461.7 - 456.2 Ma

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

• W. B. Harland, R. L. Armstrong, A. V. Cox, L. E. Craig, A. G. Smith and D. G. Smith. 1990. A Geologic Time Scale 1989. view

The top and bottom ages have 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: Sandbian age, Middle Ordovician epoch, Late Ordovician epoch, Darriwilian age
• Ordovician of Britain: Early Llanvirn age, Burrellian age, Llandeilo age, Late Llanvirn age, Llandeilian age, Aurelucian age, Longvillian age, Llanvirn epoch, Abereiddian age, Early Llandeilo age, Caradoc epoch, Late Llandeilo age, Costonian age, Middle Llandeilo age, Harnagian age, Soudleyan age, Woolstonian age
• Ordovician of the Baltic: Lasnamagi age, Viru epoch, Aluoja age, Uhaku age, Aseri age, Kukruse age, Haljala age, Idavere age
• Ordovician of Ibero-Bohemia: Berounian age, Oretanian age, Dobrotivian age, Bohdalec age, Vinice age, Zahorany age, Liben age
• Ordovician of Australia: Gisbornian age
• Ordovician of China: Xiaoxita age, Guniu age, Hulo age, Neichianshanian age, Shikou age, Hanjiang age
• Ordovician of North America: Shermanian age, Ashbyan age, Trentonian age, Blackriveran age, Rocklandian age, Mohawkian epoch, Kirkfieldian age, Franklinian age, Wildernessian age, Whiterockian epoch, Canadian age, Marmor age, Chazyan age, Turinian age

This interval is no longer in current use

This interval is used in the definition of 2 collections

A total of 1230 collections with 9152 occurrences lie within this time span