| original |
Ludlovian |
|
Sweden |
Laufeld,S. Silurian chitinozoa from Gotland. |
1974 |
| details |
Ludlovian |
|
Europe |
Jenkins,W.A.M. et al. Stratigraphic ranges of selected chitinozoa. |
1979 |
| details |
Late Homerian |
Early Bringewoodian |
England |
Aldridge,R.J. et al. Microfossil distribution in the Silurian of Britian and Ireland. |
1979 |
| details |
Late Homerian |
Early Bringewoodian |
Ireland |
Aldridge,R.J. et al. Microfossil distribution in the Silurian of Britian and Ireland. |
1979 |
| details |
Ludlovian |
|
England(Shropshire) |
Dorning,K.J. Silurian chitinozoa from the type Wenlock and Ludlow of Shropshire, England. |
1981 |
| details |
Gorstian |
|
Belgium |
Verniers,J. et al. The chitinozoan biostratigraphy of the Silurian of the RonquiĐres-Monstreux area (Brabant Massif, Belgium) |
2002 |