| original |
Middle Devonian |
|
Illinois |
Collinson,C. et al. North American Paleozoic Chitinozoa |
1955 |
| details |
Llandeilian |
|
Algeria |
Deunff,J. et al. Palynoplanktonic correlation in the Cambro-Ordovician of the Sahara |
1961 |
| details |
Llandoverian |
|
Baltic |
Taugourdeau,P. Techniques of study, morphology and classification of chitinozoans. |
1966 |
| details |
Eifelian |
|
North America |
Taugourdeau,P. et al. Chitinozoans-Illustrated bibliographic analysis |
1967 |
| details |
Eifelian |
|
Asia |
Taugourdeau,P. et al. Chitinozoans-Illustrated bibliographic analysis |
1967 |
| details |
Ludlovian |
|
Sweden |
Laufeld,S. Silurian chitinozoa from Gotland. |
1974 |
| details |
Silurian |
|
France(Ille-et-Vilaine) |
Paris,F. The chitinozoa in the Early Devonian shales and limestones of Saine-Cenere. (In: Massif Armoricain, France. H.Lardeux, editor) |
1976 |