| original |
Late Llandeilian |
Caradocian |
France(Calvados) |
Rauscher,R. Ordovician chitinozoans from the May-sur-Orne (Calvados) Syncline |
1971 |
| details |
Llandeilian |
Caradocian |
France(Calvados) |
Rauscher,R. Micropaleontological and stratigraphic research in the Ordovician and Silurian in France. Study of the acritarchs, chitinozoans and spores. |
1973 |
| details |
Llanvirnian |
Llandeilian |
Morocco |
Rahmani,K. Palynologic study of Paleozoic (Ordovician, Silurian, Devonian) of the Rabat Region, (Oued Bou-Regreg), Morocco. |
1983 |
| details |
Arenigian |
|
China(Yunnan) |
Gao,L.D. Lower Ordovician chitinozoans from Wuding and Luquan, Yunnan Province. |
1985 |