Siberian Regional
33International timescale
Paleozoic
Permian
Cisuralian
Carboniferous
Pennsylvanian
Mississippian
Devonian
Late Devonian
Middle Devonian
Early Devonian
Silurian
Pridoli
Ludlow
Wenlock
Llandovery
Ordovician
Late Ordovician
Middle Ordovician
Early Ordovician
Cambrian
Furongian
Miaolingian
Series 2
Terreneuvian
Neoproterozoic
Ediacaran
Siberian Regional
Khorokytian
Kyglitassian
Solonchanian
Natalian
Khatynykhian
Ovlachanian
Chuguchanian
Kirinian
Bazovian
Khamamitian
Batyrbaian
Aksaian
Sakian
Ayusokanian
Mayan
Amgan
Toyonian
Botoman
Atdabanian
Tommotian
Nemakit-Daldynian
Vendian
