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

This interval is used in the definition of 450 collections

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