467.3 - 458.4 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 6 timescales which overlap this one. show

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

This interval is used in the definition of 454 collections

A total of 3098 collections with 18056 occurrences lie within this time span