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
- 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, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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
- J. Palfy, P. L. Smith, and J. K. Mortensen. 2000. A U-Pb and 40Ar/39Ar time scale for the Jurassic. Canadian Journal of Earth Sciences 37(6):923-944 view
- B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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
- 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
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 126130 collections
International Chronostratigraphic Timescale | Cambrian of Britain | Ordovician of the Baltic | Ordovician of North America | Cambrian of Siberia | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
462.9 | ||||||||||||||||
470 | ||||||||||||||||
482 | ||||||||||||||||
482.2 | ||||||||||||||||
Cambrian | Furongian | Stage 10 | Merioneth | Dolgellian/Trempealeauan | Oeland | Pakerort | Ibexian | Skullrockian | Batyrbaian | Tavgian † | Ketyan †/Yurakian | 485.4 * | ||||
486.3 * | ||||||||||||||||
486.5 | ||||||||||||||||
487.5 | ||||||||||||||||
Festiniogian | 489.2 * | |||||||||||||||
Jiangshanian | 489.5 | |||||||||||||||
Aksaian | 490.7 * | |||||||||||||||
Sakian | 492.2 * | |||||||||||||||
Maentwrogian | 493.1 * | |||||||||||||||
Paibian | 494 | |||||||||||||||
Ensyan †/Maduan/Nganasanian | 494.7 * | |||||||||||||||
Miaolingian | Guzhangian | St Davids | Ayusokkanian | 497 | ||||||||||||
Mayan/Menevian | 499.5 | |||||||||||||||
Drumian | 500.5 | |||||||||||||||
Wuliuan | Amgan/Solvan | 504.5 | ||||||||||||||
Series 2 | Stage 4 | Caerfai | 509 | |||||||||||||
Toyonian | Lenian † | 510 * | ||||||||||||||
Botomian | 512.5 * | |||||||||||||||
Stage 3 | 514 | |||||||||||||||
Atdabanian | 515.6 * | |||||||||||||||
Terreneuvian | Stage 2 | Tommotian | 521 | |||||||||||||
Nemakit-Daldynian | 525.5 | |||||||||||||||
Fortunian | Manykaian † | 529 | ||||||||||||||
538.8 |