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. F. Steininger, W. A. Berggren, D. V. Kent, R. L. Bernor, S. Sen and J. Agusti. 1996. Circum-Mediterranean Neogene (Miocene and Pliocene) marine-continental chronologic correlations of European mammal units. The Evolution of Western Eurasian Neogene Mammal Faunas (eds. R. L. Bernor, V. Fahlbusch, and H.-W. Mittmann) 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.

Interval names marked with † are no longer in current use.

This timescale is used in the definition of 126149 collections

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International Chronostratigraphic TimescaleEuropean Faunal ZonesTen Million Year BinsCenozoic Subepochs
QuaternaryHoloceneMeghalayanCenozoic 60
Northgrippian0.0042
Greenlandian0.0082
PleistoceneLate PleistoceneLate Pleistocene0.0117
ChibanianMiddle Pleistocene0.129
CalabrianEarly Pleistocene0.774
GelasianMN 171.8
NeogenePliocenePiacenzianMN 16Late Pliocene2.58
MN 153.2
ZancleanEarly Pliocene3.6
MN 144.2
MN 134.9
MioceneMessinianLate Miocene5.333
TortonianMN 127.246
MN 117.75
MN 108.7
MN 99.7
MN 7 + 811.1
SerravallianCenozoic 5Middle Miocene11.63
MN 612.8 *
LanghianMN 513.82
BurdigalianMN 4Early Miocene15.98
MN 316.9
MN 220
Aquitanian20.44
MN 122.4
PaleogeneOligoceneChattianCenozoic 4Late Oligocene23.03
RupelianEarly Oligocene27.82
EocenePriabonianCenozoic 3Late Eocene33.9
BartonianMiddle Eocene37.71
LutetianCenozoic 241.2
YpresianEarly Eocene47.8
PaleoceneThanetianCenozoic 1Late Paleocene56
SelandianMiddle Paleocene59.2
DanianEarly Paleocene61.6
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