| details |
Wenlockian |
Frasnian |
Africa(Sahara) |
Taugourdeau,P. The Scolecodonts of Silurian, Devonian and Carboniferous of the Saharian Probes, stratigraphy and systematics |
1968 |
| details |
Middle Frasnian |
|
France(Garonne,Haute) |
Taugourdeau,P. Scolecodonts of the Frasnian of Boulogne |
1971 |
| details |
Middle Devonian |
|
North America |
Taugourdeau,P. Scolecodont dispersa |
1978 |
| details |
Nd |
|
Nd |
Eisenack,A. Contributions to Annelid research |
1975 |
| details |
Nd |
|
Nd |
Eisenack,A. Contributions to Annelid research |
1975 |
| original |
Devonian |
|
Michigan |
Eller,E.R. Scolecodonts from Well samples of the Dundee, Devonian of Michigan |
1961 |