| original |
Late Gedinnian |
Early Siegenian |
China(Yunnan) |
Gao,L. Early Devonian spores and acritarchs from the Gujiatun Formation in Qujing, Yunnan. |
1984 |
| original |
Pridolian |
|
England(Shropshire) |
White,D.E. et al. The Pridoli Series in the Welsh Borderland and South-Central Wales. (In: A Global Standard for the Silurian System. C.H. Holland and M.G.Bassett, editors) |
1989 |
| original |
Early Downtonian |
|
Wales(Montgomeryshire) |
Fanning,U. et al. A review of in situ, spores in Silurian land plants. (In: Pollen and Spores, Patterns of Diversification. S.Blackmore and S.H.Barnes, editors) |
1991 |
| original |
Early Downtonian |
|
England(Herefordshire) |
Fanning,U. et al. A review of in situ, spores in Silurian land plants. (In: Pollen and Spores, Patterns of Diversification. S.Blackmore and S.H.Barnes, editors) |
1991 |