| original |
Late Caradocian |
Ashgillian |
Canada(Ontario) |
Jansonius,J. Morphology and classification of some chitinozoa |
1964 |
| details |
Caradocian |
Middle Ludlovian |
Nd |
Jansonius,J. Systematics of the chitinozoa. |
1966 |
| details |
Nd |
|
Nd |
Tappan,H. Chitinozoan classification. |
1966 |
| details |
Early Caradocian |
Middle Llandoverian |
Nd |
Jansonius,J. Systematics of the chitinozoa. |
1967 |
| details |
Middle Wenlockian |
Early Ludlovian |
Nd |
Jansonius,J. Systematics of the chitinozoa. |
1967 |
| details |
Ordovician |
|
Arabian Pen.States |
Hemer,D.O. Diagnostic palynological fossils from Arabian formations. |
1968 |
| details |
Llandeilian |
Llandoverian |
Canada(NWT) |
Jansonius,J. Classification and stratigraphic application of chitinozoa. |
1970 |
| details |
Caradocian |
Ashgillian |
Italy(Sardinia) |
Del Rio,M. et al. Discovery of chitinozoa from the Laconi Formation |
1978 |
| details |
Ordovician |
|
Europe |
Laufeld,S. Biogeography of Ordovician, Silurian, and Devonian chitinozoans. |
1979 |
| details |
Silurian |
|
Europe |
Laufeld,S. Biogeography of Ordovician, Silurian, and Devonian chitinozoans. |
1979 |
| details |
Ordovician |
|
North America |
Laufeld,S. Biogeography of Ordovician, Silurian, and Devonian chitinozoans. |
1979 |
| details |
Nd |
|
Nd |
Taugourdeau,P. Several systematic attributes proposed for chitinozoa. |
1981 |
| details |
Nd |
|
Nd |
Miller,M.A. Chitinozoa. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Late Caradocian |
Ashgillian |
Canada(Ontario) |
Paris,F. et al. A revised chitinozoan classification |
1999 |