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
  • A. G. Sennikov and V. K. Golubev. 2006. Vyazniki Biotic Assemblage of the Terminal Permian. Paleontological Journal 40(suppl. 4):S475-S481 view
  • F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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 names marked with † are no longer in current use.

This timescale is used in the definition of 126844 collections

Show more time

Show linear time

International Chronostratigraphic TimescalePermo-Triassic Subages of Eastern EuropeObsolete Carboniferous Ages of China
TriassicEarly TriassicOlenekianVokhmian247.2
Induan251.2
PermianLopingianChanghsingian251.902
WuchiapingianLate Vyatkian/Early Vyatkian254.14
GuadalupianCapitanianLate Severodvinian/Early Severodvinian259.51
WordianLate Urzhumian/Early Urzhumian264.28
RoadianLate Kazanian/Early Kazanian266.9
CisuralianKungurian273.01
Artinskian283.5
Sakmarian290.1
Asselian293.52
CarboniferousPennsylvanianGzhelianMapingian †298.9
Kasimovian303.7
305.9