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

Show more time

Show linear time

International Chronostratigraphic Timescale			Obsolete Names for ICS Units			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				427.4
	Wenlock	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