PBDB Timescale

Cambrian Epochs

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

F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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
D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. 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

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 594 collections

Show more time

Show linear time

International Chronostratigraphic Timescale			Cambrian Epochs	Cambrian of Siberia			Ordovician of North America
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 *
				Mansian †							Demingian †	483.55 *
Cambrian	Furongian	Stage 10	Late Cambrian	Batyrbaian	Tavgian †	Ketyan †/Yurakian						485.4
		Stage 10										487.5
		Jiangshanian										489.5
				Aksaian								490.7 *
				Sakian								492.2 *
		Paibian										494
		Paibian				Ensyan †/Maduan/Nganasanian						494.7 *
	Miaolingian	Guzhangian	Middle Cambrian	Ayusokkanian								497
		Guzhangian		Mayan/Menevian								499.5
		Drumian		Mayan/Menevian								500.5
		Wuliuan		Amgan/Solvan								504.5
	Series 2	Stage 4	Early Cambrian	Amgan/Solvan								509
				Toyonian	Lenian †							510 *
				Botomian								512.5 *
		Stage 3		Botomian								514
		Stage 3		Atdabanian								515.6 *
	Terreneuvian	Stage 2		Tommotian								521
		Stage 2		Nemakit-Daldynian								525.5
		Fortunian		Nemakit-Daldynian	Manykaian †							529
												538.8