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
  • J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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
  • 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.

This timescale is used in the definition of 126536 collections

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International Chronostratigraphic TimescalePaleogene Mammal Ages of AsiaTen Million Year BinsCenozoic Subepochs
PaleogeneOligoceneChattianTabenbulakianHsandagolianCenozoic 4Late Oligocene23.03
RupelianKekeamuanEarly Oligocene27.82
EocenePriabonianHouldjinian/Ergilian/UlangochuianCenozoic 3Late Eocene33.9
BartonianSharamurunian/Irdinmanhan/ArshantanMiddle Eocene37.71
LutetianCenozoic 241.2
YpresianBumbanianEarly Eocene47.8
PaleoceneThanetianGashatanCenozoic 1Late Paleocene56
SelandianMiddle Paleocene59.2
DanianEarly Paleocene61.6
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