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
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
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
M. Freudenthal. 2006. Mammal Paleogene zones. personal communication view
F. F. Steininger, W. A. Berggren, D. V. Kent, R. L. Bernor, S. Sen and J. Agusti. 1996. Circum-Mediterranean Neogene (Miocene and Pliocene) marine-continental chronologic correlations of European mammal units. The Evolution of Western Eurasian Neogene Mammal Faunas (eds. R. L. Bernor, V. Fahlbusch, and H.-W. Mittmann) view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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.

This timescale is used in the definition of 126710 collections

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International Chronostratigraphic Timescale			Mammal Paleogene Zones		Cenozoic Subepochs
Paleogene	Oligocene	Chattian	MP 30/MP 29/MP 28/MP 27/MP 26	MP 25	Late Oligocene	23.03
	Oligocene	Rupelian	MP 24/MP 23/MP 22/MP 21	MP 25	Early Oligocene	27.82
	Eocene	Priabonian	MP 20/MP 19/MP 18/MP 17B/MP 17A		Late Eocene	33.9
		Bartonian	MP 16		Middle Eocene	37.71
		Lutetian	MP 15/MP 14/MP 13/MP 12/MP 11		Middle Eocene	41.2
		Ypresian	MP 10/MP 8 + 9/MP 7		Early Eocene	47.8
	Paleocene	Thanetian	MP 6	MP 1 - 5	Late Paleocene	56
		Selandian			Middle Paleocene	59.2
		Danian			Early Paleocene	61.6
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