| 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 |
| original |
Late Devonian |
|
England(Gloucestershire) |
Dolby,G. et al. Palynological evidence concerning the Devonian Carboniferous boundary in the Mendips, England. |
1970 |
| original |
Westphalian B |
|
England |
Butterworth,M.A. et al. Miospores from the Westphalian A and B of northern England |
1988 |