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
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
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
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

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International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Neogene Mammal Ages of China	Cenozoic Subepochs	Cambrian Epochs	Cambrian of Siberia			Ordovician of North America					Ordovician of the Baltic
Quaternary	Pleistocene	Late Pleistocene				Nihewanian	Late Pleistocene											0.0117
		Chibanian					Middle Pleistocene											0.129
		Calabrian					Early Pleistocene											0.774
		Gelasian					Early Pleistocene											1.8
Neogene	Pliocene	Piacenzian	Tertiary †			Yushean	Late Pliocene											2.58
		Zanclean				Yushean	Early Pliocene											3.6
		Zanclean				Baodean	Early Pliocene											4.9
	Miocene	Messinian					Late Miocene											5.333
		Tortonian																7.246
		Tortonian				Tunggurian												11.1
		Serravallian				Tunggurian	Middle Miocene											11.63
		Langhian				Shanwangian	Middle Miocene											13.82
		Burdigalian				Shanwangian	Early Miocene											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			Richmondian	449.6 *
			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
		Guzhangian							Mayan/Menevian							499.5
		Drumian							Mayan/Menevian							500.5
		Wuliuan							Stage 5 †							Amgan/Solvan	504.5
	Series 2	Stage 4							Early Cambrian							Amgan/Solvan	509
										Toyonian						Lenian †	510 *
										Botomian							512.5 *
		Stage 3								Botomian							514
		Stage 3								Atdabanian							515.6 *
	Terreneuvian	Stage 2								Tommotian							521
		Stage 2								Nemakit-Daldynian							525.5
		Fortunian								Nemakit-Daldynian						Manykaian †	529
																		538.8