| original |
Ordovician |
|
USSR(Estonian SSR) |
Eisenack,A. The microfauna of the Ostseekalke. 1. Chitinozoa, Hystrichosphaeres. |
1965 |
| details |
Ashgillian |
Early Llandoverian |
Nd |
Jansonius,J. Systematics of the chitinozoa. |
1966 |
| details |
Nd |
|
Nd |
Tappan,H. Chitinozoan classification. |
1966 |
| details |
Late Caradocian |
Early Llandoverian |
Nd |
Jansonius,J. Systematics of the chitinozoa. |
1967 |
| details |
Llandeilian |
Llandoverian |
Nd |
Jansonius,J. Classification and stratigraphic application of chitinozoa. |
1970 |
| details |
Early Llanvirnian |
Late Ashgillian |
Nd |
Combaz,A. Stratigraphy of the chitinozoans. |
1972 |
| details |
Nd |
|
Nd |
Taugourdeau,P. Several systematic attributes proposed for chitinozoa. |
1981 |
| details |
Nd |
|
Nd |
Paris,F. et al. A revised chitinozoan classification |
1999 |