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, 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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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

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			Cenozoic Subepochs	Ordovician of the Baltic				Ordovician of Australia	Silurian of North America		Cretaceous Subepochs	Devonian of Germany	Neogene Mammal Ages of China	Carboniferous of Western Europe
Quaternary	Pleistocene	Late Pleistocene				Late Pleistocene										Nihewanian		0.0117
		Chibanian				Middle Pleistocene												0.129
		Calabrian				Early Pleistocene												0.774
		Gelasian				Early Pleistocene												1.8
Neogene	Pliocene	Piacenzian	Tertiary †			Late Pliocene										Yushean		2.58
		Zanclean				Early Pliocene										Yushean		3.6
		Zanclean				Early Pliocene										Baodean		4.9
	Miocene	Messinian				Late Miocene												5.333
		Tortonian																7.246
		Tortonian														Tunggurian		11.1
		Serravallian				Middle Miocene										Tunggurian		11.63
		Langhian				Middle Miocene										Shanwangian		13.82
		Burdigalian				Early Miocene										Shanwangian		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
	Early Triassic	Induan																251.2
Permian	Lopingian	Changhsingian																251.902
	Lopingian	Wuchiapingian		Longtanian †														254.14
	Guadalupian	Capitanian																259.51
		Wordian																264.28
		Roadian																266.9
	Cisuralian	Kungurian																273.01
		Artinskian																283.5
		Sakmarian																290.1
		Asselian																293.52
		Asselian															Kuzel	297.7
Carboniferous	Pennsylvanian	Gzhelian			298.9												Kuzel
					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	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		Cayugan					419.2
	Pridoli		Niagaran					422.5 *
	Ludlow	Ludfordian						423
	Ludlow	Gorstian						425.6
	Wenlock	Homerian						Lockportian	427.4
	Wenlock	Sheinwoodian							430.5
	Llandovery	Telychian						Ontarian	433.4
		Aeronian							438.5
									Alexandrian	438.7 *
			Medinan					Clinton		440.1 *
										440.7 *
		Rhuddanian								440.8
Ordovician	Late Ordovician	Hirnantian	Harju						Porkuni	Bolindian	443.8
		Katian							Pirgu	Bolindian	445.2
									Pirgu	Eastonian	449 *
									Vormsi		449.6 *
									Nabala		Johvi †	450 *
			Viru						Rakvere			450.6 *
									Oandu	Gisbornian		452 *
		Sandbian							Keila		Idavere †	453
									Haljala			453.9
									Kukruse			456.4 *
									Uhaku		Aluoja †	457.5 *
	Middle Ordovician	Darriwilian							Uhaku	Darriwilian		458.4
				Lasnamagi					458.9 *
				Aseri					460.4 *
			Oeland	Kunda					462.9 *
				Kunda					Valaste †/Hunderum		464.3 *
				Volkhov							Langevoja †/Vaana/Saka	467.1 *
		Dapingian								Yapeenian		467.3
										Castlemainian		468.5 *
				Billingen						Castlemainian		469.3 *
	Early Ordovician	Floian								Chewtonian		470
									Latorp †	Chewtonian		470.1 *
										Bendigonian		471.8 *
										Lancefieldian		473.5 *
				Hunneberg								473.7 *
		Tremadocian		Hunneberg								477.7
				Varangu								481.3 *
				Pakerort								482.2 *
										Warendian		482.8 *
Cambrian	Furongian	Stage 10								Merioneth		Dolgellian/Trempealeauan	485.4
													486.3 *
													486.5
												Festiniogian	489.2 *
		Jiangshanian										Festiniogian	489.5
		Jiangshanian										Maentwrogian	493.1 *
		Paibian										Maentwrogian	494
	Miaolingian	Guzhangian								Series 3 †		St Davids		497
		Drumian												500.5
		Wuliuan												Stage 5 †	504.5
	Series 2	Stage 4												Caerfai	509
	Series 2	Stage 3													514
	Terreneuvian	Stage 2													521
	Terreneuvian	Fortunian													529
																		538.8