| details |
Morrowan |
Desmoinesian |
Iowa |
Ravn,R.L. Palynostratigraphy of the Lower and Middle Pennsylvanian Coals of Iowa |
1986 |
| details |
Permian |
|
USSR(Kemerovskaya) |
Andreeva,E.M. Spore-pollen characteristics of the Balokhonka and Erunakova Suites of the Kuznets Basin. (In: Atlas of guide forms of fossil fauna and flora of Permian deposits of the Kuznets Basin.) |
1956 |
| details |
Permian |
|
USSR(Siberia) |
Odintsova,M.M. et al. On the age of the Almazon Layers of the southern slope of the Anabarsk Anticline. |
1969 |
| details |
Tournaisian |
Visean |
USSR(European) |
Lyuber,A.A. et al. Classification and stratigraphic value of spores of some Carboniferous Coal deposits in the USSR. |
1938 |