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, 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
- F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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
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 127111 collections
| International Chronostratigraphic Timescale | Mesozoic Subages | ||||
|---|---|---|---|---|---|
| Quaternary | Holocene | Meghalayan | 0 | ||
| Northgrippian | 0.0042 | ||||
| Greenlandian | 0.0082 | ||||
| Pleistocene | Late Pleistocene | 0.0117 | |||
| Chibanian | 0.129 | ||||
| Calabrian | 0.774 | ||||
| Gelasian | 1.8 | ||||
| Neogene | Pliocene | Piacenzian | 2.58 | ||
| Zanclean | 3.6 | ||||
| Miocene | Messinian | 5.333 | |||
| Tortonian | 7.246 | ||||
| Serravallian | 11.63 | ||||
| Langhian | 13.82 | ||||
| Burdigalian | 15.98 | ||||
| Aquitanian | 20.44 | ||||
| Paleogene | Oligocene | Chattian | 23.03 | ||
| Rupelian | 27.82 | ||||
| Eocene | Priabonian | 33.9 | |||
| Bartonian | 37.71 | ||||
| Lutetian | 41.2 | ||||
| Ypresian | 47.8 | ||||
| Paleocene | Thanetian | 56 | |||
| Selandian | 59.2 | ||||
| Danian | 61.6 | ||||
| Cretaceous | Late Cretaceous | Maastrichtian | Late Maastrichtian/Early Maastrichtian | 66 | |
| Campanian | Late Campanian/Middle Campanian/Early Campanian | 72.1 | |||
| Santonian | Late Santonian/Middle Santonian/Early Santonian | 83.6 | |||
| Coniacian | Late Coniacian/Middle Coniacian/Early Coniacian | 86.3 | |||
| Turonian | Late Turonian/Middle Turonian/Early Turonian | 89.8 | |||
| Cenomanian | Late Cenomanian/Middle Cenomanian/Early Cenomanian | 93.9 | |||
| Early Cretaceous | Albian | Late Albian | 100.5 | ||
| Middle Albian | 106.2 * | ||||
| Early Albian | 109.9 * | ||||
| Aptian | Late Aptian | 113 | |||
| Early Aptian | 119.5 * | ||||
| Barremian | Late Barremian/Early Barremian | 121.4 | |||
| Hauterivian | Late Hauterivian/Early Hauterivian | 125.77 | |||
| Valanginian | Late Valanginian/Early Valanginian | 132.6 | |||
| Berriasian | Late Berriasian | 139.8 | |||
| Middle Berriasian | 140.6 * | ||||
| Early Berriasian | 142.7 * | ||||
| 145 | |||||