| original |
Middle Ordovician |
Late Ordovician |
Oklahoma |
Wilson,L.R. et al. Chitinozoa in the Tulip Creek Formation, Simpson Group (Ordovician), of Oklahoma. |
1964 |
| details |
Arenigian |
Llandeilian |
USA |
Taugourdeau,P. Techniques of study, morphology and classification of chitinozoans. |
1966 |
| details |
Middle Ordovician |
|
North America |
Taugourdeau,P. et al. Chitinozoans-Illustrated bibliographic analysis |
1967 |
| details |
Middle Ordovician |
|
Asia |
Taugourdeau,P. et al. Chitinozoans-Illustrated bibliographic analysis |
1967 |
| details |
Middle Ordovician |
Late Ordovician |
Oklahoma |
Locquin,M.V. Thie Chitinomycetes of chitinozoa Paleozoic fossils |
1976 |
| details |
Early Ordovician |
|
Nd |
Jansonius,J. et al. Chitinozoa. |
1978 |
| details |
Silurian |
|
Africa(Sahara) |
Locquin,M.V. Two genera Hoegisphaera and Pterochitina to be changed from chitinozoa to chytridiomycetes. |
1979 |