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
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			Cretaceous Subepochs	Ordovician of China			Cambrian of Britain		Ordovician of the Baltic				European Faunal Units	Ordovician of North America
Neogene	Pliocene	Piacenzian	Tertiary †													Villanyian				2.58
		Piacenzian														Ruscinian				3.1 *
		Zanclean														Ruscinian				3.6
	Miocene	Messinian														Turolian				5.333
		Tortonian														Turolian				7.246
		Tortonian														Vallesian				8.7
		Serravallian														Astaracian				11.63
		Langhian														Astaracian				13.82
		Burdigalian														Orleanian				15.98
		Burdigalian														Agenian				20
		Aquitanian														Agenian				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																		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																		298.9
		Kasimovian																		303.7
		Moscovian																		307
		Bashkirian																		315.2
	Mississippian	Serpukhovian																		323.2
		Visean			330.9
		Tournaisian			346.7
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			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 *
						Whiterockian			Kukruse		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 *
									Varangu	Stairsian						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									Festiniogian						489.5
		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