| details |
Late Llanvirnian |
Llandoverian |
Nd |
Jansonius,J. Systematics of the chitinozoa. |
1966 |
| details |
Nd |
|
Nd |
Tappan,H. Chitinozoan classification. |
1966 |
| original |
Llandeilian |
|
France(Tarn-et-Garonne) |
Taugourdeau,P. Techniques of study, morphology and classification of chitinozoans. |
1966 |
| details |
Middle Llanvirnian |
Late Llandoverian |
Nd |
Jansonius,J. Systematics of the chitinozoa. |
1967 |
| details |
Llandeilian |
Llandoverian |
Canada(NWT) |
Jansonius,J. Classification and stratigraphic application of chitinozoa. |
1970 |
| details |
Ordovician |
|
Romania |
Beju,D. The present stage of the palynological researches concerning the Antecretaceous of Romania. |
1971 |
| details |
Llanvirnian |
|
Morocco |
Rahmani,K. Palynological study of the Paleozoic in the Region of Rabat, dating the Ordovician. |
1979 |
| details |
Llandoverian |
|
Ireland |
Smith,D.G. Progress in Irish Lower Palaeozoic palynology. |
1981 |
| details |
Nd |
|
Nd |
Taugourdeau,P. Several systematic attributes proposed for chitinozoa. |
1981 |
| details |
Llandeilian |
|
France(Tarn-et-Garonne) |
Paris,F. et al. A revised chitinozoan classification |
1999 |