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
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			Silurian Ages of Europe	Devonian of France	Ordovician of Britain				Permian Subages of Germany	Neogene Mammal Ages of China	Ordovician of the Baltic
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														66
		Campanian														72.1
		Santonian														83.6
		Coniacian														86.3
		Turonian														89.8
		Cenomanian														93.9
	Early Cretaceous	Albian														100.5
		Aptian														113
		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										Buntsandstein				251.902
	Lopingian	Wuchiapingian		Longtanian †								Buntsandstein				254.14
	Guadalupian	Capitanian										Ohre/Aller				259.51
		Wordian										Leine				264.28
		Roadian														266.9
	Cisuralian	Kungurian														273.01
		Artinskian														283.5
		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			Famennian	358.9
	Late Devonian	Frasnian			Frasnian	372.2
	Middle Devonian	Givetian			Givetian	382.7
	Middle Devonian	Eifelian			Couvinien	387.7
	Early Devonian	Emsian				393.3
		Pragian				407.6
		Pragian			Coblencien	408.2 *
		Lochkovian			Gedinnine	410.8
Silurian	Pridoli					419.2
	Ludlow	Ludfordian				423
	Ludlow	Gorstian				425.6
	Wenlock	Homerian				Gleedonian	427.4
		Homerian				Whitwellian	429.7 *
		Sheinwoodian					430.5
	Llandovery	Telychian					433.4
		Aeronian					438.5
		Rhuddanian					440.8
Ordovician	Late Ordovician	Hirnantian					Ashgill	Hirnantian	Harju	Porkuni	443.8
		Katian	Rawtheyan					Pirgu		445.2
			Cautleyan							448.9 *
			Pusgillian							449.3 *
			Caradoc				Streffordian	Onnian †		Vormsi	449.6 *
										Nabala	Johvi †		450 *
									Viru	Rakvere			450.6 *
							Cheneyan			Rakvere			451.5 *
							Cheneyan			Oandu			452 *
							Burrellian			Oandu			452.7 *
		Sandbian								Keila	Idavere †		453
								Actonian †		Keila			453.2 *
								Actonian †		Haljala			453.9
								Marshbrookian †					Woolstonian †	454.2 *
								Longvillian †						455.2 *
										Kukruse				456.4 *
							Aurelucian							456.8 *
								Soudleyan †/Harnagian/Costonian						457.4 *
								Soudleyan †/Harnagian/Costonian		Uhaku	Aluoja †			457.5 *
	Middle Ordovician	Darriwilian	Llanvirn				Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn			Uhaku				458.4
										Lasnamagi				458.9 *
										Aseri				460.4 *
							Abereiddian/Early Llanvirn			Aseri				461.3 *
									Oeland	Kunda				462.9 *
										Kunda	Valaste †/Hunderum			464.3 *
										Volkhov				Langevoja †/Vaana/Saka	467.1 *
		Dapingian													467.3
			Arenig				Fennian								468.4 *
										Billingen					469.3 *
	Early Ordovician	Floian													470
											Latorp †				470.1 *
							Whitlandian								471.1 *
							Whitlandian			Hunneberg					473.7 *
				Moridunian			474.3 *
		Tremadocian	Tremadoc	Migneintian			477.7
				Cressagian			480.8 *
							Varangu			481.3 *
							Pakerort			482.2 *
										485 *
Cambrian	Furongian	Stage 10									485.4
											486.3 *
											486.5
		Jiangshanian									489.5
		Paibian									494
	Miaolingian	Guzhangian									Series 3 †	497
		Drumian										500.5
		Wuliuan										Stage 5 †			504.5
																509