| details |
Middle Ordovician |
|
Europe |
Taugourdeau,P. Scolecodont dispersa |
1978 |
| original |
Middle Caradocian |
|
Poland |
Kielan-Jaworowska,Z. New Ordovician genera of polychaete jaw apparatuses. |
1962 |
| details |
Ordovician |
|
Poland |
Kielan-Jaworowska,Z. Polychaete jaw apparatuses from the Ordovician and Silurian of Poland and a comparison with modern forms. |
1966 |
| details |
Ordovician |
|
Poland |
Szaniawski,H. Scolecodonts. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Rakvere |
|
Estonia |
Hints,O. Late Viruan (Caradoc) polychaete jaws from North Estonia and the St. Petersburg region. |
1998 |
| details |
Rakvere |
|
Russia(St.Petersburg) |
Hints,O. Late Viruan (Caradoc) polychaete jaws from North Estonia and the St. Petersburg region. |
1998 |