458.4 - 443.8 Ma
The definition of this interval in the timescale International Chronostratigraphic Timescale is taken from the following source:
- K. M. Cohen, S.C. Finney, P.L. Gibbard and J.-X. Fan. 2023. The ICS International Chronostratigraphic Chart v2023/09. view
There are intervals in 7 timescales which overlap this one. show
- International Chronostratigraphic Timescale: Hirnantian age, Sandbian age, Katian age
- Ordovician of Britain: Cautleyan age, Streffordian age, Pusgillian age, Caradoc epoch, Marshbrookian age, Soudleyan age, Aurelucian age, Longvillian age, Costonian age, Onnian age, Rawtheyan age, Ashgill epoch, Woolstonian age, Burrellian age, Cheneyan age, Harnagian age, Actonian age
- Ordovician of the Baltic: Uhaku age, Vormsi age, Nabala age, Johvi age, Rakvere age, Keila age, Harju epoch, Haljala age, Idavere age, Pirgu age, Aluoja age, Porkuni age, Oandu age, Viru epoch, Kukruse age
- Ordovician of Ibero-Bohemia: Zahorany age, Kralodvorian age, Letna age, Bohdalec age, Liben age, Kosovian age, Berounian age, Vinice age
- Ordovician of Australia: Bolindian age, Gisbornian age, Eastonian age
- Ordovician of China: Chientangkiangian age, Hanjiang age, Wufeng age, Shikou age, Neichianshanian age, Xiaoxita age
- Ordovician of North America: Trentonian age, Edenian age, Shermanian age, Turinian age, Richmondian age, Mohawkian epoch, Kirkfieldian age, Whiterockian epoch, Ashbyan age, Blackriveran age, Gamachian age, Franklinian age, Rocklandian age, Cincinnatian epoch, Chatfieldian age, Wildernessian age, Maysvillian age, Marmor age, Chazyan age, Canadian age
This interval is used in the definition of 610 collections
A total of 9929 collections with 72884 occurrences lie within this time span