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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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
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

Show more time

Show linear time

International Chronostratigraphic Timescale			Obsolete Names for ICS Units			Devonian of Eastern North America		Cretaceous-Cenozoic of New Zealand		Obsolete Carboniferous Ages of China	Cenozoic Subepochs	Cambrian of Siberia			Ordovician of the Baltic			Devonian Subages	Silurian of the Baltic
Quaternary	Holocene	Meghalayan						Wanganui	Haweran											0
		Northgrippian																		0.0042
		Greenlandian																		0.0082
	Pleistocene	Late Pleistocene									Late Pleistocene									0.0117
		Chibanian									Middle Pleistocene									0.129
		Chibanian							Castlecliffian		Middle Pleistocene									0.34
		Calabrian							Castlecliffian		Early Pleistocene									0.774
		Calabrian							Nukumaruan											1.63
		Gelasian							Nukumaruan											1.8
		Gelasian							Mangapanian											2.4
Neogene	Pliocene	Piacenzian	Tertiary †						Mangapanian		Late Pliocene									2.58
		Piacenzian							Waipipian		Late Pliocene									3
		Zanclean							Waipipian		Early Pliocene									3.6
		Zanclean							Opoitian		Early Pliocene									3.7
	Miocene	Messinian						Taranaki	Kapitean		Late Miocene									5.333
		Messinian							Tongaporutuan											7.2
		Tortonian							Tongaporutuan											7.246
		Tortonian						Southland	Waiauan											11.04
		Serravallian							Waiauan		Middle Miocene									11.63
		Serravallian							Lillburnian											13.05
		Langhian							Lillburnian											13.82
									Clifdenian											15.1
								Pareora	Altonian											15.9
		Burdigalian							Altonian		Early Miocene									15.98
		Burdigalian							Otaian											18.7
		Aquitanian							Otaian											20.44
		Aquitanian						Landon	Waitakian											21.7
Paleogene	Oligocene	Chattian							Waitakian		Late Oligocene									23.03
									Duntroonian											25.2
									Whaingaroan											27.3
		Rupelian									Early Oligocene									27.82
	Eocene	Priabonian									Late Eocene									33.9
								Arnold	Runangan											34.6
									Kaiatan											36.7
		Bartonian							Kaiatan		Middle Eocene									37.71
		Bartonian							Bortonian											39.1
		Lutetian							Bortonian											41.2
								Dannevirke	Porangan											42.6
									Heretaungan											45.7
		Ypresian							Heretaungan		Early Eocene									47.8
									Mangaorapan											48.9
									Waipawan											52
	Paleocene	Thanetian							Teurian		Late Paleocene									56
		Selandian									Middle Paleocene									59.2
		Danian									Early Paleocene									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			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				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					Conewangan/Conneautan/Canadaway	Late Famennian		358.9
								Middle Famennian		365.3 *
								Early Famennian		368.5 *
		Frasnian					West Fallsian/Sonyean	Late Frasnian		372.2
								Middle Frasnian		375.4 *
								Early Frasnian		379.3 *
	Middle Devonian	Givetian					Geneseean/Taghanican/Tioughniogan	Cazenovian		Late Givetian		382.7
										Middle Givetian		383.7 *
										Early Givetian		385.9 *
		Eifelian	Southwoodian				Late Eifelian			387.7
		Eifelian	Southwoodian				Early Eifelian			390.3 *
	Early Devonian	Emsian	Sawkillian/Deer Parkian				Helderbergian	Late Emsian		393.3
		Emsian	Sawkillian/Deer Parkian					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							430.5	Jaagarahu
		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				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 †							Ayusokkanian						497
		Guzhangian	Mayan/Menevian										499.5
		Drumian	Mayan/Menevian										500.5
		Wuliuan	Stage 5 †										Amgan/Solvan						504.5
	Series 2	Stage 4											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