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, 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
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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
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
Z.-X. Qiu and Z.-D. Qiu. 1995. Chronological sequence and subdivision of Chinese Neogene mammalian faunas. Palaeogeography, Palaeoclimatology, Palaeoecology 116(1-2):41-70 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			Mesozoic Subages		Permian-Jurassic of New Zealand		Neogene Mammal Ages of China	Permian of the Salt Range	Permian of Western Europe	Cretaceous Subepochs
Quaternary	Pleistocene	Late Pleistocene								Nihewanian				0.0117
		Chibanian												0.129
		Calabrian												0.774
		Gelasian												1.8
Neogene	Pliocene	Piacenzian	Tertiary †							Yushean				2.58
		Zanclean								Yushean				3.6
		Zanclean								Baodean				4.9
	Miocene	Messinian												5.333
		Tortonian												7.246
		Tortonian								Tunggurian				11.1
		Serravallian								Tunggurian				11.63
		Langhian								Shanwangian				13.82
		Burdigalian								Shanwangian				15.98
		Burdigalian								Xiejiaan				16.9
		Aquitanian								Xiejiaan				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							Senonian	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							Gallic	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							Neocomian	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				Late Tithonian	Middle Tithonian	Oteke	Puaroan					145
		Tithonian				Early Tithonian	Middle Tithonian							146.3 *
		Kimmeridgian				Late Kimmeridgian								149.2
						Late Kimmeridgian		Kawhia	Ohauan					150
						Early Kimmeridgian			Ohauan					152.2 *
						Early Kimmeridgian			Heterian					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				Late Callovian/Middle Callovian/Early Callovian			Temaikan					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
						Late Toarcian		Herangi	Ururoan					176
						Middle Toarcian								180.4 *
						Early Toarcian								182.9 *
		Pliensbachian				Late Pliensbachian/Early Pliensbachian								184.2
		Pliensbachian				Late Pliensbachian/Early Pliensbachian			Aratauran					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		Sevatian	Warepan	208.5
				Alaunian		213.2 *
				Lacian		216.7 *
					Otamitan	217
					Oretian	221
		Carnian		Tuvalian	Oretian	227
				Tuvalian	Gore	Kaihikuan		227.5
				Julian				233.4 *
	Middle Triassic	Ladinian		Longobardian				237
				Longobardian		Etalian		238
				Fassanian				239.7 *
		Anisian		Illyrian				242
				Pelsonian				243.8 *
				Bithynian				244.7 *
				Aegean				245.5 *
				Aegean		Malakovian		246
	Early Triassic	Olenekian		Spathian				247.2
				Smithian				248.9 *
				Smithian		Nelsonian		249
		Induan		Dienerian				251.2
				Griesbachian				251.4 *
				Griesbachian	DUrville	Makarewan		Kathwai	251.5 *
Permian	Lopingian	Changhsingian						Kathwai	251.902
									252.4 *
			Chhidru					252.9 *
						Waiitian		253.2
		Wuchiapingian				Waiitian		Longtanian †	Zechstein	254.14
						Puruhauan				254.2
			Kalabagh							255 *
			Wargal							256 *
	Guadalupian	Capitanian				Aparima		Flettian	Rotliegendes	259.51
		Wordian								264.28
										265.3 *
								Barettian		266
			Amb							266.1 *
		Roadian	Amb							266.9
		Roadian								270.7 *
	Cisuralian	Kungurian								273.01
		Kungurian						Mangapirian		276
		Artinskian						Mangapirian	Autunian	283.5
								Telfordian		285
										288.5
		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					382.7
	Middle Devonian	Eifelian					387.7
	Early Devonian	Emsian					393.3
		Pragian					407.6
		Lochkovian					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								485.4
		Jiangshanian								489.5
		Paibian								494
	Miaolingian	Guzhangian								Series 3 †			497
		Drumian											500.5
		Wuliuan			Stage 5 †								504.5
														509