| details |
Strunian |
Early Tournaisian |
Canada(Saskatchewan) |
Playford,G. et al. Miospores and organic-walled microphytoplankton of Devonian-Carboniferous boundary beds, (Bakken Formation), southern Saskatchewan: A systematic and stratigraphic appraisal. |
1993 |
| original |
Early Mississippian |
|
Canada(Nova Scotia) |
Hacquebard,P.A. Plant spores in Coal from the Horton Group (Mississippian), of Nova Scotia. |
1957 |
| details |
Early Mississippian |
|
Canada(Nova Scotia) |
Playford,G. et al. Miospores and organic-walled microphytoplankton of Devonian-Carboniferous boundary beds, (Bakken Formation), southern Saskatchewan: A systematic and stratigraphic appraisal. |
1993 |