468 - 459.7 Ma

The definition of this interval in the timescale Ordovician of Ibero-Bohemia is taken from the following source:

• F. M. Gradstein, J. G. Ogg, M. D. Schmitz and G. M. Ogg. 2020. Geologic Time Scale 2020 view

The top age has been interpolated based on the differences between the ages for international timescale boundaries quoted in the source and the currently accepted ages for those boundaries.

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

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

This interval is used in the definition of 48 collections

A total of 2944 collections with 16736 occurrences lie within this time span