Obsolete Names for ICS Units

The interval definitions in this timescale are derived from the following sources:

  • 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
  • K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. 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
  • F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
  • M. Harzhauser and W. E. Piller. 2004. Integrated stratigraphy of the Sarmatian (Upper Middle Miocene) in the western Central Paratethys. Stratigraphy 1(1):65-86 view

There are 55 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 92 collections

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International Chronostratigraphic TimescaleObsolete Names for ICS UnitsCretaceous SubepochsTen Million Year BinsPermian Subages of GermanyCretaceous-Cenozoic of New ZealandCambrian of KazakhstanCentral Paratethys StagesPermian of China
QuaternaryHoloceneMeghalayanCenozoic 6WanganuiHaweran0
Northgrippian0.0042
Greenlandian0.0082
PleistoceneLate Pleistocene0.0117
Chibanian0.129
Castlecliffian0.34
Calabrian0.774
Nukumaruan1.63
Gelasian1.8
Mangapanian2.4
NeogenePliocenePiacenzianTertiary †2.58
Waipipian3
Zanclean3.6
Opoitian3.7
MioceneMessinianTaranakiKapitean5.333
Tongaporutuan7.2
TortonianPannonian7.246
SouthlandWaiauan11.04
SerravallianCenozoic 5Sarmatian11.63
Badenian12.8 *
Lillburnian13.05
Langhian13.82
Clifdenian15.1
PareoraAltonian15.9
Burdigalian15.98
Otaian18.7
Aquitanian20.44
LandonWaitakian21.7
PaleogeneOligoceneChattianCenozoic 423.03
Duntroonian25.2
Whaingaroan27.3
Rupelian27.82
EocenePriabonianCenozoic 333.9
ArnoldRunangan34.6
Kaiatan36.7
Bartonian37.71
Bortonian39.1
LutetianCenozoic 241.2
DannevirkePorangan42.6
Heretaungan45.7
Ypresian47.8
Mangaorapan48.9
Waipawan52
PaleoceneThanetianCenozoic 1Teurian56
Selandian59.2
Danian61.6
CretaceousLate CretaceousMaastrichtianSenonianCretaceous 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 CretaceousAlbianGallicCretaceous 4100.5
Urutawan103.3
TaitaiKorangan108.4
AptianCretaceous 3113
117.5
BarremianCretaceous 2121.4
HauterivianNeocomian125.77
ValanginianCretaceous 1132.6
Berriasian139.8
JurassicLate JurassicTithonianJurassic 6145
KimmeridgianJurassic 5149.2
Oxfordian154.8
Middle JurassicCallovian161.5
BathonianJurassic 4165.3
Bajocian168.2
AalenianJurassic 3170.9
Early JurassicToarcian174.7
PliensbachianJurassic 2184.2
SinemurianJurassic 1192.9
Hettangian199.5
TriassicLate TriassicRhaetianTriassic 4201.4
Norian208.5
CarnianTriassic 3227
Middle TriassicLadinianTriassic 2237
Anisian242
Early TriassicOlenekianTriassic 1247.2
Induan251.2
PermianLopingianChanghsingianPermian 4BuntsandsteinMeishanian251.902
Baoqingian253.4 *
WuchiapingianLongtanian †Laoshanian254.14
Laibinian257.7 *
GuadalupianCapitanianOhre/AllerLengwuan259.51
WordianLeineKuhfengian264.28
RoadianPermian 3266.9
CisuralianKungurianPermian 2Luodianian273.01
Artinskian283.5
Longlinian285.4 *
Sakmarian290.1
AsselianPermian 1Zisongian293.52
CarboniferousPennsylvanianGzhelianCarboniferous 5298.9
300.1
Kasimovian303.7
MoscovianCarboniferous 4307
Bashkirian315.2
MississippianSerpukhovianCarboniferous 3323.2
ViseanCarboniferous 2330.9
TournaisianCarboniferous 1346.7
DevonianLate DevonianFamennianDevonian 5358.9
FrasnianDevonian 4372.2
Middle DevonianGivetianDevonian 3382.7
Eifelian387.7
Early DevonianEmsianDevonian 2393.3
PragianDevonian 1407.6
Lochkovian410.8
SilurianPridoliSilurian 2419.2
LudlowLudfordian423
Gorstian425.6
WenlockHomerian427.4
Sheinwoodian430.5
LlandoveryTelychianSilurian 1433.4
Aeronian438.5
Rhuddanian440.8
OrdovicianLate OrdovicianHirnantianOrdovician 5443.8
Katian445.2
SandbianOrdovician 4453
Middle OrdovicianDarriwilianOrdovician 3458.4
DapingianOrdovician 2467.3
Early OrdovicianFloian470
TremadocianOrdovician 1Ungurian477.7
CambrianFurongianStage 10Cambrian 5Batyrbaian485.4
Jiangshanian489.5
Aksaian490.7 *
Sakian492.2 *
Paibian494
MiaolingianGuzhangianSeries 3 †Cambrian 4Ayusokkanian497
499.5
DrumianZhanaarykian500.5
Tuesaian503
WuliuanStage 5 †Cambrian 3504.5
505.3
Series 2Stage 4509
Toyonian510 *
Botomian512.5 *
Stage 3Cambrian 2514
Atdabanian515.6 *
TerreneuvianStage 2Tommotian521
525.5
FortunianCambrian 1529
538.8