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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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

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			Carbo-Permian of the Russian Platform	Silurian of the Baltic	Carboniferous Subepochs	Cambrian of Britain		Cretaceous-Cenozoic of New Zealand		Devonian of Eastern North America		Permian of the Pamirs
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	Melekhovian	Dorashamian	251.902
		Changhsingian				Waiitian		Dorashamian	253.2
		Wuchiapingian				Waiitian		Longtanian †	Dzhulfian	254.14
		Wuchiapingian				Puruhauan		Longtanian †	Dzhulfian	254.2
	Guadalupian	Capitanian				Midian		Aparima	Flettian	259.51
		Wordian								264.28
							Noginskian			264.9 *
									Barettian	266
						Murgabian				266.2 *
		Roadian				Murgabian				266.9
	Cisuralian	Kungurian				Kubergandian				273.01
									Mangapirian	276
							Pavlovoposadian			276.8 *
						Bolorian				279.8
		Artinskian	283.5
			Telfordian						285
						Yakhtashian			286
							Rusavkinian		287.6 *
									288.5
		Sakmarian				Sakmarian			290.1
		Asselian				Asselian			293.52
Carboniferous	Pennsylvanian	Gzhelian				Late Pennsylvanian				298.9
		Kasimovian					Dorogomilovian			303.7
							Khamovnikian			304.8
							Krevyakinian			305.8 *
		Moscovian				Myachkovian	Middle Pennsylvanian			307
						Podolskian				308.9 *
						Kashirian				311.4 *
						Vereian				313.8
						Melekessian				314.8
		Bashkirian				Melekessian	Early Pennsylvanian			315.2
						Cheremshanian				316.9 *
						Prikamian				318.6 *
						Severokeltmian				319.9 *
				Krasnopolyanian		321.2 *
				Voznesenian		321.9 *
	Mississippian	Serpukhovian		Zapaltjubian		Late Mississippian	323.2
				Protvian			324.4 *
				Steshevian			326.8 *
				Tarusian			329 *
		Visean		Venevian		Middle Mississippian	330.9
				Mikhailovian			331.9 *
				Aleksinian			333.7 *
				Tulian			335.8 *
				Bobrikian			339.9 *
				Radaevkian			343.4 *
		Tournaisian		Kosvian		Early Mississippian	346.7
				Kizelian			350.7 *
				Cherepetian			351.9 *
				Karakubian			354.4 *
				Upinian			356.3 *
				Malevkian			357.6 *
				Gumerovian			358 *
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			443.8
		Katian			445.2
		Sandbian			453
	Middle Ordovician	Darriwilian			458.4
	Middle Ordovician	Dapingian			467.3
	Early Ordovician	Floian			470
	Early Ordovician	Tremadocian			477.7
Cambrian	Furongian	Stage 10			Merioneth			Dolgellian/Trempealeauan	Franconian †/Dresbachian/Millardan			485.4
								Dolgellian/Trempealeauan				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												Dyeran	514
														Montezuman	514.8 *
														Begadean	519.9 *
	Terreneuvian	Stage 2													521
	Terreneuvian	Fortunian													529
																538.8