| original |
Silurian |
|
Czechoslovakia |
Eisenack,A. Contribution to the study of chitinozoans. |
1972 |
| details |
Silurian |
|
USSR(Estonian SSR) |
Nestor,V.K. Correlation Fo the East-Baltic and Gotland Silurian by chitinozoans. |
1982 |
| details |
Lochkovian |
|
Czechoslovakia |
Paris,F. Chitinozoans. (In: The Lochkovian-Pragian boundary in the Lower Devonian of the Barrandian area (Czechoslovakia). I. Chlupac et al) |
1985 |
| details |
Ludlovian |
Pridolian |
USSR(Estonian SSR) |
Bassett,M.G. et al. The Baltic Region. (In: A Global Standard for the Silurian System. C.H. Holland and M.G.Bassett, editors) |
1989 |
| details |
Late Ludlovian |
Early Pridolian |
Estonia |
Nestor,V. Biostratigraphy: Silurian chitinozoans |
1990 |
| details |
Early Lochkovian |
|
USSR(Ukrainian SSR) |
Paris,F. et al. Chitinozoa of the Silurian-Devonian boundary sections in Podolia, Ukraine |
1996 |