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. O. Woodburne. 1987. A prospectus of the North American Mammal Ages. In: Woodburne, M. O. (ed.), Cenozoic Mammals of North America. University of California Press, Berkelery, CA 285-290 view
  • J. Alroy. 2000. New methods for quantifying macroevolutionary patterns and processes. Paleobiology 26(4):707-733 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, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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
  • 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

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 125993 collections

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International Chronostratigraphic TimescaleNorth American Mammal Subages/ZonesTen Million Year BinsEuropean Faunal UnitsCretaceous-Cenozoic of New Zealand
QuaternaryHoloceneMeghalayanCenozoic 6WanganuiHaweran0
Northgrippian0.0042
Greenlandian0.0082
PleistoceneLate PleistoceneSheridanian0.0117
Chibanian0.129
Cudahyan/Sappan0.21
Castlecliffian0.34
Calabrian0.774
Senecan/Rexroadian1.4
Nukumaruan1.63
Gelasian1.8
Mangapanian2.4
NeogenePliocenePiacenzianVillanyian2.58
Waipipian3
Ruscinian3.1 *
Zanclean3.6
Opoitian3.7
Late Hemphillian/late Early Hemphillian/early Early Hemphillian4.7
MioceneMessinianTurolianTaranakiKapitean5.333
Tongaporutuan7.2
Tortonian7.246
Vallesian8.7
Late Clarendonian/Early Clarendonian9.4
SouthlandWaiauan11.04
SerravallianCenozoic 5Astaracian11.63
late Late Barstovian/early Late Barstovian/Early Barstovian12.5
Lillburnian13.05
Langhian13.82
Clifdenian15.1
PareoraAltonian15.9
BurdigalianOrleanian15.98
Late Hemingfordian/Early Hemingfordian16.3
late Late Arikareean/early Late Arikareean/late Early Arikareean/early Early ArikareeanHarrisonian18.5
Otaian18.7
Agenian20
Aquitanian20.44
LandonWaitakian21.7
PaleogeneOligoceneChattianCenozoic 423.03
Monroecreekian23.1 *
Geringian24.7 *
Duntroonian25.2
Whaingaroan27.3
Rupelian27.82
29.5
EocenePriabonianLate Chadronian/Middle Chadronian/Early ChadronianCenozoic 333.9
ArnoldRunangan34.6
Kaiatan36.7
37
Bartonian37.71
Bortonian39.1
Late Uintan/Early Uintan39.7
LutetianCenozoic 241.2
DannevirkePorangan42.6
Heretaungan45.7
Twinbuttean/Blacksforkian/Gardnerbuttian46.2
Ypresian47.8
Mangaorapan48.9
Lostcabinian/Lysitean/Graybullian/Sandcouleean50.5
Waipawan52
Cf3/Cf2/Cf154.9
PaleoceneThanetianCenozoic 1Teurian56
Ti6/Ti5/Ti4/Ti3/Ti2/Ti156.2
Selandian59.2
To3/To2/To160.9
Danian61.6
Pu3/Pu2/Pu163.8
CretaceousLate CretaceousMaastrichtianCretaceous 8MataHaumurian66
CampanianCretaceous 772.1
SantonianCretaceous 6Piripauan83.6
RaukumaraTeratan86.1
Coniacian86.3
Turonian89.8
Mangaotanean90.5
Arowhanan93.7
CenomanianCretaceous 593.9
ClarenceNgaterian95.2
Motuan99.5
Early CretaceousAlbianCretaceous 4100.5
Urutawan103.3
TaitaiKorangan108.4
AptianCretaceous 3113
117.5
BarremianCretaceous 2121.4
Hauterivian125.77
ValanginianCretaceous 1132.6
Berriasian139.8
145