| original |
Late Champlainian |
Early Cincinnatian |
Canada(Quebec) |
Martin,F. Ordovician chitinozoa and acritarchs of the Saint-Laurent Platform, (Quebec and Southeast Ontario). |
1983 |
| original |
Late Champlainian |
|
Canada(Ontario) |
Martin,F. Ordovician chitinozoa and acritarchs of the Saint-Laurent Platform, (Quebec and Southeast Ontario). |
1983 |
| details |
Late Caradocian |
Early Ashgillian |
Canada(Quebec) |
Achab,A. Late Caradocian - Early Ashgillian chitinozoans of Quebec, Canada. |
1987 |
| details |
Early Ashgillian |
|
Canada(Quebec) |
Achab,A. Ordovician chitinozoan zonation of Quebec and Western Newfoundland. |
1989 |
| details |
Early Ashgillian |
|
Canada(Newfoundland) |
Achab,A. Ordovician chitinozoan zonation of Quebec and Western Newfoundland. |
1989 |