| original |
Late Frasnian |
|
Poland |
Szaniawski,H. et al. Polychaete jaw apparatuses and scolecodonts from the Upper Devonian of Poland. |
1973 |
| details |
Late Pliocene |
Pleistocene |
USSR(Urals) |
Chigurayeva,A.A. et al. Compositae pollen in the Upper Poliocene and Pleistocene strata of the Volga-Ural Region |
1983 |
| details |
Late Devonian |
|
Worldwide |
Taugourdeau,P. Importance of evolution of the dispersed scolecodonts, (Annelids) in the stocking of seas during Paleozoic times. |
1983 |
| details |
Nd |
|
Nd |
Szaniawski,H. Scolecodonts. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |