| original |
Early Wenlockian |
|
Poland |
Szaniawski,H. Jaw apparatuses of the Ordovician and Silurian polychaetes, from Nielnik borehole. |
1970 |
| details |
Frasnian |
|
Poland |
Szaniawski,H. et al. Polychaete jaw apparatuses and scolecodonts from the Upper Devonian of Poland. |
1973 |
| details |
Devonian |
|
Canada |
Jansonius,J. et al. Some Scolecodonts in organic association from Devonian strata of Western Canada |
1974 |
| details |
Richmondian |
|
Ohio |
Eriksson,M. Late Ordovician polychaetaspid polychaete annelids from the type Cincinnatian region, USA.(In: Ordovician from the Andes. G.L.Albanesi,M.S.Beresi,S.H.Peralta,editors) |
2003 |
| details |
Richmondian |
|
Kentucky |
Eriksson,M. Late Ordovician polychaetaspid polychaete annelids from the type Cincinnatian region, USA.(In: Ordovician from the Andes. G.L.Albanesi,M.S.Beresi,S.H.Peralta,editors) |
2003 |
| details |
Richmondian |
|
Indiana |
Eriksson,M. Late Ordovician polychaetaspid polychaete annelids from the type Cincinnatian region, USA.(In: Ordovician from the Andes. G.L.Albanesi,M.S.Beresi,S.H.Peralta,editors) |
2003 |