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
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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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.

This timescale is used in the definition of 126700 collections

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International Chronostratigraphic Timescale			Cambrian of Australia	Cambrian of Kazakhstan	Cambrian of West Avalonia
Cambrian	Furongian	Stage 10	Datsonian	Batyrbaian		485.4
		Stage 10	Payntonian			486.8 *
		Jiangshanian	Iverian			489.5
				Aksaian		490.7 *
				Sakian		492.2 *
		Paibian	Idamean	Sakian		494
	Miaolingian	Guzhangian	Mindyallan	Ayusokkanian		497
			Mindyallan		Arcadian	498.4
			Boomerangian			499
			Boomerangian			499.5
		Drumian	Undillan	Zhanaarykian		500.5
		Drumian	Floran	Tuesaian		503
		Wuliuan	Templetonian	Tuesaian		504.5
			Templetonian			505.3
			Ordian			507.8 *
	Series 2	Stage 4			Branchian	509
				Toyonian		510 *
				Toyonian		510.8 *
				Botomian		512.5 *
		Stage 3		Botomian		514
				Atdabanian		515.6 *
				Atdabanian	Placentian	517.1
	Terreneuvian	Stage 2		Tommotian		521
		Stage 2				525.5
		Fortunian				529
						538.8