PBDB Timescale

Cambrian of China

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

F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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
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

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 1048 collections

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International Chronostratigraphic Timescale			Cambrian of China		Ordovician of North America					Cambrian of Britain
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	Niuchehean	Taoyuanian †		Skullrockian				Merioneth	Dolgellian/Trempealeauan	485.4
											Dolgellian/Trempealeauan	487.5
											Festiniogian	489.2 *
		Jiangshanian	Jiangshanian								Festiniogian	489.5
		Jiangshanian	Jiangshanian								Maentwrogian	493.1 *
		Paibian	Paibian									494
		Paibian	Paibian	Waergangian †/Youshuanian								494.9 *
	Miaolingian	Guzhangian	Guzhangian	Wangcunian †						St Davids		497
		Drumian	Drumian	Wangcunian †								500.5
		Wuliuan	Wuliuan/Taijangian									504.5
	Series 2	Stage 4	Duyunian							Caerfai		509
	Series 2	Stage 3	Nangaoian									514
	Terreneuvian	Stage 2	Meishucunian									521
		Fortunian	Meishucunian									529
		Fortunian	Jinnigian									530.7
												538.8