458.9 - 457.5 Ma

The definition of this interval in the timescale Ordovician of the Baltic 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 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, Late Ordovician epoch, Darriwilian age, Middle Ordovician epoch
• Ordovician of Britain: Aurelucian age, Llanvirn epoch, Early Llandeilo age, Llandeilian age, Late Llanvirn age, Llandeilo age, Soudleyan age, Late Llandeilo age, Middle Llandeilo age, Harnagian age, Caradoc epoch, Costonian age
• Ordovician of the Baltic: Aluoja age, Viru epoch
• Ordovician of Ibero-Bohemia: Bohdalec age, Vinice age, Berounian age, Letna age, Liben age, Zahorany age, Dobrotivian age
• Ordovician of Australia: Gisbornian age
• Ordovician of China: Hulo age, Shikou age, Hanjiang age, Guniu age, Neichianshanian age, Xiaoxita age
• Ordovician of North America: Chazyan age, Canadian age, Whiterockian epoch, Marmor age

This interval is used in the definition of 203 collections

A total of 248 collections with 1865 occurrences lie within this time span