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
J. I. Raine, A. G. Beu, A. F. Boyes, H. J. Campbell, R. A. Cooper, J. S. Crampton, M. P. Crundwell, C. J. Hollis, and H. E. G. Morgans. 2015. Revised Calibration of the New Zealand Geological Timescale: NZGT2015/1. GNS Science Report 2012(39) 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
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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			Permian-Jurassic of New Zealand		Silurian of the Baltic	Obsolete Carboniferous Ages of China	Cambrian Epochs	Cambrian of Siberia			Ordovician of the Baltic		Devonian Subages	Ordovician of North America
Neogene	Pliocene	Piacenzian	Tertiary †																2.58
	Pliocene	Zanclean																	3.6
	Miocene	Messinian																	5.333
		Tortonian																	7.246
		Serravallian																	11.63
		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																	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				Oteke	Puaroan												145
		Kimmeridgian				Oteke	Puaroan												149.2
						Kawhia	Ohauan												150
							Heterian												154.5
		Oxfordian																	154.8
	Middle Jurassic	Callovian																	161.5
		Callovian					Temaikan												164.3
		Bathonian																	165.3
		Bajocian																	168.2
		Aalenian																	170.9
	Early Jurassic	Toarcian																	174.7
		Toarcian				Herangi	Ururoan												176
		Pliensbachian					Ururoan												184.2
		Pliensbachian					Aratauran												188.9
		Sinemurian																	192.9
		Hettangian																	199.5
Triassic	Late Triassic	Rhaetian				Balfour	Otapirian												201.4
		Norian					Warepan												208.5
							Otamitan												217
							Oretian												221
		Carnian					Oretian												227
		Carnian				Gore	Kaihikuan												227.5
	Middle Triassic	Ladinian					Kaihikuan												237
		Ladinian					Etalian												238
		Anisian					Etalian												242
		Anisian					Malakovian												246
	Early Triassic	Olenekian					Malakovian												247.2
		Olenekian					Nelsonian												249
		Induan					Nelsonian												251.2
		Induan				DUrville	Makarewan												251.5
Permian	Lopingian	Changhsingian					Makarewan												251.902
		Changhsingian					Waiitian												253.2
		Wuchiapingian		Longtanian †			Waiitian												254.14
		Wuchiapingian		Longtanian †			Puruhauan												254.2
	Guadalupian	Capitanian				Aparima	Flettian												259.51
		Wordian			264.28		Flettian
		Wordian			Barettian		266
		Roadian					266.9
	Cisuralian	Kungurian					273.01
		Kungurian			Mangapirian		276
		Artinskian			Mangapirian		283.5
					Telfordian		285
							288.5
		Sakmarian					290.1
		Asselian					293.52
Carboniferous	Pennsylvanian	Gzhelian					Mapingian †	298.9
		Kasimovian					Mapingian †	303.7
		Kasimovian						305.9
		Moscovian						307
		Bashkirian						315.2
	Mississippian	Serpukhovian						323.2
		Visean						330.9
		Tournaisian	346.7
Devonian	Late Devonian	Famennian	Late Famennian					358.9
			Middle Famennian					365.3 *
			Early Famennian					368.5 *
		Frasnian	Late Frasnian					372.2
			Middle Frasnian					375.4 *
			Early Frasnian					379.3 *
	Middle Devonian	Givetian	Late Givetian					382.7
			Middle Givetian					383.7 *
			Early Givetian					385.9 *
		Eifelian	Late Eifelian					387.7
		Eifelian	Early Eifelian					390.3 *
	Early Devonian	Emsian	Late Emsian					393.3
		Emsian	Early Emsian					398.3 *
		Pragian	Pragian					407.6
		Lochkovian	Late Lochkovian					410.8
			Middle Lochkovian					412.8 *
			Early Lochkovian					415.6 *
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	Cincinnatian	Gamachian	443.8
		Katian								Pirgu		Gamachian	445.2
										Pirgu		Richmondian	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	Rakvere		Edenian			450.6 *
										Rakvere	Mohawkian	Chatfieldian			451.1 *
										Oandu					452 *
		Sandbian								Keila				Idavere †	453
										Keila		Turinian			453.7 *
										Haljala					453.9
				Kukruse						456.4 *
				Kukruse						Whiterockian		Canadian †	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 *
					Billingen				Rangerian		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 *
					Varangu					Stairsian				481.3 *
					Varangu					Skullrockian			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