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. F. Steininger, W. A. Berggren, D. V. Kent, R. L. Bernor, S. Sen and J. Agusti. 1996. Circum-Mediterranean Neogene (Miocene and Pliocene) marine-continental chronologic correlations of European mammal units. The Evolution of Western Eurasian Neogene Mammal Faunas (eds. R. L. Bernor, V. Fahlbusch, and H.-W. Mittmann) 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
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
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
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

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			Carboniferous Subepochs	European Faunal Units	Carboniferous of China	Ordovician of the Baltic			Cambrian of Australia	Silurian of North America			Central Paratethys Stages	Mesozoic Subages		Cenozoic Subepochs
Quaternary	Pleistocene	Late Pleistocene																	Late Pleistocene	0.0117
		Chibanian																	Middle Pleistocene	0.129
		Calabrian																	Early Pleistocene	0.774
		Gelasian																	Early Pleistocene	1.8
Neogene	Pliocene	Piacenzian	Tertiary †				Villanyian												Late Pliocene	2.58
		Piacenzian					Ruscinian												Late Pliocene	3.1 *
		Zanclean					Ruscinian												Early Pliocene	3.6
	Miocene	Messinian					Turolian												Late Miocene	5.333
		Tortonian					Turolian									Pannonian				7.246
		Tortonian					Vallesian									Pannonian				8.7
		Serravallian					Astaracian									Sarmatian			Middle Miocene	11.63
		Serravallian														Badenian				12.8 *
		Langhian																		13.82
		Burdigalian					Orleanian												Early Miocene	15.98
		Burdigalian					Agenian													20
		Aquitanian					Agenian													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															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 †	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
Carboniferous	Pennsylvanian	Gzhelian				Late Pennsylvanian	298.9
		Gzhelian					Xiaodushanian	300 *
		Kasimovian					Xiaodushanian	303.7
		Kasimovian					Dalaun	305.8 *
		Moscovian				Middle Pennsylvanian		307
		Bashkirian	Early Pennsylvanian			315.2
						Huashibanian	318.5 *
						Lousuan	321.2 *
	Mississippian	Serpukhovian	Late Mississippian			Dewunian	323.2
		Serpukhovian	Late Mississippian			Shangsian	330.8 *
		Visean	Middle Mississippian			Shangsian	330.9
		Visean	Middle Mississippian			Jiusian	335 *
		Tournaisian	Early Mississippian			Tangbagouan	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						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
											Chewtonian	Latorp †		470.1 *
											Bendigonian			471.8 *
				Lancefieldian							473.5 *
									Hunneberg		473.7 *
		Tremadocian			477.7				Hunneberg
					Varangu				481.3 *
					Pakerort				482.2 *
				Warendian					482.8 *
Cambrian	Furongian	Stage 10							Datsonian			485.4
												486.3 *
												486.5
									Payntonian			486.8 *
		Jiangshanian							Iverian			489.5
		Paibian							Idamean			494
	Miaolingian	Guzhangian							Series 3 †			Mindyallan		497
		Guzhangian										Boomerangian		499
		Drumian										Undillan		500.5
		Drumian										Floran		503
		Wuliuan										Stage 5 †		Templetonian	504.5
		Wuliuan										Stage 5 †		Ordian	507.8 *
	Series 2	Stage 4												Ordian	509
																				510.8 *