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
- 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
- F. M. Gradstein, F. P. Agterberg, J. G. Ogg, J. Hardenbol, P. Van Veen, J. Thierry, and Z. Huang. 1995. A Triassic, Jurassic, and Cretaceous time scale. SEPM Special Publication 54 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
- J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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 126762 collections
International Chronostratigraphic Timescale | Cambrian of Siberia | Obsolete Names for ICS Units | Cambrian of Britain | Cambrian of North America | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Cambrian | Furongian | Stage 10 | Batyrbaian | Tavgian † | Ketyan †/Yurakian | Merioneth | Dolgellian/Trempealeauan | Franconian †/Dresbachian/Millardan | 485.4 | |||||||
Sunwaptan | 487.5 | |||||||||||||||
Festiniogian | 489.2 * | |||||||||||||||
Jiangshanian | 489.5 | |||||||||||||||
Aksaian | 490.7 * | |||||||||||||||
Sakian | 492.2 * | |||||||||||||||
Steptoean | 493 * | |||||||||||||||
Maentwrogian | 493.1 * | |||||||||||||||
Paibian | 494 | |||||||||||||||
Ensyan †/Maduan/Nganasanian | 494.7 * | |||||||||||||||
Miaolingian | Guzhangian | Ayusokkanian | Series 3 † | St Davids | Marjumian | Albertian † | 497 | |||||||||
Mayan/Menevian | 499.5 | |||||||||||||||
Drumian | 500.5 | |||||||||||||||
Wuliuan | Amgan/Solvan | Stage 5 † | Topazan | 504.5 | ||||||||||||
Delamaran | 506.5 | |||||||||||||||
Series 2 | Stage 4 | Caerfai | Waucoban † | 509 | ||||||||||||
Toyonian | Lenian † | 510 * | ||||||||||||||
Dyeran | 511 * | |||||||||||||||
Botomian | 512.5 * | |||||||||||||||
Stage 3 | 514 | |||||||||||||||
Montezuman | 514.8 * | |||||||||||||||
Atdabanian | 515.6 * | |||||||||||||||
Begadean | 519.9 * | |||||||||||||||
Terreneuvian | Stage 2 | Tommotian | 521 | |||||||||||||
Nemakit-Daldynian | 525.5 | |||||||||||||||
Fortunian | Manykaian † | 529 | ||||||||||||||
538.8 |