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

This interval is used in the definition of 450 collections

A total of 3092 collections with 18032 occurrences lie within this time span