| original |
Ludlovian |
|
Sweden |
Laufeld,S. Silurian chitinozoa from Gotland. |
1974 |
| details |
Early Ludlovian |
|
Europe |
Jenkins,W.A.M. et al. Stratigraphic ranges of selected chitinozoa. |
1979 |
| details |
Silurian |
|
Sweden |
Nestor,V.K. Correlation Fo the East-Baltic and Gotland Silurian by chitinozoans. |
1982 |
| details |
Silurian |
|
USSR(Estonian SSR) |
Nestor,V.K. Correlation Fo the East-Baltic and Gotland Silurian by chitinozoans. |
1982 |
| details |
Ludlovian |
|
USSR(Estonian SSR) |
Nestor,V. et al. Dating of the Wenlock Carbonate sequences in Estonian and stratigraphicheskie Pereryvy |
1990 |
| details |
Early Ludlovian |
|
Estonia |
Nestor,V. Biostratigraphy: Silurian chitinozoans |
1990 |
| details |
Nd |
|
Nd |
Paris,F. Chitinozoan biostratigraphy and palaeoecology. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |