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
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
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
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 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	Cambrian of Britain		Cambrian of Siberia			Cambrian of Kazakhstan	Cambrian of North America		Ordovician of North America
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	Cincinnatian	Gamachian	443.8
		Katian		Gamachian	445.2
				Richmondian	446 *
				Maysvillian	Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
				Edenian		450.4 *
			Mohawkian	Chatfieldian		451.1 *
		Sandbian		Chatfieldian		453
				Turinian		453.7 *
			Whiterockian		Canadian †	Chazyan †/Marmor	457 *
	Middle Ordovician	Darriwilian					458.4
		Dapingian					467.3
		Dapingian		Rangerian			469.1 *
	Early Ordovician	Floian	Ibexian	Blackhillsian		Jeffersonian †	Cassinian †	470
		Floian		Tulean				473.9 *
		Tremadocian		Tulean				Ungurian	477.7
				Stairsian					480.3 *
				Skullrockian			Demingian †		482 *
							Demingian †		Mansian †	483.55 *
Cambrian	Furongian	Stage 10			Late Cambrian	Merioneth	Dolgellian/Trempealeauan	Batyrbaian	Tavgian †	Ketyan †/Yurakian	Batyrbaian	Franconian †/Dresbachian/Millardan	485.4
			Sunwaptan				Dolgellian/Trempealeauan							487.5
							Festiniogian							489.2 *
		Jiangshanian												489.5
								Aksaian			Aksaian			490.7 *
								Sakian			Sakian			492.2 *
			Steptoean											493 *
							Maentwrogian							493.1 *
		Paibian												494
		Paibian								Ensyan †/Maduan/Nganasanian				494.7 *
	Miaolingian	Guzhangian	Middle Cambrian		St Davids		Ayusokkanian			Ayusokkanian	Marjumian	Albertian †		497
		Guzhangian					Mayan/Menevian							499.5
		Drumian								Zhanaarykian				500.5
		Drumian								Tuesaian				503
		Wuliuan					Amgan/Solvan			Tuesaian	Topazan			504.5
											Topazan			505.3
											Delamaran			506.5
	Series 2	Stage 4	Early Cambrian		Caerfai							Waucoban †		509
							Toyonian	Lenian †		Toyonian				510 *
							Toyonian			Toyonian	Dyeran			511 *
							Botomian			Botomian				512.5 *
		Stage 3												514
											Montezuman			514.8 *
							Atdabanian			Atdabanian	Montezuman			515.6 *
							Atdabanian			Atdabanian	Begadean			519.9 *
	Terreneuvian	Stage 2					Tommotian			Tommotian				521
		Stage 2					Nemakit-Daldynian							525.5
		Fortunian					Nemakit-Daldynian	Manykaian †						529
															538.8