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
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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
Z.-X. Qiu and Z.-D. Qiu. 1995. Chronological sequence and subdivision of Chinese Neogene mammalian faunas. Palaeogeography, Palaeoclimatology, Palaeoecology 116(1-2):41-70 view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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 North America						Permian of North America		Carboniferous Subepochs	Neogene Mammal Ages of China	Permian of the Salt Range	Permian of Western Europe	Cretaceous Subepochs
Quaternary	Pleistocene	Late Pleistocene													Nihewanian				0.0117
		Chibanian																	0.129
		Calabrian																	0.774
		Gelasian																	1.8
Neogene	Pliocene	Piacenzian	Tertiary †												Yushean				2.58
		Zanclean													Yushean				3.6
		Zanclean													Baodean				4.9
	Miocene	Messinian																	5.333
		Tortonian																	7.246
		Tortonian													Tunggurian				11.1
		Serravallian													Tunggurian				11.63
		Langhian													Shanwangian				13.82
		Burdigalian													Shanwangian				15.98
		Burdigalian													Xiejiaan				16.9
		Aquitanian													Xiejiaan				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
		Induan																	251.2
		Induan														Kathwai			251.5 *
Permian	Lopingian	Changhsingian														Kathwai			251.902
																			252.4 *
																Chhidru			252.9 *
		Wuchiapingian		Longtanian †												Chhidru	Zechstein		254.14
																Kalabagh			255 *
																Wargal			256 *
	Guadalupian	Capitanian										Capitanian					Rotliegendes		259.51
		Wordian										Wordian							264.28
																			265.3 *
					Amb	266.1 *
		Roadian			Amb	Roadian	266.9
		Roadian				Roadian	270.7 *
	Cisuralian	Kungurian				Leonardian	Cathedralian	273.01
		Kungurian					Hessian	281.9 *
		Artinskian					Hessian	Autunian	283.5
		Artinskian				Wolfcampian	Lenoxian		286.1 *
		Sakmarian					Lenoxian		290.1
		Asselian					Nealian		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								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	Cincinnatian							Gamachian	Ashgill	Hirnantian	443.8
		Katian								Gamachian		Rawtheyan	445.2
										Richmondian		Rawtheyan	446 *
												Cautleyan	448.9 *
												Pusgillian	449.3 *
											Caradoc	Streffordian	Onnian †	449.6 *
										Maysvillian				Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
										Edenian					450.4 *
			Mohawkian							Chatfieldian					451.1 *
												Cheneyan			451.5 *
												Burrellian			452.7 *
		Sandbian													453
													Actonian †		453.2 *
										Turinian			Actonian †		453.7 *
													Marshbrookian †		Woolstonian †	454.2 *
													Longvillian †			455.2 *
												Aurelucian				456.8 *
			Whiterockian											Canadian †		Chazyan †/Marmor	457 *
													Soudleyan †/Harnagian/Costonian				457.4 *
	Middle Ordovician	Darriwilian									Llanvirn	Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn					458.4
		Darriwilian										Abereiddian/Early Llanvirn					461.3 *
		Dapingian										Abereiddian/Early Llanvirn					467.3
											Arenig	Fennian					468.4 *
										Rangerian							469.1 *
	Early Ordovician	Floian	Ibexian							Blackhillsian						Jeffersonian †	Cassinian †	470
										Blackhillsian		Whitlandian						471.1 *
										Tulean		Whitlandian						473.9 *
												Moridunian						474.3 *
		Tremadocian									Tremadoc	Migneintian						477.7
										Stairsian		Migneintian						480.3 *
				Cressagian						Stairsian		480.8 *
				Cressagian						Skullrockian		Demingian †					482 *
												Demingian †					485 *
Cambrian	Furongian	Stage 10															485.4
		Stage 10															487.5
		Jiangshanian			489.5
		Paibian			494
	Miaolingian	Guzhangian			Series 3 †												497
		Drumian															500.5
		Wuliuan															Stage 5 †	504.5
																			509