PBDB Interval

International Chronostratigraphic Timescale

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

K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view
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
P. L. Gibbard, M. J. Head, and M. J. C. Walker. 2010. Formal ratification of the Quaternary System/Period and the Pleistocene Series/Epoch with a base at 2.58 Ma. Journal of Quaternary Science 25(2):96-102 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 59 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 126689 collections

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International Chronostratigraphic Timescale			Cambrian of China		Cambrian of Australia
Cambrian	Furongian	Stage 10	Niuchehean	Taoyuanian †	Datsonian	485.4
		Stage 10	Niuchehean		Payntonian	486.8 *
		Jiangshanian	Jiangshanian		Iverian	489.5
		Paibian	Paibian		Idamean	494
		Paibian	Paibian	Waergangian †/Youshuanian	Idamean	494.9 *
	Miaolingian	Guzhangian	Guzhangian	Wangcunian †	Mindyallan	497
		Guzhangian	Guzhangian		Boomerangian	499
		Drumian	Drumian		Undillan	500.5
		Drumian	Drumian		Floran	503
		Wuliuan	Wuliuan/Taijangian		Templetonian	504.5
		Wuliuan	Wuliuan/Taijangian		Ordian	507.8 *
	Series 2	Stage 4	Duyunian		Ordian	509
		Stage 4	Duyunian			510.8 *
		Stage 3	Nangaoian			514
	Terreneuvian	Stage 2	Meishucunian			521
		Fortunian	Meishucunian			529
		Fortunian	Jinnigian			530.7
						538.8