| original |
Middle Ordovician |
|
Oklahoma |
Taugourdeau,P. Ordovician chitinozoans of the USA; Comparison with ancient faunas. |
1965 |
| details |
Late Arenigian |
Early Caradocian |
Europe |
Taugourdeau,P. Techniques of study, morphology and classification of chitinozoans. |
1966 |
| details |
Llandeilian |
Caradocian |
USA |
Taugourdeau,P. Techniques of study, morphology and classification of chitinozoans. |
1966 |
| details |
Silurian |
|
Baltic |
Taugourdeau,P. Techniques of study, morphology and classification of chitinozoans. |
1966 |
| details |
Arenigian |
|
France(Herault) |
Rauscher,R. Arenigian chitinozoans from Montagne Noire, (France). |
1968 |
| details |
Sheinwoodian |
|
Czechoslovakia(Bohemia) |
Dufka,P. Chitinozoans from the Sheinwoodian / Homerian boundary Beds (Wenlock) in the Prague Basin (Barrandian, Bohemia). |
1995 |