457.5 - 453 Ma

The definition of this interval in the timescale Ordovician of the Baltic 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 bottom 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: Late Ordovician epoch, Sandbian age
• Ordovician of Britain: Marshbrookian age, Aurelucian age, Soudleyan age, Caradoc epoch, Longvillian age, Burrellian age, Onnian age, Costonian age, Actonian age, Harnagian age, Woolstonian age
• Ordovician of the Baltic: Kukruse age, Keila age, Haljala age, Viru epoch
• Ordovician of Ibero-Bohemia: Berounian age, Bohdalec age, Vinice age, Letna age, Zahorany age
• Ordovician of Australia: Gisbornian age
• Ordovician of China: Xiaoxita age, Neichianshanian age, Hanjiang age, Shikou age
• Ordovician of North America: Rocklandian age, Marmor age, Ashbyan age, Canadian age, Kirkfieldian age, Chatfieldian age, Shermanian age, Blackriveran age, Wildernessian age, Turinian age, Whiterockian epoch, Mohawkian epoch, Chazyan age, Franklinian age, Trentonian age

This interval is no longer in current use

This interval is used in the definition of 80 collections

A total of 3253 collections with 27544 occurrences lie within this time span