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, 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
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
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
M. Freudenthal. 2006. Mammal Paleogene zones. personal communication 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

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			Ordovician of China			Ordovician of the Baltic				Ammonite Chrons of North America			Cambrian of China		Devonian of France	Cambrian of Siberia			Mammal Paleogene Zones		Cretaceous-Cenozoic of New Zealand
Quaternary	Holocene	Meghalayan																						Wanganui	Haweran	0
		Northgrippian																								0.0042
		Greenlandian																								0.0082
	Pleistocene	Late Pleistocene																								0.0117
		Chibanian																								0.129
		Chibanian																							Castlecliffian	0.34
		Calabrian																							Castlecliffian	0.774
		Calabrian																							Nukumaruan	1.63
		Gelasian																							Nukumaruan	1.8
		Gelasian																							Mangapanian	2.4
Neogene	Pliocene	Piacenzian	Tertiary †																						Mangapanian	2.58
		Piacenzian																							Waipipian	3
		Zanclean																							Waipipian	3.6
		Zanclean																							Opoitian	3.7
	Miocene	Messinian																						Taranaki	Kapitean	5.333
		Messinian																							Tongaporutuan	7.2
		Tortonian																							Tongaporutuan	7.246
		Tortonian																						Southland	Waiauan	11.04
		Serravallian																							Waiauan	11.63
		Serravallian																							Lillburnian	13.05
		Langhian																							Lillburnian	13.82
																									Clifdenian	15.1
																								Pareora	Altonian	15.9
		Burdigalian																							Altonian	15.98
		Burdigalian																							Otaian	18.7
		Aquitanian																							Otaian	20.44
		Aquitanian																						Landon	Waitakian	21.7
Paleogene	Oligocene	Chattian																				MP 30/MP 29/MP 28/MP 27/MP 26	MP 25		Waitakian	23.03
																									Duntroonian	25.2
																									Whaingaroan	27.3
		Rupelian																				MP 24/MP 23/MP 22/MP 21				27.82
	Eocene	Priabonian																				MP 20/MP 19/MP 18/MP 17B/MP 17A				33.9
																								Arnold	Runangan	34.6
																									Kaiatan	36.7
		Bartonian																				MP 16			Kaiatan	37.71
		Bartonian																				MP 16			Bortonian	39.1
		Lutetian																				MP 15/MP 14/MP 13/MP 12/MP 11			Bortonian	41.2
																								Dannevirke	Porangan	42.6
																									Heretaungan	45.7
		Ypresian																				MP 10/MP 8 + 9/MP 7			Heretaungan	47.8
																									Mangaorapan	48.9
																									Waipawan	52
	Paleocene	Thanetian																				MP 6	MP 1 - 5		Teurian	56
		Selandian																								59.2
		Danian																								61.6
Cretaceous	Late Cretaceous	Maastrichtian																						Mata	Haumurian	66
		Campanian																							Haumurian	72.1
		Santonian																							Piripauan	83.6
		Santonian																						Raukumara	Teratan	86.1
		Coniacian																								86.3
		Turonian																								89.8
																									Mangaotanean	90.5
																									Arowhanan	93.7
		Cenomanian																							Arowhanan	93.9
																								Clarence	Ngaterian	95.2
																									Motuan	99.5
	Early Cretaceous	Albian																							Motuan	100.5
																									Urutawan	103.3
																								Taitai	Korangan	108.4
		Aptian																							Korangan	113
		Aptian																								117.5
		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			Epizigzagiceras	168.2
		Bajocian			Rotundum/Oblatum/Kirschneri/Crassicostatus/Widebayense	168.4
		Aalenian			Howelli/Scissum/Westermanni	170.9
	Early Jurassic	Toarcian			Yakounensis/Hillebrandti/Crassicosta	174.7
					Planulata	179.3 *
					Planulata	Arnioceras arnouldi	179.8 *
					Kanense		181.3 *
					Carlottense		182.3 *
					Kunae		183.5 *
		Pliensbachian			Kunae		184.2
					Freboldi		185.1 *
					Whiteavesi/Imlayi		Tetraspidoceras	186.2 *
							Tetraspidoceras	189.2 *
					Plesechioceras harbledownense/Asteroceras varians/Coroniceras		Canadensis	190.3 *
		Sinemurian						192.9
					Pseudaetomoceras	Psiloceras		196.4 *
					Franziceras/Euphyllites			196.5 *
		Hettangian			Franziceras/Euphyllites			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	Famennian						358.9
	Late Devonian	Frasnian	Frasnian						372.2
	Middle Devonian	Givetian	Givetian						382.7
	Middle Devonian	Eifelian	Couvinien						387.7
	Early Devonian	Emsian							393.3
		Pragian							407.6
		Pragian	Coblencien						408.2 *
		Lochkovian	Gedinnine						410.8
Silurian	Pridoli								419.2
	Ludlow	Ludfordian							423
	Ludlow	Gorstian							425.6
	Wenlock	Homerian							Gleedonian	427.4
		Homerian							Whitwellian	429.7 *
		Sheinwoodian								430.5
	Llandovery	Telychian								433.4
		Aeronian								438.5
		Rhuddanian								440.8
Ordovician	Late Ordovician	Hirnantian								Hirnantian	Xiaoxita †/Shikou	Wufeng †	Harju	Porkuni	443.8
		Katian		Chientangkiangian						Pirgu		Wufeng †		445.2
				Neichianshanian/Hanjiang						Pirgu				449.5
										Vormsi				449.6 *
										Nabala				Johvi †	450 *
										Viru			Rakvere		450.6 *
													Oandu		452 *
		Sandbian											Keila	Idavere †	453
													Haljala		453.9
													Kukruse		456.4 *
													Uhaku	Aluoja †	457.5 *
	Middle Ordovician	Darriwilian		Darriwilian							Guniu †/Hulo		Uhaku		458.4
													Lasnamagi		458.9 *
													Aseri		460.4 *
										Oeland			Kunda		462.9 *
														Valaste †/Hunderum	464.3 *
											Hunjiang †	Dawan †/Daobaowan/Ningkuo			466.3 *
													Volkhov		Langevoja †/Vaana/Saka	467.1 *
		Dapingian		Dapingian									Volkhov			467.3
		Dapingian		Dapingian									Billingen			469.3 *
	Early Ordovician	Floian		Yiyangian												470
														Latorp †		470.1 *
							Hunneberg						473.7 *
		Tremadocian		Xinchangian									477.7
					Lianghekou †	477.9 *
						Varangu	481.3 *
						Pakerort	482.2 *
							Mansian †					483.55 *
Cambrian	Furongian	Stage 10										Niuchehean	Taoyuanian †	Batyrbaian		Tavgian †	Ketyan †/Yurakian	Merioneth	Dolgellian/Trempealeauan	485.4
																				486.3 *
																				486.5
																			Festiniogian	489.2 *
		Jiangshanian										Jiangshanian								489.5
								Aksaian						490.7 *
								Sakian						492.2 *
														Maentwrogian					493.1 *
		Paibian										Paibian							494
																	Ensyan †/Maduan/Nganasanian		494.7 *
													Waergangian †/Youshuanian				Ensyan †/Maduan/Nganasanian		494.9 *
	Miaolingian	Guzhangian						Series 3 †				Guzhangian	Wangcunian †	Ayusokkanian				St Davids		497
		Guzhangian										Guzhangian		Mayan/Menevian						499.5
		Drumian										Drumian		Mayan/Menevian						500.5
		Wuliuan										Stage 5 †	Wuliuan/Taijangian							Amgan/Solvan	504.5
	Series 2	Stage 4											Duyunian					Caerfai		Amgan/Solvan	509
																Toyonian				Lenian †	510 *
																Botomian					512.5 *
		Stage 3											Nangaoian			Botomian					514
		Stage 3											Nangaoian			Atdabanian					515.6 *
	Terreneuvian	Stage 2											Meishucunian			Tommotian					521
		Stage 2														Nemakit-Daldynian					525.5
		Fortunian																		Manykaian †	529
		Fortunian											Jinnigian							Manykaian †	530.7
																										538.8