original |
Caradocian |
|
Portugal |
Paris,F. Chitinozoans of the Louredo Formation, Upper Ordovician of the Bucaco Syncline, (Portugal). |
1979 |
original |
Ashgillian |
|
Europe |
Paris,F. The chitinozoans in the Paleozoic of Southwest Europe. |
1981 |
original |
Late Wenlockian |
Early Ludlovian |
Belgium |
Verniers,J. The Silurian of the Mehaigne Valley, (Brabant Massif, Belgium) |
1981 |
original |
Middle Wenlockian |
Late Wenlockian |
Belgium |
Verniers,J. The Silurian chitinozoa of the Mehaigne area (Brabant Massif, Belgium). |
1982 |
original |
Late Wenlockian |
|
USSR(Estonian SSR) |
Nestor,V. Chitinozoan Zonal Assemblages, (Wenlock, Estonia). |
1982 |
original |
Late Telychian |
Early Sheinwoodian |
Czechoslovakia(Bohemia) |
Dufka,P. Lower Silurian chitinozoans of the Prague Basin (Barrandian, Czechoslovakia)-Preliminary results. |
1992 |
original |
Gorstian |
|
Belgium |
Verniers,J. et al. The chitinozoan biostratigraphy of the Silurian of the RonquiĐres-Monstreux area (Brabant Massif, Belgium) |
2002 |