458.4 - 452 Ma

The definition of this interval in the timescale Ordovician of Australia 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 6 timescales which overlap this one. show

• International Chronostratigraphic Timescale: Sandbian age, Late Ordovician epoch, Katian age
• Ordovician of Britain: Soudleyan age, Woolstonian age, Longvillian age, Costonian age, Caradoc epoch, Burrellian age, Onnian age, Aurelucian age, Actonian age, Cheneyan age, Harnagian age, Marshbrookian age
• Ordovician of the Baltic: Kukruse age, Johvi age, Viru epoch, Aluoja age, Keila age, Haljala age, Oandu age, Idavere age, Uhaku age
• Ordovician of Ibero-Bohemia: Berounian age, Bohdalec age, Letna age, Vinice age, Zahorany age, Liben age
• Ordovician of China: Xiaoxita age, Shikou age, Hanjiang age, Neichianshanian age
• Ordovician of North America: Trentonian age, Shermanian age, Rocklandian age, Blackriveran age, Ashbyan age, Wildernessian age, Chazyan age, Whiterockian epoch, Turinian age, Franklinian age, Chatfieldian age, Mohawkian epoch, Kirkfieldian age, Marmor age, Canadian age

This interval is used in the definition of 59 collections

A total of 3899 collections with 33160 occurrences lie within this time span