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
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, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
M. Kretzoi. 1942. Necroteuthis n. g. (Ceph. Dibr., Necroteuthidae N. F.) aus dem Oligozän von Budapest und das system der Dibranchiata. Földtani Közlöny 72:125-238 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			Devonian of Czechoslovakia	Central Paratethys Stages	Cambrian of Kazakhstan	Cenozoic Subepochs	Carboniferous of Western Europe		Cambrian of West Avalonia	Ordovician of North America
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 †						Late Pliocene										2.58
	Pliocene	Zanclean							Early Pliocene										3.6
	Miocene	Messinian							Late Miocene										5.333
		Tortonian					Pannonian		Late Miocene										7.246
		Serravallian					Sarmatian		Middle Miocene										11.63
		Serravallian					Badenian												12.8 *
		Langhian																	13.82
		Burdigalian							Early Miocene										15.98
		Aquitanian							Early Miocene										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																	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																	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								Kuzel									298.9
										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			358.9
	Late Devonian	Frasnian			372.2
	Middle Devonian	Givetian			Srbsko		382.7
	Middle Devonian	Eifelian			Chotec		387.7
	Early Devonian	Emsian			Daleje/Zlichovian		393.3
		Pragian			Pragian		407.6
		Lochkovian			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					Cincinnatian		Gamachian			443.8
		Katian							Gamachian			445.2
									Richmondian			446 *
									Maysvillian			Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
									Edenian				450.4 *
							Mohawkian		Chatfieldian				451.1 *
		Sandbian							Chatfieldian				453
									Turinian				453.7 *
							Whiterockian					Canadian †	Chazyan †/Marmor	457 *
	Middle Ordovician	Darriwilian												458.4
		Dapingian												467.3
		Dapingian							Rangerian					469.1 *
	Early Ordovician	Floian		Ibexian			Blackhillsian		Jeffersonian †				Cassinian †	470
		Floian					Tulean							473.9 *
		Tremadocian					Tulean							Ungurian	477.7
							Stairsian								480.3 *
							Skullrockian						Demingian †		482 *
Cambrian	Furongian	Stage 10					Skullrockian		Batyrbaian						485.4
		Stage 10													487.5
		Jiangshanian													489.5
									Aksaian						490.7 *
									Sakian						492.2 *
		Paibian							Sakian						494
	Miaolingian	Guzhangian							Series 3 †						Ayusokkanian	497
															Ayusokkanian	Arcadian	498.4
																	499.5
		Drumian													Zhanaarykian		500.5
		Drumian													Tuesaian		503
		Wuliuan													Tuesaian		Stage 5 †	504.5
		Wuliuan															Stage 5 †	505.3
	Series 2	Stage 4															Branchian	509
															Toyonian			510 *
															Botomian			512.5 *
		Stage 3													Botomian			514
															Atdabanian			515.6 *
															Atdabanian		Placentian	517.1
	Terreneuvian	Stage 2													Tommotian			521
		Stage 2																525.5
		Fortunian																529
																			538.8