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. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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
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
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. 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
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

Show more time

Show linear time

International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Cenozoic Subepochs	Cambrian of West Avalonia	Central Paratethys Stages	Neogene Mammal Ages of China	Cambrian Epochs	Cambrian of Siberia			Ordovician of North America
Quaternary	Pleistocene	Late Pleistocene				Late Pleistocene			Nihewanian										0.0117
		Chibanian				Middle Pleistocene													0.129
		Calabrian				Early Pleistocene													0.774
		Gelasian				Early Pleistocene													1.8
Neogene	Pliocene	Piacenzian	Tertiary †			Late Pliocene			Yushean										2.58
		Zanclean				Early Pliocene			Yushean										3.6
		Zanclean				Early Pliocene			Baodean										4.9
	Miocene	Messinian				Late Miocene													5.333
		Tortonian						Pannonian											7.246
		Tortonian						Pannonian	Tunggurian										11.1
		Serravallian				Middle Miocene		Sarmatian											11.63
		Serravallian						Badenian											12.8 *
		Langhian							Shanwangian										13.82
		Burdigalian				Early Miocene			Shanwangian										15.98
		Burdigalian							Xiejiaan										16.9
		Aquitanian							Xiejiaan										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
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				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			Cincinnatian		Gamachian	Harju	Porkuni	443.8
		Katian					Gamachian		Pirgu	445.2
							Richmondian		Pirgu	446 *
			Vormsi			449.6 *	Richmondian
			Vormsi			Maysvillian	Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian		449.8 *
			Nabala			Maysvillian			Johvi †	450 *
			Nabala			Edenian				450.4 *
			Viru			Edenian		Rakvere		450.6 *
					Mohawkian	Chatfieldian		Rakvere		451.1 *
								Oandu		452 *
		Sandbian						Keila	Idavere †	453
						Turinian		Keila		453.7 *
								Haljala		453.9
								Kukruse		456.4 *
					Whiterockian		Canadian †	Kukruse		Chazyan †/Marmor	457 *
								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										467.3
						Rangerian						469.1 *
						Rangerian		Billingen				469.3 *
	Early Ordovician	Floian			Ibexian	Blackhillsian				Jeffersonian †		Cassinian †	470
									Latorp †				470.1 *
								Hunneberg					473.7 *
						Tulean							473.9 *
		Tremadocian				Tulean							477.7
						Stairsian							480.3 *
						Stairsian		Varangu					481.3 *
						Skullrockian		Varangu				Demingian †	482 *
								Pakerort					482.2 *
													Mansian †	483.55 *
Cambrian	Furongian	Stage 10		Late Cambrian			Batyrbaian		Tavgian †	Ketyan †/Yurakian					485.4
															486.3 *
															486.5
															487.5
		Jiangshanian													489.5
							Aksaian								490.7 *
							Sakian								492.2 *
		Paibian													494
		Paibian								Ensyan †/Maduan/Nganasanian					494.7 *
	Miaolingian	Guzhangian		Series 3 †			Middle Cambrian		Ayusokkanian							497
									Ayusokkanian							Arcadian	498.4
									Mayan/Menevian								499.5
		Drumian							Mayan/Menevian								500.5
		Wuliuan							Stage 5 †								Amgan/Solvan	504.5
	Series 2	Stage 4							Branchian							Early Cambrian	Amgan/Solvan	509
										Toyonian							Lenian †	510 *
										Botomian								512.5 *
		Stage 3								Botomian								514
										Atdabanian								515.6 *
									Placentian	Atdabanian								517.1
	Terreneuvian	Stage 2								Tommotian								521
		Stage 2								Nemakit-Daldynian								525.5
		Fortunian								Nemakit-Daldynian							Manykaian †	529
																			538.8