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
J. Meng and M. C. McKenna. 1998. Faunal turnovers of Paleogene mammals from the Mongolian Plateau. Nature 394:364-367 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 126637 collections

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International Chronostratigraphic Timescale			Ten Million Year Bins	Carboniferous of Western Europe		Carbo-Permian of the Russian Platform
							287.6
							297.7
Carboniferous	Pennsylvanian	Gzhelian	Carboniferous 5	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	Carboniferous 4			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	Carboniferous 3		Chokierian	Zapaltjubian	323.2
					Arnsbergian	Zapaltjubian	324 *
						Protvian	324.4 *
						Steshevian	326.8 *
					Pendleian	Steshevian	327.4 *
					Pendleian	Tarusian	329 *
		Visean	Carboniferous 2	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	Carboniferous 1	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