PBDB Timescale

Ordovician of the Baltic

The interval definitions in this timescale are derived from the following sources:

F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 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
B. D. Webby. 1998. Steps toward a global standard for Ordovician stratigraphy. Newsletters in Stratigraphy 36:1-33 view
F. M. Gradstein, J. G. Ogg, and A. G. Smith. 2004. A Geologic Time Scale 2004 1-589 view

There are 14 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 3244 collections

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International Chronostratigraphic Timescale			Ordovician of the Baltic				Cambrian of China		Ordovician of Australia
Ordovician	Late Ordovician	Hirnantian	Harju	Porkuni					Bolindian	443.8
		Katian		Pirgu					Bolindian	445.2
				Pirgu					Eastonian	449 *
				Vormsi						449.6 *
				Nabala	Johvi †					450 *
			Viru	Rakvere						450.6 *
				Oandu					Gisbornian	452 *
		Sandbian		Keila	Idavere †					453
				Haljala						453.9
				Kukruse						456.4 *
				Uhaku	Aluoja †					457.5 *
	Middle Ordovician	Darriwilian		Uhaku					Darriwilian	458.4
				Lasnamagi						458.9 *
				Aseri						460.4 *
			Oeland	Kunda						462.9 *
				Kunda	Valaste †/Hunderum					464.3 *
				Volkhov		Langevoja †/Vaana/Saka				467.1 *
		Dapingian							Yapeenian	467.3
									Castlemainian	468.5 *
				Billingen					Castlemainian	469.3 *
	Early Ordovician	Floian							Chewtonian	470
					Latorp †				Chewtonian	470.1 *
									Bendigonian	471.8 *
									Lancefieldian	473.5 *
				Hunneberg						473.7 *
		Tremadocian		Hunneberg						477.7
				Varangu						481.3 *
				Pakerort						482.2 *
									Warendian	482.8 *
Cambrian	Furongian	Stage 10					Niuchehean	Taoyuanian †		485.4
										486.3 *
										486.5
		Jiangshanian					Jiangshanian			489.5
		Paibian					Paibian			494
		Paibian					Paibian	Waergangian †/Youshuanian		494.9 *
	Miaolingian	Guzhangian					Guzhangian	Wangcunian †		497
		Drumian					Drumian	Wangcunian †		500.5
		Wuliuan					Wuliuan/Taijangian			504.5
	Series 2	Stage 4					Duyunian			509
	Series 2	Stage 3					Nangaoian			514
	Terreneuvian	Stage 2					Meishucunian			521
		Fortunian					Meishucunian			529
		Fortunian					Jinnigian			530.7
										538.8