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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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			Ordovician of China			European Faunal Zones	Devonian of Germany	Carboniferous Subepochs	Ordovician of the Baltic
Quaternary	Pleistocene	Gelasian							MN 17						1.8
Neogene	Pliocene	Piacenzian	Tertiary †						MN 16						2.58
		Piacenzian							MN 15						3.2
		Zanclean							MN 15						3.6
									MN 14						4.2
									MN 13						4.9
	Miocene	Messinian							MN 13						5.333
		Tortonian							MN 12						7.246
									MN 11						7.75
									MN 10						8.7
									MN 9						9.7
									MN 7 + 8						11.1
		Serravallian							MN 7 + 8						11.63
		Serravallian							MN 6						12.8 *
		Langhian							MN 5						13.82
		Burdigalian							MN 4						15.98
									MN 3						16.9
									MN 2						20
		Aquitanian							MN 2						20.44
		Aquitanian							MN 1						22.4
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													66
		Campanian													72.1
		Santonian													83.6
		Coniacian													86.3
		Turonian													89.8
		Cenomanian													93.9
	Early Cretaceous	Albian													100.5
		Aptian													113
		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			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						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					Hirnantian	Xiaoxita †/Shikou	Wufeng †	Harju	Porkuni	443.8
		Katian					Chientangkiangian		Wufeng †		Pirgu	445.2
							Neichianshanian/Hanjiang				Pirgu	449.5
			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					Darriwilian	Guniu †/Hulo		Uhaku		458.4
										Lasnamagi		458.9 *
										Aseri		460.4 *
			Oeland							Kunda		462.9 *
											Valaste †/Hunderum	464.3 *
								Hunjiang †	Dawan †/Daobaowan/Ningkuo			466.3 *
										Volkhov		Langevoja †/Vaana/Saka	467.1 *
		Dapingian					Dapingian			Volkhov			467.3
		Dapingian					Dapingian			Billingen			469.3 *
	Early Ordovician	Floian					Yiyangian						470
											Latorp †		470.1 *
										Hunneberg			473.7 *
		Tremadocian					Xinchangian						477.7
									Lianghekou †				477.9 *
										Varangu			481.3 *
										Pakerort			482.2 *
Cambrian	Furongian	Stage 10								Pakerort			485.4
													486.3 *
													486.5
		Jiangshanian											489.5
		Paibian											494
	Miaolingian	Guzhangian											Series 3 †	497
		Drumian												500.5
		Wuliuan		Stage 5 †										504.5
															509