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
  • M. Freudenthal. 2006. Mammal Paleogene zones. personal communication view
  • F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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
  • 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.

This timescale is used in the definition of 126148 collections

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International Chronostratigraphic TimescaleMammal Paleogene ZonesTen Million Year BinsCretaceous-Cenozoic of New ZealandCenozoic Subepochs
21.7
PaleogeneOligoceneChattianMP 30/MP 29/MP 28/MP 27/MP 26MP 25Cenozoic 4LandonWaitakianLate Oligocene23.03
Duntroonian25.2
Whaingaroan27.3
RupelianMP 24/MP 23/MP 22/MP 21Early Oligocene27.82
EocenePriabonianMP 20/MP 19/MP 18/MP 17B/MP 17ACenozoic 3Late Eocene33.9
ArnoldRunangan34.6
Kaiatan36.7
BartonianMP 16Middle Eocene37.71
Bortonian39.1
LutetianMP 15/MP 14/MP 13/MP 12/MP 11Cenozoic 241.2
DannevirkePorangan42.6
Heretaungan45.7
YpresianMP 10/MP 8 + 9/MP 7Early Eocene47.8
Mangaorapan48.9
Waipawan52
PaleoceneThanetianMP 6MP 1 - 5Cenozoic 1TeurianLate Paleocene56
SelandianMiddle Paleocene59.2
DanianEarly Paleocene61.6
66