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
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
F. M. Gradstein, F. P. Agterberg, J. G. Ogg, J. Hardenbol, P. Van Veen, J. Thierry, and Z. Huang. 1995. A Triassic, Jurassic, and Cretaceous time scale. SEPM Special Publication 54 view
J. Palfy, P. L. Smith, and J. K. Mortensen. 2000. A U-Pb and 40Ar/39Ar time scale for the Jurassic. Canadian Journal of Earth Sciences 37(6):923-944 view
M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 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			Permian-Jurassic of New Zealand		Cambrian of China		Permian of North America		Mesozoic Subages		Cambrian of Britain		Central Paratethys Stages	Ordovician of Britain
Neogene	Pliocene	Piacenzian	Tertiary †																2.58
	Pliocene	Zanclean																	3.6
	Miocene	Messinian																	5.333
		Tortonian														Pannonian			7.246
		Serravallian														Sarmatian			11.63
		Serravallian														Badenian			12.8 *
		Langhian																	13.82
		Burdigalian																	15.98
		Aquitanian																	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										Late Maastrichtian/Early Maastrichtian							66
		Campanian										Late Campanian/Middle Campanian/Early Campanian							72.1
		Santonian										Late Santonian/Middle Santonian/Early Santonian							83.6
		Coniacian										Late Coniacian/Middle Coniacian/Early Coniacian							86.3
		Turonian										Late Turonian/Middle Turonian/Early Turonian							89.8
		Cenomanian										Late Cenomanian/Middle Cenomanian/Early Cenomanian							93.9
	Early Cretaceous	Albian										Late Albian							100.5
												Middle Albian							106.2 *
												Early Albian							109.9 *
		Aptian										Late Aptian							113
		Aptian										Early Aptian							119.5 *
		Barremian										Late Barremian/Early Barremian							121.4
		Hauterivian										Late Hauterivian/Early Hauterivian							125.77
		Valanginian										Late Valanginian/Early Valanginian							132.6
		Berriasian										Late Berriasian							139.8
												Middle Berriasian							140.6 *
												Early Berriasian							142.7 *
Jurassic	Late Jurassic	Tithonian				Oteke	Puaroan					Late Tithonian	Middle Tithonian						145
		Tithonian										Early Tithonian	Middle Tithonian						146.3 *
		Kimmeridgian										Late Kimmeridgian							149.2
						Kawhia	Ohauan					Late Kimmeridgian							150
							Ohauan					Early Kimmeridgian							152.2 *
							Heterian					Early Kimmeridgian							154.5
		Oxfordian										Late Oxfordian	Middle Oxfordian/Early Oxfordian						154.8
		Oxfordian											Middle Oxfordian/Early Oxfordian						157.9 *
	Middle Jurassic	Callovian										Late Callovian/Middle Callovian/Early Callovian							161.5
		Callovian					Temaikan					Late Callovian/Middle Callovian/Early Callovian							164.3
		Bathonian										Late Bathonian/Middle Bathonian/Early Bathonian							165.3
		Bajocian										Late Bajocian							168.2
		Bajocian										Early Bajocian							168.6 *
		Aalenian										Late Aalenian/Middle Aalenian/Early Aalenian							170.9
	Early Jurassic	Toarcian										Late Toarcian							174.7
						Herangi	Ururoan					Late Toarcian							176
												Middle Toarcian							180.4 *
												Early Toarcian							182.9 *
		Pliensbachian										Late Pliensbachian/Early Pliensbachian							184.2
		Pliensbachian					Aratauran					Late Pliensbachian/Early Pliensbachian							188.9
		Sinemurian										Late Sinemurian/Early Sinemurian							192.9
		Hettangian										Late Hettangian/Middle Hettangian/Early Hettangian							199.5
Triassic	Late Triassic	Rhaetian				Balfour	Otapirian												201.4
		Norian					Warepan					Sevatian							208.5
												Alaunian							213.2 *
												Lacian							216.7 *
							Otamitan												217
							Oretian												221
		Carnian					Oretian					Tuvalian							227
				Gore	Kaihikuan	227.5						Tuvalian
						Julian	233.4 *
	Middle Triassic	Ladinian				Longobardian	237
					Etalian	Longobardian	238
						Fassanian	239.7 *
		Anisian				Illyrian	242
						Pelsonian	243.8 *
						Bithynian	244.7 *
						Aegean	245.5 *
					Malakovian	Aegean	246
	Early Triassic	Olenekian				Spathian	247.2
						Smithian	248.9 *
					Nelsonian	Smithian	249
		Induan				Dienerian	251.2
						Griesbachian	251.4 *
				DUrville	Makarewan	Griesbachian	251.5
Permian	Lopingian	Changhsingian			Makarewan		251.902
		Changhsingian			Waiitian		253.2
		Wuchiapingian	Longtanian †		Waiitian		254.14
		Wuchiapingian	Longtanian †		Puruhauan		254.2
	Guadalupian	Capitanian		Aparima	Flettian		Capitanian	259.51
		Wordian			Flettian		Wordian	264.28
		Wordian			Barettian		Wordian	266
		Roadian					Roadian	266.9
	Cisuralian	Kungurian					Leonardian	Cathedralian	273.01
					Mangapirian			Cathedralian	276
								Hessian	281.9 *
		Artinskian							283.5
					Telfordian				285
					Telfordian		Wolfcampian	Lenoxian	286.1 *
									288.5
		Sakmarian							290.1
		Asselian						Nealian	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							Wocklum/Dasberg/Hemberg/Nehden	358.9
	Late Devonian	Frasnian							Adorf	372.2
	Middle Devonian	Givetian							Givetian	382.7
	Middle Devonian	Eifelian							Eifelian	387.7
	Early Devonian	Emsian							Emsian	393.3
		Pragian							Siegen	407.6
		Lochkovian							Gedinnine	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								Ashgill	Hirnantian	443.8
		Katian									Rawtheyan	445.2
											Cautleyan	448.9 *
											Pusgillian	449.3 *
										Caradoc	Streffordian	Onnian †	449.6 *
											Cheneyan		451.5 *
											Burrellian		452.7 *
		Sandbian											453
												Actonian †	453.2 *
												Marshbrookian †	Woolstonian †	454.2 *
												Longvillian †		455.2 *
											Aurelucian	Longvillian †		456.8 *
											Aurelucian	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
		Dapingian								Arenig	Fennian			468.4 *
	Early Ordovician	Floian									Fennian			470
											Whitlandian			471.1 *
											Moridunian			474.3 *
		Tremadocian								Tremadoc	Migneintian			477.7
										Tremadoc	Cressagian			480.8 *
														485 *
Cambrian	Furongian	Stage 10												Niuchehean	Taoyuanian †	Merioneth	Dolgellian/Trempealeauan	485.4
		Stage 10												Niuchehean			Festiniogian	489.2 *
		Jiangshanian				Jiangshanian								489.5			Festiniogian
		Jiangshanian				Jiangshanian								Maentwrogian			493.1 *
		Paibian				Paibian											494
		Paibian				Paibian									Waergangian †/Youshuanian		494.9 *
	Miaolingian	Guzhangian	Series 3 †			Guzhangian								Wangcunian †	St Davids		497
		Drumian				Drumian								Wangcunian †			500.5
		Wuliuan				Stage 5 †								Wuliuan/Taijangian				504.5
	Series 2	Stage 4												Duyunian	Caerfai			509
	Series 2	Stage 3												Nangaoian				514
	Terreneuvian	Stage 2												Meishucunian				521
		Fortunian												Meishucunian				529
		Fortunian												Jinnigian				530.7
																			538.8