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
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. 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			Silurian of the Baltic	Carboniferous of Western Europe		Ordovician of China			Permian of the Pamirs	Cretaceous-Cenozoic of New Zealand			Ordovician of Britain
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			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			Dorashamian	Buntsandstein	251.902
	Lopingian	Wuchiapingian			Longtanian †	Buntsandstein	Dzhulfian	254.14
	Guadalupian	Capitanian				Midian	Ohre/Aller	259.51
		Wordian				Midian	Leine	264.28
		Wordian				Murgabian	Leine	266.2 *
		Roadian				Murgabian		266.9
	Cisuralian	Kungurian				Kubergandian		273.01
		Kungurian				Bolorian		279.8
		Artinskian				Bolorian		283.5
		Artinskian				Yakhtashian		286
		Sakmarian				Sakmarian		290.1
		Asselian				Asselian		293.52
		Asselian				Asselian		Kuzel	297.7
Carboniferous	Pennsylvanian	Gzhelian						Kuzel	298.9
								Stephanian	Stephanian C	300.3 *
									Stephanian B	300.9 *
									Stephanian A	301.4 *
		Kasimovian							Stephanian A	303.7
		Kasimovian							Cantabrian	305 *
		Moscovian							Cantabrian	307
								Westphalian	Westphalian D	307.4 *
									Westphalian C	309.8
									Westphalian B	314.6
		Bashkirian							Westphalian B	315.2
									Westphalian A	317 *
								Namurian	Yeadonian	318.8 *
			Marsdenian						320.2 *
			Kinderscoutian						321.5 *
			Alportian						322 *
			Chokierian						323.1 *
	Mississippian	Serpukhovian	Chokierian						323.2
			Arnsbergian						324 *
			Pendleian						327.4 *
		Visean	Warnantian					Brigantian †	330.9
			Livian					Asbian †	336.3 *
			Moliniacian					Holkerian †/Arundian/Chadian	340.2 *
		Tournaisian	Ivorian						346.7
		Tournaisian	Hastarian						353.7 *
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								Ohesaare	Red Downtonian/Temeside Shales/Downton Castle	Whitcliffe/Leintwardine	419.2
				Bringewood/Elton					Ohesaare		421.3
				Bringewood/Elton					Kaugetuma		421.7 *
	Ludlow	Ludfordian		Kuressaare					Coalbrookdale	Wenlock (England)/Tickwood	423
		Ludfordian		Paadla						Wenlock (England)/Tickwood	423.4 *
		Gorstian									425.6
		Gorstian								Buildwas	426.4 *
	Wenlock	Homerian		Rootsikula						Buildwas	427.4
				Rootsikula					Wych	Woolhope	428.4 *
				Jaagarahu							429.2 *
		Sheinwoodian		Jaagarahu							430.5
		Sheinwoodian		Jaani							431.8 *
	Llandovery	Telychian		Jaani							433.4
				Adavere							434 *
											436.3 *
		Aeronian									438.5
									Cowleigh Park		439.3 *
				Raikkula							439.4 *
		Rhuddanian		Raikkula							440.8
		Rhuddanian		Juuru							441.4 *
Ordovician	Late Ordovician	Hirnantian							Hirnantian		Xiaoxita †/Shikou	Wufeng †	Ashgill	Hirnantian	443.8
		Katian			Chientangkiangian				Rawtheyan					445.2
									Cautleyan					448.9 *
									Pusgillian					449.3 *
					Neichianshanian/Hanjiang				Pusgillian			449.5
									Caradoc			Streffordian	Onnian †	449.6 *
												Cheneyan		451.5 *
												Burrellian		452.7 *
		Sandbian												453
													Actonian †	453.2 *
													Marshbrookian †	Woolstonian †	454.2 *
													Longvillian †		455.2 *
						Aurelucian						456.8 *	Longvillian †
						Aurelucian						Soudleyan †/Harnagian/Costonian		457.4 *
	Middle Ordovician	Darriwilian			Darriwilian	Guniu †/Hulo			Llanvirn		Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn			458.4
						Guniu †/Hulo					Abereiddian/Early Llanvirn			461.3 *
						Hunjiang †	Dawan †/Daobaowan/Ningkuo							466.3 *
		Dapingian			Dapingian									467.3
		Dapingian			Dapingian				Arenig		Fennian			468.4 *
	Early Ordovician	Floian			Yiyangian						Fennian			470
											Whitlandian			471.1 *
											Moridunian			474.3 *
		Tremadocian			Xinchangian				Tremadoc		Migneintian			477.7
							Lianghekou †				Migneintian			477.9 *
											Cressagian			480.8 *
											Cressagian			Mansian †	483.55 *
														Mansian †	485 *
Cambrian	Furongian	Stage 10												Merioneth	Dolgellian/Trempealeauan	Batyrbaian	Tavgian †	Ketyan †/Yurakian	485.4
		Stage 10													Festiniogian				489.2 *
		Jiangshanian																	489.5
																Aksaian			490.7 *
																Sakian			492.2 *
															Maentwrogian				493.1 *
		Paibian																	494
		Paibian																Ensyan †/Maduan/Nganasanian	494.7 *
	Miaolingian	Guzhangian						Series 3 †						St Davids		Ayusokkanian			497
		Guzhangian														Mayan/Menevian			499.5
		Drumian	500.5													Mayan/Menevian
		Wuliuan	Stage 5 †													Amgan/Solvan			504.5
	Series 2	Stage 4												Caerfai		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