original |
Middle Wenlockian |
Late Wenlockian |
USSR(Estonian SSR) |
Nestor,V. Chitinozoan Zonal Assemblages, (Wenlock, Estonia). |
1982 |
original |
Givetian |
|
Kentucky |
Wood,G.D. et al. Organic-walled microphytoplankton and chitinozoans from the Middle Devonian, (Givetian) Boyle Dolomite of Kentucky, USA. |
1985 |
original |
Givetian |
|
New York |
Wood,G.D. Some Middle Devonian, (Givetian), chitinozoans and acritarchs from New York State. Preliminary results. |
1986 |
original |
Early Llandoverian |
|
Estonia |
Nestor,V. Biostratigraphy: Silurian chitinozoans |
1990 |
details |
Wenlockian |
|
Wales(Powys) |
Verniers,J. Calibration of Chitinozoa versus graptolite biozonation in the Wenlock of Builth Wells district (Wales, U.K), compared with other areas in Avalonia and Baltica. |
1999 |
original |
Early Givetian |
|
|
Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
2002 |
original |
Early Givetian |
|
Paraguay |
Grahn,Y. et al. Middle and Upper Devonian Chitinozoan biostratigraphy of the Parana Basin in Brazil and Paraguay. |
2002 |