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
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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. 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			Neogene Mammal Ages of China	Permian Subages of Germany	Cenozoic Subepochs	Cambrian Epochs	Permian of the Salt Range	Cambrian of Britain		Cambrian of Siberia			Cretaceous Subepochs	Carboniferous Subepochs
Quaternary	Pleistocene	Late Pleistocene				Nihewanian		Late Pleistocene										0.0117
		Chibanian						Middle Pleistocene										0.129
		Calabrian						Early Pleistocene										0.774
		Gelasian						Early Pleistocene										1.8
Neogene	Pliocene	Piacenzian	Tertiary †			Yushean		Late Pliocene										2.58
		Zanclean				Yushean		Early Pliocene										3.6
		Zanclean				Baodean		Early Pliocene										4.9
	Miocene	Messinian						Late Miocene										5.333
		Tortonian																7.246
		Tortonian				Tunggurian												11.1
		Serravallian				Tunggurian		Middle Miocene										11.63
		Langhian				Shanwangian		Middle Miocene										13.82
		Burdigalian				Shanwangian		Early Miocene										15.98
		Burdigalian				Xiejiaan												16.9
		Aquitanian				Xiejiaan												20.44
Paleogene	Oligocene	Chattian						Late Oligocene										23.03
	Oligocene	Rupelian						Early Oligocene										27.82
	Eocene	Priabonian						Late Eocene										33.9
		Bartonian						Middle Eocene										37.71
		Lutetian						Middle Eocene										41.2
		Ypresian						Early Eocene										47.8
	Paleocene	Thanetian						Late Paleocene										56
		Selandian						Middle Paleocene										59.2
		Danian						Early Paleocene										61.6
Cretaceous	Late Cretaceous	Maastrichtian														Senonian		66
		Campanian																72.1
		Santonian																83.6
		Coniacian																86.3
		Turonian																89.8
		Cenomanian																93.9
	Early Cretaceous	Albian														Gallic		100.5
		Aptian																113
		Barremian																121.4
		Hauterivian														Neocomian		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
		Induan																251.2
		Induan								Kathwai								251.5 *
Permian	Lopingian	Changhsingian					Buntsandstein			Kathwai								251.902
																		252.4 *
										Chhidru								252.9 *
		Wuchiapingian		Longtanian †						Chhidru								254.14
										Kalabagh								255 *
										Wargal								256 *
	Guadalupian	Capitanian					Ohre/Aller											259.51
		Wordian					Leine											264.28
																		265.3 *
					Amb				266.1 *
		Roadian			Amb				266.9
		Roadian							270.7 *
	Cisuralian	Kungurian							273.01
		Artinskian							283.5
		Sakmarian							290.1
		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								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	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 *
											Mansian †	483.55 *
Cambrian	Furongian	Stage 10						Late Cambrian			Merioneth	Dolgellian/Trempealeauan	Batyrbaian	Tavgian †	Ketyan †/Yurakian		485.4
																	486.3 *
																	486.5
												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 †				Middle Cambrian			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					Amgan/Solvan	Early Cambrian			Caerfai		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