| details |
Nd |
|
Nd |
Szaniawski,H. Scolecodonts. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |
| details |
Late Ordovician |
|
North America |
Taugourdeau,P. Scolecodont dispersa |
1978 |
| details |
Cincinnatian |
|
Canada(Ontario) |
Eller,E.R. A review of Hinde's Annelid jaws from the Cincinnatian of Canada |
1967 |
| original |
Cambrian |
Silurian |
Canada(Ontario) |
Hinde,G.J. On Annelid jaws from the Cambro-Silurian, Silurian and Devonian Formations in Canada and from the Lower Carboniferous in Scotland |
1879 |