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
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			Cambrian of China		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				Geneseean/Taghanican/Tioughniogan	Cazenovian	382.7
	Middle Devonian	Eifelian				Southwoodian	Cazenovian	387.7
	Early Devonian	Emsian				Sawkillian/Deer Parkian	Helderbergian	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	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	Niuchehean	Taoyuanian †							Pakerort				Merioneth	Dolgellian/Trempealeauan					485.4
																					486.3 *
																					486.5
																					487.5
																Festiniogian					489.2 *
		Jiangshanian	Jiangshanian		489.5											Festiniogian
		Jiangshanian	Jiangshanian		Maentwrogian											493.1 *
		Paibian	Paibian													494
		Paibian	Paibian	Waergangian †/Youshuanian												494.9 *
	Miaolingian	Guzhangian	Series 3 †	Guzhangian	Wangcunian †										St Davids						497
		Drumian		Drumian	Wangcunian †																500.5
		Wuliuan		Stage 5 †	Wuliuan/Taijangian																	504.5
	Series 2	Stage 4			Duyunian										Caerfai							509
	Series 2	Stage 3			Nangaoian																	514
	Terreneuvian	Stage 2			Meishucunian																	521
		Fortunian			Meishucunian																	529
		Fortunian			Jinnigian																	530.7
																							538.8