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
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
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 1048 collections

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International Chronostratigraphic Timescale			Cambrian of China		Ordovician of Britain				Cambrian of Australia	Cambrian Epochs	Cambrian of North America		Cambrian of Britain
Ordovician	Late Ordovician	Hirnantian			Ashgill	Hirnantian									443.8
		Katian				Rawtheyan									445.2
						Cautleyan									448.9 *
						Pusgillian									449.3 *
					Caradoc	Streffordian	Onnian †								449.6 *
						Cheneyan									451.5 *
						Burrellian									452.7 *
		Sandbian													453
							Actonian †								453.2 *
							Marshbrookian †	Woolstonian †							454.2 *
							Longvillian †								455.2 *
						Aurelucian	Longvillian †								456.8 *
						Aurelucian	Soudleyan †/Harnagian/Costonian								457.4 *
	Middle Ordovician	Darriwilian			Llanvirn	Llandeilian/Llandeilo/Late Llandeilo/Middle Llandeilo/Early Llandeilo/Late Llanvirn									458.4
		Darriwilian				Abereiddian/Early Llanvirn									461.3 *
		Dapingian				Abereiddian/Early Llanvirn									467.3
		Dapingian			Arenig	Fennian									468.4 *
	Early Ordovician	Floian				Fennian									470
						Whitlandian									471.1 *
						Moridunian									474.3 *
		Tremadocian			Tremadoc	Migneintian									477.7
					Tremadoc	Cressagian									480.8 *
															485 *
Cambrian	Furongian	Stage 10	Niuchehean	Taoyuanian †					Datsonian	Late Cambrian		Franconian †/Dresbachian/Millardan	Merioneth	Dolgellian/Trempealeauan	485.4
									Payntonian						486.8 *
											Sunwaptan				487.5
														Festiniogian	489.2 *
		Jiangshanian	Jiangshanian						Iverian						489.5
											Steptoean				493 *
														Maentwrogian	493.1 *
		Paibian	Paibian						Idamean						494
		Paibian	Paibian	Waergangian †/Youshuanian					Idamean						494.9 *
	Miaolingian	Guzhangian	Guzhangian	Wangcunian †					Mindyallan	Middle Cambrian	Marjumian	Albertian †	St Davids		497
		Guzhangian	Guzhangian						Boomerangian						499
		Drumian	Drumian						Undillan						500.5
		Drumian	Drumian						Floran						503
		Wuliuan	Wuliuan/Taijangian						Templetonian		Topazan				504.5
									Templetonian		Delamaran				506.5
									Ordian						507.8 *
	Series 2	Stage 4	Duyunian						Ordian	Early Cambrian		Waucoban †	Caerfai		509
															510.8 *
											Dyeran				511 *
		Stage 3	Nangaoian								Dyeran				514
											Montezuman				514.8 *
											Begadean				519.9 *
	Terreneuvian	Stage 2	Meishucunian												521
		Fortunian	Meishucunian												529
		Fortunian	Jinnigian												530.7
															538.8