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
- J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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
- M. Freudenthal. 2006. Mammal Paleogene zones. personal communication view
- P. L. Gibbard, M. J. Head, and M. J. C. Walker. 2010. Formal ratification of the Quaternary System/Period and the Pleistocene Series/Epoch with a base at 2.58 Ma. Journal of Quaternary Science 25(2):96-102 view
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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 127017 collections
International Chronostratigraphic Timescale | Cambrian of Siberia | Ordovician of Australia | |||||||
---|---|---|---|---|---|---|---|---|---|
Ordovician | Late Ordovician | Hirnantian | Bolindian | 443.8 | |||||
Katian | 445.2 | ||||||||
Eastonian | 449 * | ||||||||
Gisbornian | 452 * | ||||||||
Sandbian | 453 | ||||||||
Middle Ordovician | Darriwilian | Darriwilian | 458.4 | ||||||
Dapingian | Yapeenian | 467.3 | |||||||
Castlemainian | 468.5 * | ||||||||
Early Ordovician | Floian | Chewtonian | 470 | ||||||
Bendigonian | 471.8 * | ||||||||
Lancefieldian | 473.5 * | ||||||||
Tremadocian | 477.7 | ||||||||
Warendian | 482.8 * | ||||||||
Mansian † | 483.55 * | ||||||||
485.4 |