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
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 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
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 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 126701 collections

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International Chronostratigraphic Timescale			Obsolete Names for ICS Units	Ten Million Year Bins	Cenozoic Subepochs
						2.58
Paleogene	Oligocene	Chattian	Tertiary †	Cenozoic 4	Late Oligocene	23.03
	Oligocene	Rupelian		Cenozoic 4	Early Oligocene	27.82
	Eocene	Priabonian		Cenozoic 3	Late Eocene	33.9
		Bartonian		Cenozoic 3	Middle Eocene	37.71
		Lutetian		Cenozoic 2	Middle Eocene	41.2
		Ypresian		Cenozoic 2	Early Eocene	47.8
	Paleocene	Thanetian		Cenozoic 1	Late Paleocene	56
		Selandian			Middle Paleocene	59.2
		Danian			Early Paleocene	61.6
						66