| details |
Ludlovian |
|
Sweden |
Laufeld,S. Silurian chitinozoa from Gotland. |
1974 |
| details |
Wenlockian |
|
England(Staffordshire) |
Eisenack,A. Microfossils with organic tests from Wenlock Stage of Dudley, England. |
1977 |
| details |
Homerian |
|
Wales |
Rombouts,L.P. Factors controlling the distribution of chitinozoa in the Gleedon Chronozone, (Wenlockian) of northern Europe. |
1982 |
| details |
Homerian |
|
Wales |
Rombouts,L.P. Factors controlling the distribution of chitinozoa in the Gleedon Chronozone, (Wenlockian) of northern Europe. |
1982 |
| details |
Ludlovian |
Early Pridolian |
Estonia |
Nestor,V. Biostratigraphy: Silurian chitinozoans |
1990 |
| details |
Ludlovian |
Early Pridolian |
Estonia |
Rubel,M. Biostratigraphy: Composite standard |
1990 |
| details |
Early Llandoverian |
|
Estonia |
Nestor,H. Locality 7:4 Ohesaare Cliff |
1990 |
| details |
Early Ludlovian |
Middle Ludlovian |
Sweden |
Grahn,Y. Upper Silurian (Upper Wenlock-Lower Pridoli) chitinozoa and biostratigraphy of Skane, Southern Sweden. |
1996 |