| details |
Early Permian |
Late Permian |
USSR(Pre-Urals) |
Lyuber,A.A. et al. Atlas of microspores and pollen of the Paleozoic of the USSR. |
1941 |
| details |
Carboniferous |
|
USSR(Urals) |
Bolkhovitina,N.A. Pollen of Conifers in Mesozoic deposits and its value for stratigraphy. |
1952 |
| details |
Carboniferous |
|
USSR(Krasnoyarsk Kray) |
Bolkhovitina,N.A. Pollen of Conifers in Mesozoic deposits and its value for stratigraphy. |
1952 |
| details |
Permian |
|
USSR |
Hart,G.F. The systematics and distribution of Permian miospores. |
1965 |
| details |
Permian |
|
Brazil |
Ybert,J.P. et al. A palynologic and petrographic study of some Coals from Southern Brazil. |
1971 |
| details |
Nd |
|
Nd |
Burjack,M.I.A. Palynological study of the Charqueadas Coalfield, Rio Grande do Sul, Brazil. |
1978 |