| details |
Late Devonian |
|
Missouri |
Gupta,S. Palynology of Grassy Creek and Saverton Shales of Missouri. |
1965 |
| details |
Givetian |
|
China(Yunnan) |
Lu,L.-C. Middle Devonian microflora from Haickou Formation at Shijiapo in Zhanyi of Yunnan, China |
1988 |
| original |
Late Devonian |
|
Canada(Ontario) |
McGregor,D.C. Spores and other plant microfossils from selected Devonian sedimentary Formations of Canada |
1957 |
| original |
Frasnian |
|
Canada(NWT,Franklin) |
McGregor,D.C. Devonian spores from Melville Island, Canadian Arctic Archipelago. |
1960 |