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, 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
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
M. Kretzoi. 1942. Necroteuthis n. g. (Ceph. Dibr., Necroteuthidae N. F.) aus dem Oligozän von Budapest und das system der Dibranchiata. Földtani Közlöny 72:125-238 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			Devonian of Czechoslovakia	Devonian of Eastern North America		Cenozoic Subepochs	Permian of the Pamirs	Ordovician of China			Cambrian of Britain		Ordovician of the Baltic				European Faunal Units	Ordovician of North America
Quaternary	Pleistocene	Late Pleistocene							Late Pleistocene														0.0117
		Chibanian							Middle Pleistocene														0.129
		Calabrian							Early Pleistocene														0.774
		Gelasian							Early Pleistocene														1.8
Neogene	Pliocene	Piacenzian	Tertiary †						Late Pliocene											Villanyian			2.58
		Piacenzian							Late Pliocene											Ruscinian			3.1 *
		Zanclean							Early Pliocene											Ruscinian			3.6
	Miocene	Messinian							Late Miocene											Turolian			5.333
		Tortonian																		Turolian			7.246
		Tortonian																		Vallesian			8.7
		Serravallian							Middle Miocene											Astaracian			11.63
		Langhian							Middle Miocene											Astaracian			13.82
		Burdigalian							Early Miocene											Orleanian			15.98
		Burdigalian																		Agenian			20
		Aquitanian																		Agenian			20.44
Paleogene	Oligocene	Chattian							Late Oligocene														23.03
	Oligocene	Rupelian							Early Oligocene														27.82
	Eocene	Priabonian							Late Eocene														33.9
		Bartonian							Middle Eocene														37.71
		Lutetian							Middle Eocene														41.2
		Ypresian							Early Eocene														47.8
	Paleocene	Thanetian							Late Paleocene														56
		Selandian							Middle Paleocene														59.2
		Danian							Early Paleocene														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								Dorashamian													251.902
	Lopingian	Wuchiapingian		Longtanian †						Dzhulfian													254.14
	Guadalupian	Capitanian								Midian													259.51
		Wordian								Midian													264.28
		Wordian								Murgabian													266.2 *
		Roadian								Murgabian													266.9
	Cisuralian	Kungurian								Kubergandian													273.01
		Kungurian								Bolorian													279.8
		Artinskian								Bolorian													283.5
		Artinskian								Yakhtashian													286
		Sakmarian			Sakmarian	290.1
		Asselian			Asselian	293.52
Carboniferous	Pennsylvanian	Gzhelian				298.9
		Kasimovian				303.7
		Moscovian				307
		Bashkirian				315.2
	Mississippian	Serpukhovian				323.2
		Visean				330.9
		Tournaisian				346.7
Devonian	Late Devonian	Famennian				Conewangan/Conneautan/Canadaway	358.9
	Late Devonian	Frasnian				West Fallsian/Sonyean	372.2
	Middle Devonian	Givetian				Srbsko	Geneseean/Taghanican/Tioughniogan	Cazenovian		382.7
	Middle Devonian	Eifelian				Chotec	Southwoodian	Cazenovian		387.7
	Early Devonian	Emsian				Daleje/Zlichovian	Sawkillian/Deer Parkian	Helderbergian		393.3
		Pragian				Pragian				407.6
		Lochkovian				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	Hirnantian						Xiaoxita †/Shikou	Wufeng †	Harju	Porkuni	Cincinnatian	Gamachian	443.8
		Katian	Chientangkiangian									Pirgu		Gamachian	445.2
			Chientangkiangian											Richmondian	446 *
			Neichianshanian/Hanjiang												449.5
												Vormsi			449.6 *
												Vormsi		Maysvillian	Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
												Nabala		Maysvillian		Johvi †	450 *
												Nabala		Edenian			450.4 *
											Viru	Rakvere		Edenian			450.6 *
												Rakvere	Mohawkian	Chatfieldian			451.1 *
												Oandu					452 *
		Sandbian										Keila				Idavere †	453
												Keila		Turinian			453.7 *
												Haljala					453.9
												Kukruse					456.4 *
												Kukruse	Whiterockian		Canadian †		Chazyan †/Marmor	457 *
												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																467.3
														Rangerian					469.1 *
												Billingen		Rangerian					469.3 *
	Early Ordovician	Floian	Yiyangian										Ibexian	Blackhillsian			Jeffersonian †		Cassinian †	470
																Latorp †				470.1 *
												Hunneberg								473.7 *
														Tulean						473.9 *
		Tremadocian	Xinchangian																	477.7
				Lianghekou †						477.9 *
										Stairsian				480.3 *
										Stairsian		Varangu		481.3 *
										Skullrockian		Varangu		Demingian †					482 *
												Pakerort		Demingian †					482.2 *
Cambrian	Furongian	Stage 10										Pakerort		Merioneth	Dolgellian/Trempealeauan						485.4
																					486.3 *
																					486.5
																					487.5
															Festiniogian						489.2 *
		Jiangshanian			489.5										Festiniogian
		Jiangshanian			Maentwrogian										493.1 *
		Paibian			Maentwrogian										494
	Miaolingian	Guzhangian			Series 3 †									St Davids							497
		Drumian																			500.5
		Wuliuan																			Stage 5 †	504.5
	Series 2	Stage 4																			Caerfai	509
	Series 2	Stage 3																				514
	Terreneuvian	Stage 2																				521
	Terreneuvian	Fortunian																				529
																							538.8