PBDB Timescale

Cambrian Epochs

The interval definitions in this timescale are derived from the following sources:

F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view

There are 12 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 594 collections

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International Chronostratigraphic Timescale			Cambrian Epochs	Ordovician of the Baltic				Cambrian of Australia	Cambrian of Britain		Cambrian of West Avalonia
Quaternary	Holocene	Meghalayan										0
		Northgrippian										0.0042
		Greenlandian										0.0082
	Pleistocene	Late Pleistocene										0.0117
		Chibanian										0.129
		Calabrian										0.774
		Gelasian										1.8
Neogene	Pliocene	Piacenzian										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										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										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	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		419.2
	Ludlow	Ludfordian	423
	Ludlow	Gorstian	425.6
	Wenlock	Homerian	427.4
	Wenlock	Sheinwoodian	430.5
	Llandovery	Telychian	433.4
		Aeronian	438.5
		Rhuddanian	440.8
Ordovician	Late Ordovician	Hirnantian	Harju	Porkuni	443.8
		Katian		Pirgu	445.2
				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		458.4
				Lasnamagi		458.9 *
				Aseri		460.4 *
			Oeland	Kunda		462.9 *
				Kunda	Valaste †/Hunderum	464.3 *
				Volkhov		Langevoja †/Vaana/Saka	467.1 *
		Dapingian		Volkhov			467.3
		Dapingian		Billingen			469.3 *
	Early Ordovician	Floian					470
					Latorp †		470.1 *
				Hunneberg			473.7 *
		Tremadocian		Hunneberg			477.7
				Varangu			481.3 *
				Pakerort			482.2 *
Cambrian	Furongian	Stage 10		Pakerort	Late Cambrian			Datsonian	Merioneth	Dolgellian/Trempealeauan	485.4
											486.3 *
											486.5
								Payntonian			486.8 *
								Payntonian		Festiniogian	489.2 *
		Jiangshanian						Iverian		Festiniogian	489.5
		Jiangshanian						Iverian		Maentwrogian	493.1 *
		Paibian						Idamean		Maentwrogian	494
	Miaolingian	Guzhangian			Middle Cambrian			Mindyallan	St Davids		497
								Mindyallan			Arcadian	498.4
								Boomerangian				499
		Drumian						Undillan				500.5
		Drumian						Floran				503
		Wuliuan						Templetonian				504.5
		Wuliuan						Ordian				507.8 *
	Series 2	Stage 4			Early Cambrian			Ordian	Caerfai		Branchian	509
		Stage 4										510.8 *
		Stage 3										514
		Stage 3									Placentian	517.1
	Terreneuvian	Stage 2										521
	Terreneuvian	Fortunian										529
												538.8