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. F. Steininger, W. A. Berggren, D. V. Kent, R. L. Bernor, S. Sen and J. Agusti. 1996. Circum-Mediterranean Neogene (Miocene and Pliocene) marine-continental chronologic correlations of European mammal units. The Evolution of Western Eurasian Neogene Mammal Faunas (eds. R. L. Bernor, V. Fahlbusch, and H.-W. Mittmann) 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
- B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
- D. H. Erwin and S. A. Bowring. 2004. Cambrian time scale. view
- F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
- J. A. Lillegraven and M. C. McKenna. 1986. Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages". American Museum Novitates 2840:1-68 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 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 126144 collections
International Chronostratigraphic Timescale | Ordovician of the Baltic | Cambrian of Siberia | Cambrian of West Avalonia | Cambrian of Australia | Ordovician of North America | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
462.9 | ||||||||||||||
470 | ||||||||||||||
482 | ||||||||||||||
482.2 | ||||||||||||||
Cambrian | Furongian | Stage 10 | Oeland | Pakerort | Batyrbaian | Tavgian † | Ketyan †/Yurakian | Datsonian | Ibexian | Skullrockian | 485.4 * | |||
486.3 * | ||||||||||||||
486.5 | ||||||||||||||
Payntonian | 486.8 * | |||||||||||||
487.5 | ||||||||||||||
Jiangshanian | Iverian | 489.5 | ||||||||||||
Aksaian | 490.7 * | |||||||||||||
Sakian | 492.2 * | |||||||||||||
Paibian | Idamean | 494 | ||||||||||||
Ensyan †/Maduan/Nganasanian | 494.7 * | |||||||||||||
Miaolingian | Guzhangian | Ayusokkanian | Mindyallan | 497 | ||||||||||
Arcadian | 498.4 | |||||||||||||
Boomerangian | 499 | |||||||||||||
Mayan/Menevian | 499.5 | |||||||||||||
Drumian | Undillan | 500.5 | ||||||||||||
Floran | 503 | |||||||||||||
Wuliuan | Amgan/Solvan | Templetonian | 504.5 | |||||||||||
Ordian | 507.8 * | |||||||||||||
Series 2 | Stage 4 | Branchian | 509 | |||||||||||
Toyonian | Lenian † | 510 * | ||||||||||||
510.8 * | ||||||||||||||
Botomian | 512.5 * | |||||||||||||
Stage 3 | 514 | |||||||||||||
Atdabanian | 515.6 * | |||||||||||||
Placentian | 517.1 | |||||||||||||
Terreneuvian | Stage 2 | Tommotian | 521 | |||||||||||
Nemakit-Daldynian | 525.5 | |||||||||||||
Fortunian | Manykaian † | 529 | ||||||||||||
538.8 |