| 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 |
| details |
Cincinnatian |
|
Canada(Ontario) |
Eller,E.R. A review of Hinde's Annelid jaws from the Cincinnatian of Canada |
1967 |
| details |
Middle Frasnian |
|
France(Garonne,Haute) |
Taugourdeau,P. Scolecodonts of the Frasnian of Boulogne |
1971 |
| details |
Late Ordovician |
|
North America |
Taugourdeau,P. Scolecodont dispersa |
1978 |
| details |
Late Ordovician |
|
Europe |
Taugourdeau,P. Scolecodont dispersa |
1978 |
| details |
Middle Gothlandian |
|
North America |
Taugourdeau,P. Scolecodont dispersa |
1978 |
| details |
Middle Gothlandian |
|
Europe |
Taugourdeau,P. Scolecodont dispersa |
1978 |