477.1 - 469.4 Ma

The definition of this interval in the timescale Ordovician of Ibero-Bohemia 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

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

• International Chronostratigraphic Timescale: Middle Ordovician epoch, Early Ordovician epoch, Dapingian age, Floian age
• Ordovician of Britain: Arenig epoch, Whitlandian age, Fennian age, Moridunian age
• Ordovician of the Baltic: Latorp age, Saka age, Langevoja age, Oeland epoch, Vaana age, Valaste age, Billingen age, Hunderum age, Volkhov age, Hunneberg age
• Ordovician of Ibero-Bohemia: Arenigian age
• Ordovician of Australia: Yapeenian age, Bendigonian age, Chewtonian age, Castlemainian age, Lancefieldian age
• Ordovician of China: Dawan age, Hunjiang age, Yiyangian age, Ningkuo age, Daobaowan age
• Ordovician of North America: Whiterockian epoch, Rangerian age, Chazyan age, Marmor age, Tulean age, Cassinian age, Jeffersonian age, Canadian age, Blackhillsian age, Ibexian epoch

This interval is no longer in current use

This interval is used in the definition of 11 collections

A total of 2188 collections with 11823 occurrences lie within this time span