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
  • 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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
  • F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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 126699 collections

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International Chronostratigraphic TimescaleCarboniferous of North AmericaTen Million Year BinsCarbo-Permian of the Russian Platform
287.6
CarboniferousPennsylvanianGzhelianVirgilianCarboniferous 5Rusavkinian298.9 *
KasimovianMissourianDorogomilovian303.7
Khamovnikian304.8
Krevyakinian305.8 *
Desmoinesian305.9 *
MoscovianCarboniferous 4Myachkovian307
Podolskian308.9 *
Kashirian311.4 *
Atokan312.7 *
Vereian313.8
Melekessian314.8
Bashkirian315.2
Cheremshanian316.9 *
Morrowan318.4 *
Prikamian318.6 *
Severokeltmian319.9 *
Krasnopolyanian321.2 *
Voznesenian321.9 *
MississippianSerpukhovianChesterianCarboniferous 3Zapaltjubian323.2
Protvian324.4 *
Steshevian326.8 *
Tarusian329 *
ViseanCarboniferous 2Venevian330.9
Mikhailovian331.9 *
Aleksinian333.7 *
MeramecianTulian335.8 *
Bobrikian339.9 *
Osagean343.1 *
Radaevkian343.4 *
TournaisianCarboniferous 1Kosvian346.7
Kizelian350.7 *
KinderhookianCherepetian351.9 *
Karakubian354.4 *
Upinian356.3 *
Malevkian357.6 *
Gumerovian358 *
358.9