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 1049 collections

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International Chronostratigraphic Timescale			Cambrian of China		Cambrian of Britain		Ordovician of Britain				Cambrian of Kazakhstan
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			Ungurian	477.7
							Tremadoc	Cressagian				480.8 *
												485 *
Cambrian	Furongian	Stage 10	Niuchehean	Taoyuanian †	Merioneth	Dolgellian/Trempealeauan					Batyrbaian	485.4
		Stage 10	Niuchehean			Festiniogian						489.2 *
		Jiangshanian	Jiangshanian									489.5
											Aksaian	490.7 *
											Sakian	492.2 *
						Maentwrogian						493.1 *
		Paibian	Paibian									494
		Paibian	Paibian	Waergangian †/Youshuanian								494.9 *
	Miaolingian	Guzhangian	Guzhangian	Wangcunian †	St Davids						Ayusokkanian	497
		Guzhangian	Guzhangian									499.5
		Drumian	Drumian								Zhanaarykian	500.5
		Drumian	Drumian								Tuesaian	503
		Wuliuan	Wuliuan/Taijangian								Tuesaian	504.5
		Wuliuan	Wuliuan/Taijangian									505.3
	Series 2	Stage 4	Duyunian		Caerfai							509
											Toyonian	510 *
											Botomian	512.5 *
		Stage 3	Nangaoian								Botomian	514
		Stage 3	Nangaoian								Atdabanian	515.6 *
	Terreneuvian	Stage 2	Meishucunian								Tommotian	521
		Stage 2										525.5
		Fortunian										529
		Fortunian	Jinnigian									530.7
												538.8