangshanian												489.5
														Aksaian	490.7 *
														Sakian	492.2 *
					Maentwrogian		493.1 *
		Paibian					494
		Paibian					Ensyan †/Maduan/Nganasanian			494.7 *
	Miaolingian	Guzhangian			Series 3 †		Middle Cambrian			St Davids		Ayusokkanian				497
		Guzhangian										Mayan/Menevian				499.5
		Drumian										Mayan/Menevian				500.5
		Wuliuan										Stage 5 †				Amgan/Solvan	504.5
	Series 2	Stage 4								Early Cambrian		Caerfai				Amgan/Solvan	509
														Toyonian		Lenian †	510 *
														Botomian			512.5 *
		Stage 3						514						Botomian
		Stage 3						Atdabanian								515.6 *
	Terreneuvian	Stage 2						Tommotian								521
		Stage 2						Nemakit-Daldynian								525.5
		Fortunian						Nemakit-Daldynian						Manykaian †		529
																			538.8