| original |
Middle Ordovician |
|
Poland |
Kielan-Jaworowska,Z. Polychaete jaw apparatuses from the Ordovician and Silurian of Poland and a comparison with modern forms. |
1966 |
| details |
Middle Ordovician |
|
Europe |
Taugourdeau,P. Scolecodont dispersa |
1978 |
| details |
Nd |
|
Nd |
Edgar,D.R. Polychaetes of the Lower and Middle Paleozoic. A multi-element analysis and a phylogenetic outline. |
1984 |
| details |
Middle Caradocian |
Late Ashgillian |
Estonia |
Hints,O. Ordovician eunicid polychaetes of Estonia and surrounding areas: review of their distribution and diversification. |
2000 |