| details |
Late Devonian |
|
Iowa |
Szaniawski,H. et al. Hartmaniellidae-living fossils among polychaetes. |
1996 |
| details |
Frasnian |
|
Canada(Alberta) |
Jansonius,J. et al. Scolecodonts 1. Descriptive terminology and revision of systematic nomenclature; 2.Lectotypes, new names for homonyms, Index of species. |
1971 |
| details |
Early Famennian |
|
Iowa |
Kozur,H. A study on the classification of fossil Phyllodocida and Eunicida (polychaeta). |
1970 |
| details |
Devonian |
|
Canada |
Jansonius,J. et al. Some scolecodonts in organic association from Devonian strata of Western Canada. Correction. |
1975 |