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

Show more time

Show linear time

International Chronostratigraphic Timescale			Ordovician of the Baltic				Ordovician of Ibero-Bohemia				Cambrian of North America
Ordovician	Late Ordovician	Hirnantian	Harju	Porkuni			Kosovian						443.8
		Katian		Pirgu			Kralodvorian	Bohdalec †					445.2
				Vormsi			Kralodvorian						449.6 *
				Vormsi			Berounian						449.7 *
				Nabala	Johvi †								450 *
			Viru	Rakvere									450.6 *
				Oandu									452 *
		Sandbian		Keila	Idavere †								453
				Haljala									453.9
				Haljala					Zahorany †/Vinice	Letna †			456.2 *
				Kukruse									456.4 *
				Uhaku	Aluoja †								457.5 *
								Liben †					458 *
	Middle Ordovician	Darriwilian											458.4
							Dobrotivian						458.5 *
				Lasnamagi			Dobrotivian						458.9 *
				Lasnamagi			Oretanian						459.7 *
				Aseri									460.4 *
				Aseri				Sarka †					461.7 *
			Oeland	Kunda									462.9 *
				Kunda	Valaste †/Hunderum								464.3 *
				Volkhov		Langevoja †/Vaana/Saka							467.1 *
		Dapingian						Klabava †					467.3
							Arenigian						468
				Billingen									469.3 *
	Early Ordovician	Floian											470
					Latorp †								470.1 *
				Hunneberg									473.7 *
		Tremadocian		Hunneberg			Tremadocian						477.7
				Varangu									481.3 *
				Pakerort									482.2 *
Cambrian	Furongian	Stage 10		Pakerort								Franconian †/Dresbachian/Millardan	485.4
													486.3 *
													486.5
											Sunwaptan		487.5
		Jiangshanian									Sunwaptan		489.5
		Jiangshanian									Steptoean		493 *
		Paibian									Steptoean		494
	Miaolingian	Guzhangian									Marjumian	Albertian †	497
		Drumian									Marjumian		500.5
		Wuliuan									Topazan		504.5
		Wuliuan									Delamaran		506.5
	Series 2	Stage 4									Delamaran	Waucoban †	509
		Stage 4									Dyeran		511 *
		Stage 3									Dyeran		514
											Montezuman		514.8 *
											Begadean		519.9 *
	Terreneuvian	Stage 2											521
	Terreneuvian	Fortunian											529
													538.8