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. 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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
A. G. Sennikov and V. K. Golubev. 2006. Vyazniki Biotic Assemblage of the Terminal Permian. Paleontological Journal 40(suppl. 4):S475-S481 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			Ordovician of the Baltic				Permian-Jurassic of New Zealand		Cambrian of North America		Carbo-Permian of the Russian Platform	Cambrian of Kazakhstan	Permo-Triassic Subages of Eastern Europe	Silurian of North America			Cambrian of West Avalonia	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					Vokhmian								247.2
		Olenekian									Nelsonian													249
		Induan									Nelsonian													251.2
		Induan								DUrville	Makarewan													251.5
Permian	Lopingian	Changhsingian									Makarewan			Melekhovian										251.902
		Changhsingian									Waiitian													253.2
		Wuchiapingian		Longtanian †							Waiitian					Late Vyatkian/Early Vyatkian								254.14
		Wuchiapingian		Longtanian †							Puruhauan					Late Vyatkian/Early Vyatkian								254.2
	Guadalupian	Capitanian								Aparima	Flettian					Late Severodvinian/Early Severodvinian								259.51
		Wordian			Late Urzhumian/Early Urzhumian	264.28
						Noginskian	264.9 *
							Barettian	266
		Roadian			Late Kazanian/Early Kazanian			266.9
	Cisuralian	Kungurian						273.01
							Mangapirian	276
						Pavlovoposadian		276.8 *
		Artinskian						283.5
							Telfordian	285
						Rusavkinian	Telfordian	287.6 *
									288.5
		Sakmarian							290.1
		Asselian							293.52
Carboniferous	Pennsylvanian	Gzhelian							298.9
		Kasimovian				Dorogomilovian			303.7
						Khamovnikian			304.8
						Krevyakinian			305.8 *
		Moscovian	Myachkovian			307
			Podolskian			308.9 *
			Kashirian			311.4 *
			Vereian			313.8
			Melekessian			314.8
		Bashkirian	Melekessian			315.2
			Cheremshanian			316.9 *
			Prikamian			318.6 *
			Severokeltmian			319.9 *
			Krasnopolyanian			321.2 *
			Voznesenian			321.9 *
	Mississippian	Serpukhovian	Zapaltjubian			323.2
			Protvian			324.4 *
			Steshevian			326.8 *
			Tarusian			329 *
		Visean	Venevian			330.9
			Mikhailovian			331.9 *
			Aleksinian			333.7 *
			Tulian			335.8 *
			Bobrikian			339.9 *
			Radaevkian			343.4 *
		Tournaisian	Kosvian			346.7
			Kizelian			350.7 *
			Cherepetian			351.9 *
			Karakubian			354.4 *
			Upinian			356.3 *
			Malevkian			357.6 *
			Gumerovian			358 *
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					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		Harju		Porkuni						Cincinnatian	Gamachian	443.8
		Katian				Pirgu							Gamachian	445.2
						Pirgu							Richmondian	446 *
						Vormsi							Richmondian	449.6 *
					Maysvillian	Vormsi							Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
					Maysvillian	Nabala								Johvi †	450 *
					Edenian	Nabala									450.4 *
				Viru	Edenian	Rakvere									450.6 *
					Mohawkian	Rakvere						Chatfieldian			451.1 *
						Oandu									452 *
		Sandbian				Keila	Idavere †	453
						Keila		Turinian				453.7 *
						Haljala						453.9
						Kukruse						456.4 *
					Whiterockian	Kukruse						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								Ungurian	477.7
								Stairsian									480.3 *
						Varangu		Stairsian									481.3 *
						Varangu		Skullrockian							Demingian †		482 *
						Pakerort									Demingian †		482.2 *
Cambrian	Furongian	Stage 10				Pakerort						Franconian †/Dresbachian/Millardan	Batyrbaian					Merioneth	Dolgellian/Trempealeauan	485.4
																				486.3 *
																				486.5
					Sunwaptan																487.5
																			Festiniogian		489.2 *
		Jiangshanian																			489.5
													Aksaian								490.7 *
													Sakian								492.2 *
					Steptoean																493 *
																			Maentwrogian		493.1 *
		Paibian																	Maentwrogian		494
	Miaolingian	Guzhangian	Series 3 †		Marjumian							Albertian †	Ayusokkanian					St Davids			497
													Ayusokkanian								Arcadian	498.4
																						499.5
		Drumian											Zhanaarykian									500.5
		Drumian											Tuesaian									503
		Wuliuan			Stage 5 †								Tuesaian									Topazan	504.5
																						Topazan	505.3
																						Delamaran	506.5
	Series 2	Stage 4										Waucoban †						Branchian			Caerfai		509
													Toyonian										510 *
													Toyonian									Dyeran	511 *
													Botomian										512.5 *
		Stage 3																					514
																						Montezuman	514.8 *
													Atdabanian										515.6 *
																		Placentian					517.1
																						Begadean	519.9 *
	Terreneuvian	Stage 2							Tommotian				521
		Stage 2											525.5
		Fortunian								529
																								538.8