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
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, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 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
F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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.

This timescale is used in the definition of 126536 collections

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International Chronostratigraphic Timescale			Ten Million Year Bins	Cretaceous-Cenozoic of New Zealand		Mesozoic Subages
Cretaceous	Late Cretaceous	Maastrichtian	Cretaceous 8	Mata	Haumurian	Late Maastrichtian/Early Maastrichtian	66
		Campanian	Cretaceous 7		Haumurian	Late Campanian/Middle Campanian/Early Campanian	72.1
		Santonian	Cretaceous 6		Piripauan	Late Santonian/Middle Santonian/Early Santonian	83.6
		Santonian		Raukumara	Teratan	Late Santonian/Middle Santonian/Early Santonian	86.1
		Coniacian				Late Coniacian/Middle Coniacian/Early Coniacian	86.3
		Turonian				Late Turonian/Middle Turonian/Early Turonian	89.8
					Mangaotanean		90.5
					Arowhanan		93.7
		Cenomanian	Cretaceous 5		Arowhanan	Late Cenomanian/Middle Cenomanian/Early Cenomanian	93.9
				Clarence	Ngaterian		95.2
					Motuan		99.5
	Early Cretaceous	Albian	Cretaceous 4		Motuan	Late Albian	100.5
					Urutawan	Late Albian	103.3
					Urutawan	Middle Albian	106.2 *
				Taitai	Korangan	Middle Albian	108.4
						Early Albian	109.9 *
		Aptian	Cretaceous 3			Late Aptian	113
						Late Aptian	117.5
						Early Aptian	119.5 *
		Barremian	Cretaceous 2			Late Barremian/Early Barremian	121.4
		Hauterivian	Cretaceous 2			Late Hauterivian/Early Hauterivian	125.77
		Valanginian	Cretaceous 1			Late Valanginian/Early Valanginian	132.6
		Berriasian				Late Berriasian	139.8
						Middle Berriasian	140.6 *
						Early Berriasian	142.7 *
							145