| original |
Middle Siegenian |
Emsian |
Spain |
Cramer,F.H. Microplankton from three Palaeozoic formations in the Province of Leon, northwest Spain. |
1964 |
| details |
Middle Gedinnian |
Middle Emsian |
Europe |
Taugourdeau,P. Techniques of study, morphology and classification of chitinozoans. |
1966 |
| details |
Emsian |
|
Europe |
Taugourdeau,P. et al. Chitinozoans-Illustrated bibliographic analysis |
1967 |
| details |
Erian |
|
Canada(Ontario) |
Legault,J.A. Chitinozoa and acritarcha of the Hamilton Group (Middle Devonian) of Southern Ontario |
1971 |
| details |
Middle Devonian |
|
Canada(Ontario) |
Legault,J.A. Chitinozoa and acritarcha of the Hamilton Formation, (Middle Devonian), southwestern Ontario. |
1973 |
| details |
Nd |
|
Nd |
Locquin,M.V. Thie Chitinomycetes of chitinozoa Paleozoic fossils |
1976 |
| details |
Early Paleozoic |
|
Turkey |
Sinanoglu,E. Chitinozoa. |
1978 |