Hirnantian age
445.2 - 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
This interval is used in the definition of 485 collections
A total of 743 collections with 3960 occurrences lie within this time span
International Chronostratigraphic Timescale | Ordovician of the Baltic | ||||||
---|---|---|---|---|---|---|---|
Ordovician | Late Ordovician | Hirnantian | Harju | Porkuni | 443.8 | ||
Katian | Pirgu | 445.2 | |||||
Vormsi | 449.6 * | ||||||
Nabala | Johvi † | 450 * | |||||
Viru | Rakvere | 450.6 * | |||||
Oandu | 452 * | ||||||
Sandbian | Keila | Idavere † | 453 | ||||
Haljala | 453.9 | ||||||
Kukruse | 456.4 * | ||||||
Uhaku | Aluoja † | 457.5 * | |||||
Middle Ordovician | Darriwilian | 458.4 | |||||
Lasnamagi | 458.9 * | ||||||
Aseri | 460.4 * | ||||||
Oeland | Kunda | 462.9 * | |||||
Valaste †/Hunderum | 464.3 * | ||||||
Volkhov | Langevoja †/Vaana/Saka | 467.1 * | |||||
Dapingian | 467.3 | ||||||
Billingen | 469.3 * | ||||||
Early Ordovician | Floian | 470 | |||||
Latorp † | 470.1 * | ||||||
Hunneberg | 473.7 * | ||||||
Tremadocian | 477.7 | ||||||
Varangu | 481.3 * | ||||||
Pakerort | 482.2 * | ||||||
485.4 * | |||||||
486.3 | |||||||
486.5 |