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, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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
  • 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

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 126668 collections

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International Chronostratigraphic TimescaleCambrian of ChinaCambrian of KazakhstanCambrian of Australia
CambrianFurongianStage 10NiucheheanTaoyuanian †BatyrbaianDatsonian485.4
Payntonian486.8 *
JiangshanianJiangshanianIverian489.5
Aksaian490.7 *
Sakian492.2 *
PaibianPaibianIdamean494
Waergangian †/Youshuanian494.9 *
MiaolingianGuzhangianGuzhangianWangcunian †AyusokkanianMindyallan497
Boomerangian499
499.5
DrumianDrumianZhanaarykianUndillan500.5
TuesaianFloran503
WuliuanWuliuan/TaijangianTempletonian504.5
505.3
Ordian507.8 *
Series 2Stage 4Duyunian509
Toyonian510 *
510.8 *
Botomian512.5 *
Stage 3Nangaoian514
Atdabanian515.6 *
TerreneuvianStage 2MeishucunianTommotian521
525.5
Fortunian529
Jinnigian530.7
538.8