| original |
Wenlockian |
|
Wales(Powys) |
Verniers,J. Chitinozoa biozonation and systematics of the Wenlock succession of the Builth Wells District, Wales, U.K. |
1998 |
| details |
Early Wenlockian |
Middle 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 |
| details |
Late Telychian |
Early Wenlockian |
Belgium |
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 |
| details |
Wenlockian |
|
Czechoslovakia(Bohemia) |
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 |
Late Telychian |
|
Belgium |
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 |
| details |
Telychian |
|
Wales(Powys) |
Mullins,G.L. et al. Integrated lower Silurian chitinozoan and graptolite biostratigraphy of Buttington Brick Pit, Wales. |
2002 |
| details |
Sheinwoodian |
|
Belgium |
Verniers,J. et al. The chitinozoan biostratigraphy of the Silurian of the RonquiĐres-Monstreux area (Brabant Massif, Belgium) |
2002 |