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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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
- 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 127262 collections
| International Chronostratigraphic Timescale | Cenozoic Subepochs | Paleogene Mammal Ages of Asia | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Paleogene | Oligocene | Chattian | Late Oligocene | Tabenbulakian | Hsandagolian | 23.03 | |||
| Rupelian | Early Oligocene | Kekeamuan | 27.82 | ||||||
| Eocene | Priabonian | Late Eocene | Houldjinian/Ergilian/Ulangochuian | 33.9 | |||||
| Bartonian | Middle Eocene | Sharamurunian/Irdinmanhan/Arshantan | 37.71 | ||||||
| Lutetian | 41.2 | ||||||||
| Ypresian | Early Eocene | Bumbanian | 47.8 | ||||||
| Paleocene | Thanetian | Late Paleocene | Gashatan | 56 | |||||
| Selandian | Middle Paleocene | 59.2 | |||||||
| Danian | Early Paleocene | 61.6 | |||||||
| 66 | |||||||||