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
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

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 Siberia			Cambrian of West Avalonia	Ten Million Year Bins	Cambrian of North America		Ordovician of the Baltic			Cambrian of Kazakhstan
Quaternary	Holocene	Meghalayan						Cenozoic 6							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						Cenozoic 5							11.63
		Langhian													13.82
		Burdigalian													15.98
		Aquitanian													20.44
Paleogene	Oligocene	Chattian						Cenozoic 4							23.03
	Oligocene	Rupelian						Cenozoic 4							27.82
	Eocene	Priabonian						Cenozoic 3							33.9
		Bartonian						Cenozoic 3							37.71
		Lutetian						Cenozoic 2							41.2
		Ypresian						Cenozoic 2							47.8
	Paleocene	Thanetian						Cenozoic 1							56
		Selandian													59.2
		Danian													61.6
Cretaceous	Late Cretaceous	Maastrichtian						Cretaceous 8							66
		Campanian						Cretaceous 7							72.1
		Santonian						Cretaceous 6							83.6
		Coniacian													86.3
		Turonian													89.8
		Cenomanian						Cretaceous 5							93.9
	Early Cretaceous	Albian						Cretaceous 4							100.5
		Aptian						Cretaceous 3							113
		Barremian						Cretaceous 2							121.4
		Hauterivian						Cretaceous 2							125.77
		Valanginian						Cretaceous 1							132.6
		Berriasian						Cretaceous 1							139.8
Jurassic	Late Jurassic	Tithonian						Jurassic 6							145
		Kimmeridgian						Jurassic 5							149.2
		Oxfordian													154.8
	Middle Jurassic	Callovian													161.5
		Bathonian						Jurassic 4							165.3
		Bajocian						Jurassic 4							168.2
		Aalenian						Jurassic 3							170.9
	Early Jurassic	Toarcian						Jurassic 3							174.7
		Pliensbachian						Jurassic 2							184.2
		Sinemurian						Jurassic 1							192.9
		Hettangian						Jurassic 1							199.5
Triassic	Late Triassic	Rhaetian						Triassic 4							201.4
		Norian						Triassic 4							208.5
		Carnian						Triassic 3							227
	Middle Triassic	Ladinian						Triassic 2							237
	Middle Triassic	Anisian						Triassic 2							242
	Early Triassic	Olenekian						Triassic 1							247.2
	Early Triassic	Induan						Triassic 1							251.2
Permian	Lopingian	Changhsingian						Permian 4							251.902
	Lopingian	Wuchiapingian													254.14
	Guadalupian	Capitanian													259.51
		Wordian													264.28
		Roadian						Permian 3							266.9
	Cisuralian	Kungurian						Permian 2							273.01
		Artinskian													283.5
		Sakmarian													290.1
		Asselian						Permian 1							293.52
Carboniferous	Pennsylvanian	Gzhelian						Carboniferous 5							298.9
		Kasimovian	303.7					Carboniferous 5
		Moscovian	Carboniferous 4	307
		Bashkirian	Carboniferous 4	315.2
	Mississippian	Serpukhovian	Carboniferous 3	323.2
		Visean	Carboniferous 2	330.9
		Tournaisian	Carboniferous 1	346.7
Devonian	Late Devonian	Famennian	Devonian 5	358.9
	Late Devonian	Frasnian	Devonian 4	372.2
	Middle Devonian	Givetian	Devonian 3	382.7
	Middle Devonian	Eifelian	Devonian 3	387.7
	Early Devonian	Emsian	Devonian 2	393.3
		Pragian	Devonian 1	407.6
		Lochkovian	Devonian 1	410.8
Silurian	Pridoli		Silurian 2	419.2
	Ludlow	Ludfordian		423
	Ludlow	Gorstian		425.6
	Wenlock	Homerian		427.4
	Wenlock	Sheinwoodian		430.5
	Llandovery	Telychian	Silurian 1	433.4
		Aeronian		438.5
		Rhuddanian		440.8
Ordovician	Late Ordovician	Hirnantian	Ordovician 5	Harju	Porkuni	443.8
		Katian			Pirgu	445.2
					Vormsi	449.6 *
					Nabala	Johvi †	450 *
				Viru	Rakvere		450.6 *
					Oandu		452 *
		Sandbian	Ordovician 4		Keila	Idavere †	453
					Haljala		453.9
					Kukruse		456.4 *
					Uhaku	Aluoja †	457.5 *
	Middle Ordovician	Darriwilian	Ordovician 3		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	Ordovician 2		Volkhov			467.3
		Dapingian			Billingen			469.3 *
	Early Ordovician	Floian						470
						Latorp †		470.1 *
					Hunneberg			473.7 *
		Tremadocian	Ordovician 1		Hunneberg			Ungurian	477.7
					Varangu				481.3 *
					Pakerort				482.2 *
									Mansian †	483.55 *
Cambrian	Furongian	Stage 10	Late Cambrian			Batyrbaian		Tavgian †	Ketyan †/Yurakian	Cambrian 5	Franconian †/Dresbachian/Millardan	Batyrbaian	485.4
													486.3 *
													486.5
													Sunwaptan	487.5
		Jiangshanian												489.5
						Aksaian						Aksaian		490.7 *
						Sakian						Sakian		492.2 *
													Steptoean	493 *
		Paibian												494
		Paibian							Ensyan †/Maduan/Nganasanian					494.7 *
	Miaolingian	Guzhangian	Middle Cambrian			Ayusokkanian				Cambrian 4	Marjumian	Albertian †	Ayusokkanian	497
						Ayusokkanian							Ayusokkanian	Arcadian	498.4
						Mayan/Menevian									499.5
		Drumian											Zhanaarykian		500.5
		Drumian											Tuesaian		503
		Wuliuan				Amgan/Solvan				Cambrian 3	Topazan		Tuesaian		504.5
											Topazan				505.3
											Delamaran				506.5
	Series 2	Stage 4	Early Cambrian									Branchian		Waucoban †	509
						Toyonian		Lenian †					Toyonian		510 *
						Toyonian					Dyeran		Toyonian		511 *
						Botomian							Botomian		512.5 *
		Stage 3								Cambrian 2					514
											Montezuman				514.8 *
						Atdabanian							Atdabanian		515.6 *
												Placentian			517.1
											Begadean				519.9 *
	Terreneuvian	Stage 2				Tommotian							Tommotian		521
		Stage 2				Nemakit-Daldynian									525.5
		Fortunian				Nemakit-Daldynian		Manykaian †		Cambrian 1					529
															538.8