| original |
Late Devonian |
|
USSR(Tatar ASSR) |
Arkhangelskaya,A.D. New species of spores from the Voronezh (Upper Devonian) Zone of Western Tataria. |
1960 |
| details |
Carboniferous |
|
USSR(Tatar ASSR) |
Oshurkova,M.V. The classification of Carboniferous megaspores. (Taxonomy and Methods for the Study of Fossl Pollen and Spores. V.N. Saks and A.F. Khlonova, editors) |
1964 |
| details |
Givetian |
|
USSR(Kazakh SSR) |
Senkevitsch,M.A. et al. On fructifications, morphology and anatomy of Givetian Lepidophytes in Kazakhstan (USSR). |
1993 |