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
M. O. Woodburne. 1987. A prospectus of the North American Mammal Ages. In: Woodburne, M. O. (ed.), Cenozoic Mammals of North America. University of California Press, Berkelery, CA 285-290 view
J. Alroy. 2000. New methods for quantifying macroevolutionary patterns and processes. Paleobiology 26(4):707-733 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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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			Silurian of England		North American Mammal Subages/Zones			Silurian Ages of Europe	Permian-Jurassic of New Zealand		Ordovician of the Baltic				Permian of China	Cenozoic Subepochs	Cretaceous-Cenozoic of New Zealand
Quaternary	Holocene	Meghalayan																		Wanganui	Haweran	0
		Northgrippian																				0.0042
		Greenlandian																				0.0082
	Pleistocene	Late Pleistocene						Sheridanian											Late Pleistocene			0.0117
		Chibanian						Sheridanian											Middle Pleistocene			0.129
								Cudahyan/Sappan														0.21
																					Castlecliffian	0.34
		Calabrian																	Early Pleistocene			0.774
								Senecan/Rexroadian														1.4
																					Nukumaruan	1.63
		Gelasian																			Nukumaruan	1.8
		Gelasian																			Mangapanian	2.4
Neogene	Pliocene	Piacenzian	Tertiary †																Late Pliocene		Mangapanian	2.58
		Piacenzian																	Late Pliocene		Waipipian	3
		Zanclean																	Early Pliocene		Waipipian	3.6
																					Opoitian	3.7
								Late Hemphillian/late Early Hemphillian/early Early Hemphillian													Opoitian	4.7
	Miocene	Messinian																	Late Miocene	Taranaki	Kapitean	5.333
		Messinian																			Tongaporutuan	7.2
		Tortonian																				7.246
								Late Clarendonian/Early Clarendonian														9.4
																				Southland	Waiauan	11.04
		Serravallian																	Middle Miocene			11.63
								late Late Barstovian/early Late Barstovian/Early Barstovian														12.5
																					Lillburnian	13.05
		Langhian																			Lillburnian	13.82
																					Clifdenian	15.1
																				Pareora	Altonian	15.9
		Burdigalian																	Early Miocene			15.98
								Late Hemingfordian/Early Hemingfordian														16.3
								late Late Arikareean/early Late Arikareean/late Early Arikareean/early Early Arikareean	Harrisonian													18.5
																					Otaian	18.7
		Aquitanian																			Otaian	20.44
		Aquitanian																		Landon	Waitakian	21.7
Paleogene	Oligocene	Chattian																	Late Oligocene			23.03
									Monroecreekian													23.1 *
									Geringian													24.7 *
																					Duntroonian	25.2
																					Whaingaroan	27.3
		Rupelian																	Early Oligocene			27.82
		Rupelian																	Early Oligocene			29.5
	Eocene	Priabonian						Late Chadronian/Middle Chadronian/Early Chadronian											Late Eocene			33.9
																				Arnold	Runangan	34.6
																					Kaiatan	36.7
																						37
		Bartonian																	Middle Eocene			37.71
																					Bortonian	39.1
								Late Uintan/Early Uintan														39.7
		Lutetian																				41.2
																				Dannevirke	Porangan	42.6
																					Heretaungan	45.7
								Twinbuttean/Blacksforkian/Gardnerbuttian														46.2
		Ypresian																	Early Eocene			47.8
																					Mangaorapan	48.9
								Lostcabinian/Lysitean/Graybullian/Sandcouleean													Mangaorapan	50.5
								Lostcabinian/Lysitean/Graybullian/Sandcouleean													Waipawan	52
										Cf3/Cf2/Cf1											Waipawan	54.9
	Paleocene	Thanetian								Cf3/Cf2/Cf1									Late Paleocene		Teurian	56
		Thanetian								Ti6/Ti5/Ti4/Ti3/Ti2/Ti1									Late Paleocene			56.2
		Selandian								Ti6/Ti5/Ti4/Ti3/Ti2/Ti1									Middle Paleocene			59.2
		Selandian								To3/To2/To1									Middle Paleocene			60.9
		Danian								To3/To2/To1									Early Paleocene			61.6
		Danian								Pu3/Pu2/Pu1									Early Paleocene			63.8
Cretaceous	Late Cretaceous	Maastrichtian																		Mata	Haumurian	66
		Campanian		72.1																	Haumurian
		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		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			Meishanian		251.902
						Waiitian			Meishanian		253.2
									Baoqingian		253.4 *
		Wuchiapingian							Longtanian †		Laoshanian	254.14
						Puruhauan					Laoshanian	254.2
						Puruhauan					Laibinian	257.7 *
	Guadalupian	Capitanian				Aparima			Flettian		Lengwuan	259.51
		Wordian						Kuhfengian	Flettian		264.28
		Wordian							Barettian		266
		Roadian									266.9
	Cisuralian	Kungurian						Luodianian			273.01
		Kungurian							Mangapirian		276
		Artinskian							Mangapirian		283.5
									Telfordian		285
			Longlinian					285.4 *	Telfordian
									288.5
		Sakmarian							290.1
		Asselian	Zisongian						293.52
Carboniferous	Pennsylvanian	Gzhelian	Zisongian						Mapingian †	298.9
		Gzhelian								300.1
		Kasimovian								303.7
		Kasimovian								305.9
		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				Red Downtonian/Temeside Shales/Downton Castle		Whitcliffe/Leintwardine			419.2
	Pridoli				Red Downtonian/Temeside Shales/Downton Castle		Bringewood/Elton			421.3
	Ludlow	Ludfordian			Coalbrookdale		Wenlock (England)/Tickwood			423
		Gorstian								425.6
		Gorstian					Buildwas			426.4 *
	Wenlock	Homerian					Buildwas			Gleedonian	427.4
					Wych		Woolhope			Gleedonian	428.4 *
										Whitwellian	429.7 *
		Sheinwoodian									430.5
	Llandovery	Telychian									433.4
		Telychian									436.3 *
		Aeronian									438.5
		Aeronian			Cowleigh Park						439.3 *
		Rhuddanian			Cowleigh Park						440.8
Ordovician	Late Ordovician	Hirnantian									Harju	Porkuni	Hirnantian	Xiaoxita †/Shikou	Wufeng †	443.8
		Katian										Pirgu	Chientangkiangian		Wufeng †	445.2
												Pirgu	Neichianshanian/Hanjiang			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										Uhaku	Darriwilian	Guniu †/Hulo			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										Volkhov	Dapingian					467.3
		Dapingian										Billingen	Dapingian					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 *
Cambrian	Furongian	Stage 10		Pakerort												485.4
																486.3 *
																486.5
		Jiangshanian														489.5
		Paibian				494
	Miaolingian	Guzhangian				Series 3 †		497
		Drumian						500.5
		Wuliuan						Stage 5 †								504.5
																						509