| original |
Late Gedinnian |
Early Siegenian |
Poland |
Wrona,R.M. Upper Silurian-Lower Devonian chitinozoa from the subsurface of Southeastern Poland. |
1980 |
| details |
Late Lochkovian |
Emsian |
Canada(Quebec) |
Achab,A. et al. Chitinozoan assemblage from the third order transgressive-regressive cycles of the Upper Gaspe Limestones (Lower Devonian of eastern Canada) |
1997 |
| details |
Late Lochkovian |
Emsian |
Canada(Quebec) |
Achab,A. et al. Chitinozoan assemblage from the third order transgressive-regressive cycles of the Upper Gaspe Limestones (Lower Devonian of eastern Canada) |
1997 |