470 - 467.3 Ma

The definition of this interval in the timescale International Chronostratigraphic Timescale is taken from the following source:

• K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view

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

• International Chronostratigraphic Timescale: Middle Ordovician epoch
• Ordovician of Britain: Llanvirn epoch, Arenig epoch, Fennian age, Abereiddian age, Early Llanvirn age
• Ordovician of the Baltic: Hunderum age, Langevoja age, Volkhov age, Valaste age, Vaana age, Saka age, Oeland epoch, Billingen age
• Ordovician of Ibero-Bohemia: Oretanian age, Arenigian age, Klabava age
• Ordovician of Australia: Castlemainian age, Yapeenian age
• Ordovician of China: Ningkuo age, Hunjiang age, Dawan age, Daobaowan age
• Ordovician of North America: Whiterockian epoch, Canadian age, Marmor age, Chazyan age, Rangerian age

This interval is used in the definition of 185 collections

A total of 679 collections with 3576 occurrences lie within this time span