PBDB Interval

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. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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
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

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 127245 collections

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International Chronostratigraphic Timescale			Carboniferous of Western Europe		Carbo-Permian of the Russian Platform
						287.6
						297.7
Carboniferous	Pennsylvanian	Gzhelian	Kuzel		Rusavkinian	298.9 *
			Stephanian	Stephanian C		300.3 *
				Stephanian B		300.9 *
				Stephanian A		301.4 *
		Kasimovian			Dorogomilovian	303.7
					Khamovnikian	304.8
				Cantabrian	Khamovnikian	305 *
					Krevyakinian	305.8 *
		Moscovian			Myachkovian	307
			Westphalian	Westphalian D	Myachkovian	307.4 *
				Westphalian D	Podolskian	308.9 *
				Westphalian C	Podolskian	309.8
					Kashirian	311.4 *
					Vereian	313.8
				Westphalian B	Vereian	314.6
					Melekessian	314.8
		Bashkirian			Melekessian	315.2
					Cheremshanian	316.9 *
				Westphalian A	Cheremshanian	317 *
				Westphalian A	Prikamian	318.6 *
			Namurian	Yeadonian	Prikamian	318.8 *
				Yeadonian	Severokeltmian	319.9 *
				Marsdenian	Severokeltmian	320.2 *
				Marsdenian	Krasnopolyanian	321.2 *
				Kinderscoutian	Krasnopolyanian	321.5 *
				Kinderscoutian	Voznesenian	321.9 *
				Alportian		322 *
				Chokierian		323.1 *
	Mississippian	Serpukhovian		Chokierian	Zapaltjubian	323.2
				Arnsbergian	Zapaltjubian	324 *
					Protvian	324.4 *
					Steshevian	326.8 *
				Pendleian	Steshevian	327.4 *
				Pendleian	Tarusian	329 *
		Visean	Warnantian	Brigantian †	Venevian	330.9
					Mikhailovian	331.9 *
					Aleksinian	333.7 *
					Tulian	335.8 *
			Livian	Asbian †	Tulian	336.3 *
			Livian	Asbian †	Bobrikian	339.9 *
			Moliniacian	Holkerian †/Arundian/Chadian	Bobrikian	340.2 *
			Moliniacian	Holkerian †/Arundian/Chadian	Radaevkian	343.4 *
		Tournaisian	Ivorian		Kosvian	346.7
					Kizelian	350.7 *
					Cherepetian	351.9 *
			Hastarian		Cherepetian	353.7 *
					Karakubian	354.4 *
					Upinian	356.3 *
					Malevkian	357.6 *
					Gumerovian	358 *
						358.9