| original |
Early Edenian |
|
Canada(Ontario) |
Melchin,M.J. et al. Evolutionary lineages in some Ordovician Chitinozoa. |
1985 |
| details |
Late Caradocian |
|
Canada(Quebec) |
Achab,A. Late Caradocian - Early Ashgillian chitinozoans of Quebec, Canada. |
1987 |
| details |
Late Caradocian |
|
Canada(Quebec) |
Achab,A. Ordovician chitinozoan zonation of Quebec and Western Newfoundland. |
1989 |
| details |
Late Caradocian |
|
Canada(Newfoundland) |
Achab,A. Ordovician chitinozoan zonation of Quebec and Western Newfoundland. |
1989 |
| details |
Nd |
|
Nd |
Zaslavskaya,N.M. On the morphology and systematics of chitinozoa. (In: Problematic Fossils of the USSR. B.S.Sokolov, editors) |
1990 |
| details |
Nd |
|
Nd |
Miller,M.A. Chitinozoa. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Late Ordovician |
|
Nevada |
Soufiane,A. et al. Upper Ordovician and Lower Silurian chitinozoans from central Nevada and Arctic Canada. |
2000 |
| details |
Late Ordovician |
|
Canada(Arctic) |
Soufiane,A. et al. Upper Ordovician and Lower Silurian chitinozoans from central Nevada and Arctic Canada. |
2000 |