| details |
Early Visean |
Middle Visean |
USSR(Belorussian SSR) |
Golubtsov,V.K. Stratigraphy and Foraminifera of the Visean Stage in the Pripyat Depression. (In: Paleontology and Stratigraphy of the BSSR) |
1957 |
| details |
Early Visean |
|
USSR(Moscow Basin) |
Vanderflit,K.A. Paleopalynological grounds for the stratigraphic subdivision of Lower Carboniferous deposits of the North west part of the Moscow Basin. (In: Methods of Paleopalynological investigation. S.R.Samolovich, editors) |
1968 |
| details |
Early Visean |
Middle Visean |
China |
Gao,L. Carboniferous spore assemblages in China. (In: Biostratigraphy. P.K.Sutherland and W.L.Manger, editors) |
1984 |
| details |
Early Visean |
Middle Visean |
China(Kansu) |
Gao,L. Lower Carboniferous miospore zonation of Chouniugou Formation from Jingyuan, Gansu. |
1988 |