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
J. I. Raine, A. G. Beu, A. F. Boyes, H. J. Campbell, R. A. Cooper, J. S. Crampton, M. P. Crundwell, C. J. Hollis, and H. E. G. Morgans. 2015. Revised Calibration of the New Zealand Geological Timescale: NZGT2015/1. GNS Science Report 2012(39) view
J. A. Lillegraven and M. C. McKenna. 1986. Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages". American Museum Novitates 2840:1-68 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
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			Cretaceous-Cenozoic of New Zealand		Cretaceous North American Land-Mammal Ages	Devonian of Czechoslovakia	Cambrian of Australia	Ordovician of Ibero-Bohemia				Cambrian of Britain		Permian of Western Europe	Silurian of England		Ordovician of North America
Quaternary	Holocene	Meghalayan				Wanganui	Haweran																0
		Northgrippian																					0.0042
		Greenlandian																					0.0082
	Pleistocene	Late Pleistocene																					0.0117
		Chibanian																					0.129
		Chibanian					Castlecliffian																0.34
		Calabrian					Castlecliffian																0.774
		Calabrian					Nukumaruan																1.63
		Gelasian					Nukumaruan																1.8
		Gelasian					Mangapanian																2.4
Neogene	Pliocene	Piacenzian	Tertiary †				Mangapanian																2.58
		Piacenzian					Waipipian																3
		Zanclean					Waipipian																3.6
		Zanclean					Opoitian																3.7
	Miocene	Messinian				Taranaki	Kapitean																5.333
		Messinian					Tongaporutuan																7.2
		Tortonian					Tongaporutuan																7.246
		Tortonian				Southland	Waiauan																11.04
		Serravallian					Waiauan																11.63
		Serravallian					Lillburnian																13.05
		Langhian					Lillburnian																13.82
							Clifdenian																15.1
						Pareora	Altonian																15.9
		Burdigalian					Altonian																15.98
		Burdigalian					Otaian																18.7
		Aquitanian					Otaian																20.44
		Aquitanian				Landon	Waitakian																21.7
Paleogene	Oligocene	Chattian					Waitakian																23.03
							Duntroonian																25.2
							Whaingaroan																27.3
		Rupelian																					27.82
	Eocene	Priabonian																					33.9
						Arnold	Runangan																34.6
							Kaiatan																36.7
		Bartonian					Kaiatan																37.71
		Bartonian					Bortonian																39.1
		Lutetian					Bortonian																41.2
						Dannevirke	Porangan																42.6
							Heretaungan																45.7
		Ypresian					Heretaungan																47.8
							Mangaorapan																48.9
							Waipawan																52
	Paleocene	Thanetian					Teurian																56
		Selandian																					59.2
		Danian																					61.6
Cretaceous	Late Cretaceous	Maastrichtian				Mata	Haumurian	Lancian/Edmontonian															66
		Campanian					Haumurian	Judithian/Aquilan															72.1
		Santonian					Piripauan																83.6
		Santonian				Raukumara	Teratan																86.1
		Coniacian																					86.3
		Turonian																					89.8
							Mangaotanean																90.5
							Arowhanan																93.7
		Cenomanian					Arowhanan																93.9
						Clarence	Ngaterian																95.2
							Motuan																99.5
	Early Cretaceous	Albian					Motuan																100.5
							Urutawan																103.3
						Taitai	Korangan																108.4
		Aptian					Korangan																113
		Aptian																					117.5
		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 †	Zechstein			254.14
	Guadalupian	Capitanian				Rotliegendes			259.51
		Wordian							264.28
		Roadian							266.9
	Cisuralian	Kungurian							273.01
		Artinskian				Autunian			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							Srbsko	382.7
	Middle Devonian	Eifelian							Chotec	387.7
	Early Devonian	Emsian							Daleje/Zlichovian	393.3
		Pragian							Pragian	407.6
		Lochkovian							Lochkovian	410.8
Silurian	Pridoli									Red Downtonian/Temeside Shales/Downton Castle	Whitcliffe/Leintwardine	419.2
	Pridoli									Red Downtonian/Temeside Shales/Downton Castle	Bringewood/Elton	421.3
	Ludlow	Ludfordian								Coalbrookdale	Wenlock (England)/Tickwood	423
		Gorstian									425.6
		Gorstian	Buildwas								426.4 *
	Wenlock	Homerian	Buildwas					427.4
		Homerian	Wych					Woolhope		428.4 *
		Sheinwoodian								430.5
	Llandovery	Telychian								433.4
		Telychian								436.3 *
		Aeronian								438.5
		Aeronian	Cowleigh Park							439.3 *
		Rhuddanian	Cowleigh Park							440.8
Ordovician	Late Ordovician	Hirnantian	Kosovian								Cincinnatian	Gamachian	Harju	Porkuni	443.8
		Katian	Kralodvorian									Gamachian		Bohdalec †	Pirgu	445.2
												Richmondian			Pirgu	446 *
															Vormsi	449.6 *
			Berounian													449.7 *
							Maysvillian					Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian				449.8 *
							Maysvillian								Nabala	Johvi †	450 *
							Edenian								Nabala		450.4 *
							Edenian						Viru		Rakvere		450.6 *
							Mohawkian				Chatfieldian				Rakvere		451.1 *
				Oandu											452 *
		Sandbian		Keila											Idavere †	453
				Keila							Turinian					453.7 *
				Haljala												453.9
				Haljala												Zahorany †/Vinice	Letna †	456.2 *
				Kukruse														456.4 *
				Kukruse			Whiterockian					Canadian †						Chazyan †/Marmor	457 *
				Uhaku											Aluoja †				457.5 *
														Liben †					458 *
	Middle Ordovician	Darriwilian																	458.4
			Dobrotivian																458.5 *
			Dobrotivian	Lasnamagi															458.9 *
			Oretanian	Lasnamagi															459.7 *
				Aseri															460.4 *
				Aseri										Sarka †					461.7 *
				Oeland									Kunda						462.9 *
													Kunda		Valaste †/Hunderum				464.3 *
													Volkhov						Langevoja †/Vaana/Saka	467.1 *
		Dapingian												Klabava †						467.3
			Arenigian																	468
					Rangerian						469.1 *
					Rangerian						Billingen		469.3 *
	Early Ordovician	Floian			Ibexian		Blackhillsian						Jeffersonian †					Cassinian †		470
															Latorp †					470.1 *
											Hunneberg									473.7 *
							Tulean													473.9 *
		Tremadocian	Tremadocian				Tulean													477.7
						Stairsian	480.3 *
						Stairsian	Varangu				481.3 *
						Skullrockian	Varangu				Demingian †							482 *
							Pakerort				Demingian †							482.2 *
Cambrian	Furongian	Stage 10	Datsonian				Pakerort					Merioneth	Dolgellian/Trempealeauan								485.4
																					486.3 *
																					486.5
			Payntonian																		486.8 *
																					487.5
													Festiniogian								489.2 *
		Jiangshanian	Iverian										Festiniogian								489.5
		Jiangshanian	Iverian										Maentwrogian								493.1 *
		Paibian	Idamean										Maentwrogian								494
	Miaolingian	Guzhangian	Series 3 †									Mindyallan	St Davids									497
		Guzhangian							Boomerangian			499
		Drumian							Undillan			500.5
		Drumian							Floran			503
		Wuliuan							Stage 5 †			Templetonian										504.5
		Wuliuan							Stage 5 †			Ordian										507.8 *
	Series 2	Stage 4										Ordian	Caerfai									509
		Stage 4																				510.8 *
		Stage 3																				514
	Terreneuvian	Stage 2																				521
	Terreneuvian	Fortunian						529
																							538.8