PBDB Interval

Johvi age

453 - 450 Ma

The definition of this interval in the timescale Ordovician of the Baltic is taken from the following source:

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

The top age has 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.

There are intervals in 7 timescales which overlap this one. show

This interval is no longer in current use

This interval is used in the definition of 127 collections

A total of 1849 collections with 14106 occurrences lie within this time span

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International Chronostratigraphic Timescale			Ordovician of the Baltic				Ordovician of Ibero-Bohemia
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 *
											485.4 *
											486.3
											486.5