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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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
J. I. Raine, A. G. Beu, A. F. Boyes, H. J. Campbell, R. A. Cooper, J. S. Crampton, M. P. Crundwell, C. J. Hollis, and H. E. G. Morgans. 2015. Revised Calibration of the New Zealand Geological Timescale: NZGT2015/1. GNS Science Report 2012(39) view
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view
F. M. Gradstein, F. P. Agterberg, J. G. Ogg, J. Hardenbol, P. Van Veen, J. Thierry, and Z. Huang. 1995. A Triassic, Jurassic, and Cretaceous time scale. SEPM Special Publication 54 view
J. Palfy, P. L. Smith, and J. K. Mortensen. 2000. A U-Pb and 40Ar/39Ar time scale for the Jurassic. Canadian Journal of Earth Sciences 37(6):923-944 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 126710 collections

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International Chronostratigraphic Timescale			Permian-Jurassic of New Zealand		Ten Million Year Bins	Mesozoic Subages
Jurassic	Late Jurassic	Tithonian	Oteke	Puaroan	Jurassic 6	Late Tithonian	Middle Tithonian	145
		Tithonian			Jurassic 6	Early Tithonian	Middle Tithonian	146.3 *
		Kimmeridgian			Jurassic 5	Late Kimmeridgian		149.2
			Kawhia	Ohauan		Late Kimmeridgian		150
				Ohauan		Early Kimmeridgian		152.2 *
				Heterian		Early Kimmeridgian		154.5
		Oxfordian				Late Oxfordian	Middle Oxfordian/Early Oxfordian	154.8
		Oxfordian					Middle Oxfordian/Early Oxfordian	157.9 *
	Middle Jurassic	Callovian				Late Callovian/Middle Callovian/Early Callovian		161.5
		Callovian		Temaikan		Late Callovian/Middle Callovian/Early Callovian		164.3
		Bathonian			Jurassic 4	Late Bathonian/Middle Bathonian/Early Bathonian		165.3
		Bajocian				Late Bajocian		168.2
		Bajocian				Early Bajocian		168.6 *
		Aalenian			Jurassic 3	Late Aalenian/Middle Aalenian/Early Aalenian		170.9
	Early Jurassic	Toarcian				Late Toarcian		174.7
			Herangi	Ururoan		Late Toarcian		176
						Middle Toarcian		180.4 *
						Early Toarcian		182.9 *
		Pliensbachian			Jurassic 2	Late Pliensbachian/Early Pliensbachian		184.2
		Pliensbachian		Aratauran	Jurassic 2	Late Pliensbachian/Early Pliensbachian		188.9
		Sinemurian			Jurassic 1	Late Sinemurian/Early Sinemurian		192.9
		Hettangian			Jurassic 1	Late Hettangian/Middle Hettangian/Early Hettangian		199.5
								201.4