| details |
Harnagian |
Early Onnian |
Portugal |
Paris,F. Distribution of chitinozoans in the Louredo Formation, Upper Ordovician of the Bucaco Syncline, Portugal. |
1978 |
| details |
Caradocian |
|
Portugal |
Paris,F. Chitinozoans of the Louredo Formation, Upper Ordovician of the Bucaco Syncline, (Portugal). |
1979 |
| details |
Late Caradocian |
|
Spain |
Robardet,M. et al. The Summit of the Ordovician in the Centre of the Iberia Peninsula |
1980 |
| details |
Caradocian |
|
Europe |
Paris,F. The chitinozoans in the Paleozoic of Southwest Europe. |
1981 |