| details |
Middle Tremadocian |
|
Canada(Quebec) |
Jansonius,J. et al. Scolecodonts 1. Descriptive terminology and revision of systematic nomenclature; 2.Lectotypes, new names for homonyms, Index of species. |
1971 |
| details |
Middle Ordovician |
|
North America |
Taugourdeau,P. Scolecodont dispersa |
1978 |
| details |
Ordovician |
|
Poland |
Kielan-Jaworowska,Z. On two Ordovician polychaete jaw apparatuses. |
1961 |
| details |
Ordovician |
|
Canada(Quebec) |
Eller,E.R. Scolecodonts from the Trenton series (Ordovician) of Ontario, Quebec and New York. |
1945 |
| original |
Middle Tremadocian |
|
Canada(Quebec) |
Eller,E.R. Scolecodonts from the Trenton series (Ordovician) of Ontario, Quebec and New York. |
1945 |