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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 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		Silurian of the Baltic	Cambrian Epochs	Permian of Western Europe	Central Paratethys Stages	Ordovician of the Baltic
Neogene	Pliocene	Piacenzian	Tertiary †										2.58
	Pliocene	Zanclean											3.6
	Miocene	Messinian											5.333
		Tortonian									Pannonian		7.246
		Serravallian									Sarmatian		11.63
		Serravallian									Badenian		12.8 *
		Langhian											13.82
		Burdigalian											15.98
		Aquitanian											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							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							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							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						145
		Tithonian				Early Tithonian	Middle Tithonian						146.3 *
		Kimmeridgian				Late Kimmeridgian							149.2
		Kimmeridgian				Early Kimmeridgian							152.2 *
		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
		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
						Middle Toarcian							180.4 *
						Early Toarcian							182.9 *
		Pliensbachian				Late Pliensbachian/Early Pliensbachian							184.2
		Sinemurian				Late Sinemurian/Early Sinemurian							192.9
		Hettangian				Late Hettangian/Middle Hettangian/Early Hettangian							199.5
Triassic	Late Triassic	Rhaetian											201.4
		Norian				Sevatian							208.5
						Alaunian							213.2 *
						Lacian							216.7 *
		Carnian				Tuvalian							227
		Carnian				Julian							233.4 *
	Middle Triassic	Ladinian				Longobardian							237
		Ladinian				Fassanian							239.7 *
		Anisian				Illyrian							242
						Pelsonian							243.8 *
						Bithynian							244.7 *
						Aegean							245.5 *
	Early Triassic	Olenekian		Spathian	247.2
		Olenekian		Smithian	248.9 *
		Induan		Dienerian	251.2
		Induan		Griesbachian	251.4 *
Permian	Lopingian	Changhsingian			251.902
	Lopingian	Wuchiapingian			Longtanian †	Zechstein		254.14
	Guadalupian	Capitanian				Rotliegendes		259.51
		Wordian						264.28
		Roadian						266.9
	Cisuralian	Kungurian						273.01
		Artinskian				Autunian		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	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		Ohesaare					419.2
	Pridoli		Kaugetuma					421.7 *
	Ludlow	Ludfordian	Kuressaare					423
		Ludfordian	Paadla					423.4 *
		Gorstian	Paadla					425.6
	Wenlock	Homerian	Rootsikula					427.4
		Homerian	Jaagarahu					429.2 *
		Sheinwoodian	Jaagarahu					430.5
		Sheinwoodian	Jaani					431.8 *
	Llandovery	Telychian	Jaani					433.4
		Telychian	Adavere					434 *
		Aeronian	Adavere					438.5
		Aeronian	Raikkula					439.4 *
		Rhuddanian	Raikkula					440.8
		Rhuddanian	Juuru				441.4 *
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 *
Cambrian	Furongian	Stage 10						Pakerort	Late Cambrian			485.4
												486.3 *
							486.5
		Jiangshanian					489.5
		Paibian			494
	Miaolingian	Guzhangian			Series 3 †		Middle Cambrian		497
		Drumian							500.5
		Wuliuan							Stage 5 †			504.5
	Series 2	Stage 4							Early Cambrian			509
	Series 2	Stage 3										514
	Terreneuvian	Stage 2										521
	Terreneuvian	Fortunian				529
													538.8