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
K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. 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			Ten Million Year Bins	Cambrian of China		Obsolete Names for ICS Units
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								Tertiary †			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									Longtanian †		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	443.8
		Katian	Ordovician 5	445.2
		Sandbian	Ordovician 4	453
	Middle Ordovician	Darriwilian	Ordovician 3	458.4
	Middle Ordovician	Dapingian	Ordovician 2	467.3
	Early Ordovician	Floian	Ordovician 2	470
		Tremadocian	Ordovician 1	477.7
		Tremadocian	Ordovician 1	Mansian †	483.55 *
Cambrian	Furongian	Stage 10	Late Cambrian	Batyrbaian	Tavgian †	Ketyan †/Yurakian	Cambrian 5	Niuchehean	Taoyuanian †	485.4
		Jiangshanian		Batyrbaian				Jiangshanian		489.5
				Aksaian						490.7 *
				Sakian						492.2 *
		Paibian						Paibian		494
						Ensyan †/Maduan/Nganasanian				494.7 *
						Ensyan †/Maduan/Nganasanian			Waergangian †/Youshuanian	494.9 *
	Miaolingian	Guzhangian	Middle Cambrian	Ayusokkanian			Cambrian 4	Guzhangian	Wangcunian †	Series 3 †		497
		Guzhangian		Mayan/Menevian				Guzhangian				499.5
		Drumian		Mayan/Menevian				Drumian				500.5
		Wuliuan		Amgan/Solvan			Cambrian 3	Wuliuan/Taijangian			Stage 5 †	504.5
	Series 2	Stage 4	Early Cambrian	Amgan/Solvan				Duyunian				509
				Toyonian	Lenian †							510 *
				Botomian								512.5 *
		Stage 3		Botomian			Cambrian 2	Nangaoian				514
		Stage 3		Atdabanian				Nangaoian				515.6 *
	Terreneuvian	Stage 2		Tommotian				Meishucunian				521
		Stage 2		Nemakit-Daldynian								525.5
		Fortunian			Manykaian †		Cambrian 1					529
		Fortunian			Manykaian †		Cambrian 1	Jinnigian				530.7
													538.8