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
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
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 602 collections

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International Chronostratigraphic Timescale			Cambrian of Britain		Cambrian of Siberia			Ordovician of the Baltic			Ten Million Year Bins	Cambrian of Australia
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	Harju	Porkuni	Ordovician 5	443.8
		Katian		Pirgu		445.2
				Vormsi		449.6 *
				Nabala		Johvi †	450 *
			Viru	Rakvere			450.6 *
				Oandu			452 *
		Sandbian		Keila	Idavere †	Ordovician 4	453
				Haljala			453.9
				Kukruse			456.4 *
				Uhaku	Aluoja †		457.5 *
	Middle Ordovician	Darriwilian		Uhaku		Ordovician 3	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		Ordovician 2		467.3
		Dapingian		Billingen				469.3 *
	Early Ordovician	Floian						470
					Latorp †			470.1 *
				Hunneberg				473.7 *
		Tremadocian		Hunneberg		Ordovician 1		477.7
				Varangu				481.3 *
				Pakerort				482.2 *
								Mansian †	483.55 *
Cambrian	Furongian	Stage 10			Merioneth	Dolgellian/Trempealeauan		Batyrbaian	Tavgian †	Ketyan †/Yurakian	Cambrian 5	Datsonian	485.4
													486.3 *
													486.5
												Payntonian	486.8 *
						Festiniogian						Payntonian	489.2 *
		Jiangshanian										Iverian	489.5
								Aksaian					490.7 *
								Sakian					492.2 *
						Maentwrogian							493.1 *
		Paibian										Idamean	494
		Paibian								Ensyan †/Maduan/Nganasanian		Idamean	494.7 *
	Miaolingian	Guzhangian			St Davids			Ayusokkanian			Cambrian 4	Mindyallan	497
								Ayusokkanian				Boomerangian	499
								Mayan/Menevian				Boomerangian	499.5
		Drumian										Undillan	500.5
		Drumian										Floran	503
		Wuliuan						Amgan/Solvan			Cambrian 3	Templetonian	504.5
		Wuliuan										Ordian	507.8 *
	Series 2	Stage 4			Caerfai								509
								Toyonian	Lenian †				510 *
								Toyonian					510.8 *
								Botomian					512.5 *
		Stage 3						Botomian			Cambrian 2		514
		Stage 3						Atdabanian					515.6 *
	Terreneuvian	Stage 2						Tommotian					521
		Stage 2						Nemakit-Daldynian					525.5
		Fortunian						Nemakit-Daldynian	Manykaian †		Cambrian 1		529
													538.8