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
M. Kretzoi. 1942. Necroteuthis n. g. (Ceph. Dibr., Necroteuthidae N. F.) aus dem Oligozän von Budapest und das system der Dibranchiata. Földtani Közlöny 72:125-238 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		Ordovician of North America						Cambrian of Australia	Ten Million Year Bins
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	Cincinnatian	Gamachian	Ordovician 5	443.8
		Katian		Gamachian		445.2
				Richmondian		446 *
				Maysvillian		Rocklandian †/Shermanian/Ashbyan/Kirkfieldian/Blackriveran/Wildernessian/Trentonian/Franklinian	449.8 *
				Edenian			450.4 *
			Mohawkian	Chatfieldian			451.1 *
		Sandbian		Chatfieldian	Ordovician 4		453
				Turinian			453.7 *
			Whiterockian			Canadian †	Chazyan †/Marmor	457 *
	Middle Ordovician	Darriwilian			Ordovician 3			458.4
		Dapingian			Ordovician 2			467.3
		Dapingian		Rangerian				469.1 *
	Early Ordovician	Floian	Ibexian	Blackhillsian			Jeffersonian †	Cassinian †	470
		Floian		Tulean					473.9 *
		Tremadocian		Tulean	Ordovician 1				477.7
				Stairsian					480.3 *
				Skullrockian				Demingian †	482 *
Cambrian	Furongian	Stage 10			Merioneth	Dolgellian/Trempealeauan				Datsonian	Cambrian 5	485.4
										Payntonian		486.8 *
												487.5
						Festiniogian						489.2 *
		Jiangshanian				Festiniogian				Iverian		489.5
		Jiangshanian				Maentwrogian				Iverian		493.1 *
		Paibian				Maentwrogian				Idamean		494
	Miaolingian	Guzhangian			St Davids					Mindyallan	Cambrian 4	497
		Guzhangian								Boomerangian		499
		Drumian								Undillan		500.5
		Drumian								Floran		503
		Wuliuan								Templetonian	Cambrian 3	504.5
		Wuliuan								Ordian		507.8 *
	Series 2	Stage 4			Caerfai					Ordian		509
		Stage 4										510.8 *
		Stage 3									Cambrian 2	514
	Terreneuvian	Stage 2									Cambrian 2	521
	Terreneuvian	Fortunian									Cambrian 1	529
													538.8