| details |
Llandoverian |
|
Spain |
Casielles,J.M. et al. Discovery of chitinozoas and acritarchs in the Silurian Slates of Teverga (Asturias). |
1969 |
| details |
Scythian |
Anisian |
West Pakistan |
Sarjeant,W.A.S. Acritarchs and Tasmanitids from the Mianwali and Tredian Formations (Triassic) of the Salt and Surghar ranges, West Pakisan. |
1973 |
| details |
Late Ashgillian |
|
Sweden(Gotland) |
Tongiorgi,M. et al. Arenigian acritarchs from the Daping section (Yangtze Gorges area, Hubei Province, southern China) and their palaeogeographic significance. |
1995 |
| original |
Arenigian |
Ashgillian |
China(Hupei) |
Tongiorgi,M. et al. Arenigian acritarchs from the Daping section (Yangtze Gorges area, Hubei Province, southern China) and their palaeogeographic significance. |
1995 |