| details |
Ordovician |
Silurian |
Poland |
Szaniawski,H. Scolecodonts. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Llandeilian |
Early Ashgillian |
Poland |
Szaniawski,H. Jaw apparatuses of the Ordovician and Silurian polychaetes, from Nielnik borehole. |
1970 |
| original |
Late Caradocian |
|
Poland |
Kielan-Jaworowska,Z. New Ordovician genera of polychaete jaw apparatuses. |
1962 |
| details |
Late Caradocian |
|
Poland |
Kozur,H. A study on the classification of fossil Phyllodocida and Eunicida (polychaeta). |
1970 |
| details |
Nd |
|
Nd |
Kielan-Jaworowska,Z. Scolecodonts versus jaw apparatuses. |
1968 |