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
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

Show less time

Show linear time

International Chronostratigraphic Timescale			Cambrian Epochs	Ordovician of the Baltic				Obsolete Names for ICS Units
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						Tertiary †			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							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									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			485.4
								486.3 *
								486.5
		Jiangshanian						489.5
		Paibian						494
	Miaolingian	Guzhangian			Middle Cambrian			Series 3 †		497
		Drumian								500.5
		Wuliuan							Stage 5 †	504.5
	Series 2	Stage 4			Early Cambrian					509
	Series 2	Stage 3								514
	Terreneuvian	Stage 2								521
	Terreneuvian	Fortunian								529
											538.8