PBDB Timescale

Cambrian of Britain

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

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
K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. 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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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 602 collections

Show more time

Show linear time

International Chronostratigraphic Timescale			Cambrian of Britain		Obsolete Names for ICS Units			Ten Million Year Bins	Cambrian of Siberia
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	Merioneth	Dolgellian/Trempealeauan	Cambrian 5		Batyrbaian	Tavgian †	Ketyan †/Yurakian	485.4
		Stage 10		Festiniogian						489.2 *
		Jiangshanian								489.5
							Aksaian			490.7 *
							Sakian			492.2 *
				Maentwrogian						493.1 *
		Paibian								494
		Paibian							Ensyan †/Maduan/Nganasanian	494.7 *
	Miaolingian	Guzhangian	St Davids		Series 3 †		Cambrian 4	Ayusokkanian			497
		Guzhangian						Mayan/Menevian			499.5
		Drumian						Mayan/Menevian			500.5
		Wuliuan				Stage 5 †	Cambrian 3	Amgan/Solvan			504.5
	Series 2	Stage 4	Caerfai					Amgan/Solvan			509
								Toyonian	Lenian †		510 *
								Botomian			512.5 *
		Stage 3					Cambrian 2	Botomian			514
		Stage 3						Atdabanian			515.6 *
	Terreneuvian	Stage 2						Tommotian			521
		Stage 2						Nemakit-Daldynian			525.5
		Fortunian					Cambrian 1	Nemakit-Daldynian	Manykaian †		529
												538.8