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. A. Lillegraven and M. C. McKenna. 1986. Fossil mammals from the "Mesaverde" Formation (Late Cretaceous, Judithian) of the Bighorn and Wind River basins, Wyoming, with definitions of Late Cretaceous North American Land-Mammal "Ages". American Museum Novitates 2840:1-68 view
  • J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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
  • 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

This timescale is used in the definition of 126710 collections

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International Chronostratigraphic TimescalePaleogene Mammal Ages of AsiaMammal Paleogene ZonesCenozoic Subepochs
PaleogeneOligoceneChattianTabenbulakianHsandagolianMP 30/MP 29/MP 28/MP 27/MP 26MP 25Late Oligocene23.03
RupelianKekeamuanMP 24/MP 23/MP 22/MP 21Early Oligocene27.82
EocenePriabonianHouldjinian/Ergilian/UlangochuianMP 20/MP 19/MP 18/MP 17B/MP 17ALate Eocene33.9
BartonianSharamurunian/Irdinmanhan/ArshantanMP 16Middle Eocene37.71
LutetianMP 15/MP 14/MP 13/MP 12/MP 1141.2
YpresianBumbanianMP 10/MP 8 + 9/MP 7Early Eocene47.8
PaleoceneThanetianGashatanMP 6MP 1 - 5Late Paleocene56
SelandianMiddle Paleocene59.2
DanianEarly Paleocene61.6
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