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
- J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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
- Z.-X. Qiu and Z.-D. Qiu. 1995. Chronological sequence and subdivision of Chinese Neogene mammalian faunas. Palaeogeography, Palaeoclimatology, Palaeoecology 116(1-2):41-70 view
- J. I. Raine, A. G. Beu, A. F. Boyes, H. J. Campbell, R. A. Cooper, J. S. Crampton, M. P. Crundwell, C. J. Hollis, and H. E. G. Morgans. 2015. Revised Calibration of the New Zealand Geological Timescale: NZGT2015/1. GNS Science Report 2012(39) 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 126152 collections
International Chronostratigraphic Timescale | Ordovician of Australia | Ten Million Year Bins | Ordovician of Ibero-Bohemia | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Ordovician | Late Ordovician | Hirnantian | Bolindian | Ordovician 5 | Kosovian | 443.8 | ||||||||
Katian | Kralodvorian | Bohdalec † | 445.2 | |||||||||||
Eastonian | 449 * | |||||||||||||
Berounian | 449.7 * | |||||||||||||
Gisbornian | 452 * | |||||||||||||
Sandbian | Ordovician 4 | 453 | ||||||||||||
Zahorany †/Vinice | Letna † | 456.2 * | ||||||||||||
Liben † | 458 * | |||||||||||||
Middle Ordovician | Darriwilian | Darriwilian | Ordovician 3 | 458.4 | ||||||||||
Dobrotivian | 458.5 * | |||||||||||||
Oretanian | 459.7 * | |||||||||||||
Sarka † | 461.7 * | |||||||||||||
Dapingian | Yapeenian | Ordovician 2 | Klabava † | 467.3 | ||||||||||
Arenigian | 468 | |||||||||||||
Castlemainian | 468.5 * | |||||||||||||
Early Ordovician | Floian | Chewtonian | 470 | |||||||||||
Bendigonian | 471.8 * | |||||||||||||
Lancefieldian | 473.5 * | |||||||||||||
Tremadocian | Ordovician 1 | Tremadocian | 477.7 | |||||||||||
Warendian | 482.8 * | |||||||||||||
485.4 |