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. 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, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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
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 Eastern North America		Cenozoic Subepochs	European Faunal Units	Cambrian of Siberia			Ordovician of the Baltic				Devonian Subages	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																		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			Conewangan/Conneautan/Canadaway	Late Famennian	358.9
						Middle Famennian	365.3 *
						Early Famennian	368.5 *
		Frasnian			West Fallsian/Sonyean	Late Frasnian	372.2
						Middle Frasnian	375.4 *
						Early Frasnian	379.3 *
	Middle Devonian	Givetian			Geneseean/Taghanican/Tioughniogan	Cazenovian	Late Givetian			382.7
							Middle Givetian			383.7 *
							Early Givetian			385.9 *
		Eifelian			Southwoodian		Late Eifelian		387.7
		Eifelian			Southwoodian		Early Eifelian		390.3 *
	Early Devonian	Emsian			Sawkillian/Deer Parkian	Helderbergian	Late Emsian		393.3
		Emsian			Sawkillian/Deer Parkian		Early Emsian		398.3 *
		Pragian					Pragian		407.6
		Lochkovian					Late Lochkovian		410.8
							Middle Lochkovian		412.8 *
							Early Lochkovian		415.6 *
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		Cincinnatian	Gamachian	443.8
		Katian						Pirgu			Gamachian	445.2
								Pirgu			Richmondian	446 *
								Vormsi			Richmondian	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						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													467.3
											Rangerian				469.1 *
				Billingen							Rangerian				469.3 *
	Early Ordovician	Floian								Ibexian	Blackhillsian			Jeffersonian †	Cassinian †	470
								Latorp †								470.1 *
				Hunneberg												473.7 *
											Tulean					473.9 *
		Tremadocian									Tulean					477.7
											Stairsian					480.3 *
				Varangu							Stairsian					481.3 *
				Varangu							Skullrockian				Demingian †	482 *
				Pakerort												482.2 *
																Mansian †	483.55 *
Cambrian	Furongian	Stage 10						Batyrbaian				Tavgian †		Ketyan †/Yurakian				485.4
																		486.3 *
																		486.5
																		487.5
		Jiangshanian																489.5
								Aksaian										490.7 *
								Sakian										492.2 *
		Paibian																494
		Paibian												Ensyan †/Maduan/Nganasanian				494.7 *
	Miaolingian	Guzhangian						Series 3 †				Ayusokkanian							497
		Guzhangian			Mayan/Menevian							499.5
		Drumian			Mayan/Menevian							500.5
		Wuliuan			Stage 5 †							Amgan/Solvan							504.5
	Series 2	Stage 4										Amgan/Solvan							509
						Toyonian	Lenian †					510 *
						Botomian						512.5 *
		Stage 3				Botomian						514
		Stage 3				Atdabanian						515.6 *
	Terreneuvian	Stage 2				Tommotian						521
		Stage 2				Nemakit-Daldynian						525.5
		Fortunian				Nemakit-Daldynian	Manykaian †					529
																				538.8