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
  • M. Freudenthal. 2006. Mammal Paleogene zones. personal communication 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
  • J. I. Raine, A. G. Beu, A. F. Boyes, H. J. Campbell, R. A. Cooper, J. S. Crampton, M. P. Crundwell, C. J. Hollis, and H. E. G. Morgans. 2015. Revised Calibration of the New Zealand Geological Timescale: NZGT2015/1. GNS Science Report 2012(39) view
  • J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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 126163 collections

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International Chronostratigraphic TimescaleTen Million Year BinsMammal Paleogene ZonesCretaceous-Cenozoic of New ZealandPaleogene Mammal Ages of Asia
21.7
PaleogeneOligoceneChattianCenozoic 4MP 30/MP 29/MP 28/MP 27/MP 26MP 25LandonWaitakianTabenbulakianHsandagolian23.03
Duntroonian25.2
Whaingaroan27.3
RupelianMP 24/MP 23/MP 22/MP 21Kekeamuan27.82
EocenePriabonianCenozoic 3MP 20/MP 19/MP 18/MP 17B/MP 17AHouldjinian/Ergilian/Ulangochuian33.9
ArnoldRunangan34.6
Kaiatan36.7
BartonianMP 16Sharamurunian/Irdinmanhan/Arshantan37.71
Bortonian39.1
LutetianCenozoic 2MP 15/MP 14/MP 13/MP 12/MP 1141.2
DannevirkePorangan42.6
Heretaungan45.7
YpresianMP 10/MP 8 + 9/MP 7Bumbanian47.8
Mangaorapan48.9
Waipawan52
PaleoceneThanetianCenozoic 1MP 6MP 1 - 5TeurianGashatan56
Selandian59.2
Danian61.6
66