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
  • F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
  • F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
  • M. Kretzoi. 1942. Necroteuthis n. g. (Ceph. Dibr., Necroteuthidae N. F.) aus dem Oligozän von Budapest und das system der Dibranchiata. Földtani Közlöny 72:125-238 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
  • 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

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 127249 collections

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International Chronostratigraphic TimescaleCarboniferous SubepochsCarboniferous of North AmericaCarboniferous of Western EuropeCarbo-Permian of the Russian Platform
287.6
297.7
CarboniferousPennsylvanianGzhelianLate PennsylvanianVirgilianKuzelRusavkinian298.9 *
StephanianStephanian C300.3 *
Stephanian B300.9 *
Stephanian A301.4 *
KasimovianMissourianDorogomilovian303.7
Khamovnikian304.8
Cantabrian305 *
Krevyakinian305.8 *
Desmoinesian305.9 *
MoscovianMiddle PennsylvanianMyachkovian307
WestphalianWestphalian D307.4 *
Podolskian308.9 *
Westphalian C309.8
Kashirian311.4 *
Atokan312.7 *
Vereian313.8
Westphalian B314.6
Melekessian314.8
BashkirianEarly Pennsylvanian315.2
Cheremshanian316.9 *
Westphalian A317 *
Morrowan318.4 *
Prikamian318.6 *
NamurianYeadonian318.8 *
Severokeltmian319.9 *
Marsdenian320.2 *
Krasnopolyanian321.2 *
Kinderscoutian321.5 *
Voznesenian321.9 *
Alportian322 *
Chokierian323.1 *
MississippianSerpukhovianLate MississippianChesterianZapaltjubian323.2
Arnsbergian324 *
Protvian324.4 *
Steshevian326.8 *
Pendleian327.4 *
Tarusian329 *
ViseanMiddle MississippianWarnantianBrigantian †Venevian330.9
Mikhailovian331.9 *
Aleksinian333.7 *
MeramecianTulian335.8 *
LivianAsbian †336.3 *
Bobrikian339.9 *
MoliniacianHolkerian †/Arundian/Chadian340.2 *
Osagean343.1 *
Radaevkian343.4 *
TournaisianEarly MississippianIvorianKosvian346.7
Kizelian350.7 *
KinderhookianCherepetian351.9 *
Hastarian353.7 *
Karakubian354.4 *
Upinian356.3 *
Malevkian357.6 *
Gumerovian358 *
358.9