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
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		Ordovician of North America					Cambrian of West Avalonia	Cambrian of China
Ordovician	Late Ordovician	Hirnantian			Cincinnatian	Gamachian							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							453
						Turinian							453.7 *
					Whiterockian		Canadian †	Chazyan †/Marmor					457 *
	Middle Ordovician	Darriwilian											458.4
		Dapingian											467.3
		Dapingian				Rangerian							469.1 *
	Early Ordovician	Floian			Ibexian	Blackhillsian		Jeffersonian †	Cassinian †				470
		Floian				Tulean							473.9 *
		Tremadocian				Tulean							477.7
						Stairsian							480.3 *
						Skullrockian			Demingian †				482 *
Cambrian	Furongian	Stage 10	Merioneth	Dolgellian/Trempealeauan		Skullrockian					Niuchehean	Taoyuanian †	485.4
				Dolgellian/Trempealeauan									487.5
				Festiniogian									489.2 *
		Jiangshanian		Festiniogian							Jiangshanian		489.5
		Jiangshanian		Maentwrogian							Jiangshanian		493.1 *
		Paibian									Paibian		494
		Paibian									Paibian	Waergangian †/Youshuanian	494.9 *
	Miaolingian	Guzhangian	St Davids								Guzhangian	Wangcunian †	497
		Guzhangian								Arcadian	Guzhangian		498.4
		Drumian									Drumian		500.5
		Wuliuan									Wuliuan/Taijangian		504.5
	Series 2	Stage 4	Caerfai							Branchian	Duyunian		509
		Stage 3								Branchian	Nangaoian		514
		Stage 3								Placentian	Nangaoian		517.1
	Terreneuvian	Stage 2									Meishucunian		521
		Fortunian									Meishucunian		529
		Fortunian									Jinnigian		530.7
													538.8