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
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. 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

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International Chronostratigraphic Timescale			Cambrian of Britain		Cambrian of Australia	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	Datsonian	Cambrian 5		Batyrbaian	Tavgian †	Ketyan †/Yurakian	485.4
				Dolgellian/Trempealeauan	Payntonian						486.8 *
				Festiniogian	Payntonian						489.2 *
		Jiangshanian			Iverian						489.5
								Aksaian			490.7 *
								Sakian			492.2 *
				Maentwrogian							493.1 *
		Paibian			Idamean						494
		Paibian			Idamean					Ensyan †/Maduan/Nganasanian	494.7 *
	Miaolingian	Guzhangian	St Davids		Mindyallan	Series 3 †		Cambrian 4	Ayusokkanian			497
					Boomerangian				Ayusokkanian			499
					Boomerangian				Mayan/Menevian			499.5
		Drumian			Undillan							500.5
		Drumian			Floran							503
		Wuliuan			Templetonian		Stage 5 †	Cambrian 3	Amgan/Solvan			504.5
		Wuliuan			Ordian		Stage 5 †					507.8 *
	Series 2	Stage 4	Caerfai									509
									Toyonian	Lenian †		510 *
									Toyonian			510.8 *
									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