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
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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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 the Baltic				Permian-Jurassic of New Zealand		Carboniferous Subepochs	Cambrian of Britain		Cretaceous-Cenozoic of New Zealand		Devonian of Eastern 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			66
		Campanian														Haumurian			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		Oteke	Puaroan		145
		Kimmeridgian		Oteke	Puaroan		149.2
				Kawhia	Ohauan		150
					Heterian		154.5
		Oxfordian					154.8
	Middle Jurassic	Callovian					161.5
		Callovian			Temaikan		164.3
		Bathonian					165.3
		Bajocian					168.2
		Aalenian					170.9
	Early Jurassic	Toarcian					174.7
		Toarcian		Herangi	Ururoan		176
		Pliensbachian			Ururoan		184.2
		Pliensbachian			Aratauran		188.9
		Sinemurian					192.9
		Hettangian					199.5
Triassic	Late Triassic	Rhaetian		Balfour	Otapirian		201.4
		Norian			Warepan		208.5
					Otamitan		217
					Oretian		221
		Carnian			Oretian		227
		Carnian		Gore	Kaihikuan		227.5
	Middle Triassic	Ladinian			Kaihikuan		237
		Ladinian			Etalian		238
		Anisian			Etalian		242
		Anisian			Malakovian		246
	Early Triassic	Olenekian			Malakovian		247.2
		Olenekian			Nelsonian		249
		Induan			Nelsonian		251.2
		Induan		DUrville	Makarewan		251.5
Permian	Lopingian	Changhsingian			Makarewan		Dorashamian	251.902
		Changhsingian			Waiitian		Dorashamian	253.2
		Wuchiapingian			Waiitian		Longtanian †	Dzhulfian	254.14
		Wuchiapingian			Puruhauan		Longtanian †	Dzhulfian	254.2
	Guadalupian	Capitanian			Aparima		Flettian	Midian	259.51
		Wordian					Flettian		264.28
							Barettian		266
								Murgabian	266.2 *
		Roadian						Murgabian	266.9
	Cisuralian	Kungurian						Kubergandian	273.01
							Mangapirian	Kubergandian	276
								Bolorian	279.8
		Artinskian							283.5
							Telfordian		285
			Yakhtashian				Telfordian	286
			Yakhtashian					288.5
		Sakmarian	Sakmarian					290.1
		Asselian	Asselian					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							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										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									Harju	Porkuni	443.8
		Katian										Pirgu	445.2
												Vormsi	449.6 *
												Nabala	Johvi †	450 *
											Viru	Rakvere		450.6 *
												Oandu		452 *
		Sandbian										Keila	Idavere †	453
												Haljala		453.9
												Kukruse		456.4 *
												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										Volkhov			467.3
		Dapingian										Billingen			469.3 *
	Early Ordovician	Floian		470
				Latorp †										470.1 *
												Hunneberg		473.7 *
		Tremadocian										Hunneberg		477.7
												Varangu		481.3 *
												Pakerort		482.2 *
Cambrian	Furongian	Stage 10										Pakerort		Merioneth	Dolgellian/Trempealeauan	Franconian †/Dresbachian/Millardan	485.4
																	486.3 *
																	486.5
																	Sunwaptan	487.5
															Festiniogian			489.2 *
		Jiangshanian			489.5
					Steptoean		493 *
							Maentwrogian								493.1 *
		Paibian					Maentwrogian	494
	Miaolingian	Guzhangian			Series 3 †		St Davids							Marjumian	Albertian †	497
		Drumian												Marjumian		500.5
		Wuliuan												Stage 5 †		Topazan	504.5
		Wuliuan												Stage 5 †		Delamaran	506.5
	Series 2	Stage 4												Caerfai	Waucoban †	Delamaran	509
		Stage 4														Dyeran	511 *
		Stage 3	514													Dyeran
			Montezuman													514.8 *
			Begadean													519.9 *
	Terreneuvian	Stage 2														521
	Terreneuvian	Fortunian														529
																			538.8