469.4 - 458.2 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. 2024. The ICS International Chronostratigraphic Chart v2024/12. International Commission on Stratigraphy view

There are intervals in 6 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Middle Ordovician epoch
• Ordovician of Britain: Early Llanvirn age, Llandeilo age, Middle Llandeilo age, Fennian age, Late Llanvirn age, Abereiddian age, Early Llandeilo age, Llandeilian age, Llanvirn epoch, Arenig epoch, Late Llandeilo age
• Ordovician of the Baltic: Viru epoch, Hunderum age, Volkhov age, Vaana age, Valaste age, Uhaku age, Aseri age, Oeland epoch, Aluoja age, Saka age, Lasnamagi age, Kunda age, Langevoja age
• Ordovician of Ibero-Bohemia: Dobrotivian age, Sarka age, Bohdalec age, Letna age, Liben age, Zahorany age, Arenigian age, Oretanian age, Berounian age, Vinice age
• Ordovician of China: Hulo age, Daobaowan age, Ningkuo age, Guniu age, Hunjiang age, Dawan age
• Ordovician of North America: Canadian age, Marmor age, Whiterockian epoch, Chazyan age

This interval is used in the definition of 496 collections

A total of 3349 collections with 19483 occurrences lie within this time span