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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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
- 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
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.
This timescale is used in the definition of 126536 collections
| International Chronostratigraphic Timescale | Ten Million Year Bins | Cenozoic Subepochs | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Paleogene | Oligocene | Chattian | Cenozoic 4 | Late Oligocene | 23.03 | |||||
| Rupelian | Early Oligocene | 27.82 | ||||||||
| Eocene | Priabonian | Cenozoic 3 | Late Eocene | 33.9 | ||||||
| Bartonian | Middle Eocene | 37.71 | ||||||||
| Lutetian | Cenozoic 2 | 41.2 | ||||||||
| Ypresian | Early Eocene | 47.8 | ||||||||
| Paleocene | Thanetian | Cenozoic 1 | Late Paleocene | 56 | ||||||
| Selandian | Middle Paleocene | 59.2 | ||||||||
| Danian | Early Paleocene | 61.6 | ||||||||
| 66 | ||||||||||