| original |
Westphalian C |
|
Czechoslovakia |
KalibovЎ,M. Valvisisporites (Ibrahim 1933) Potonie and Kremp,1954, (Triletes auritus (Zerndt 1930, Type 11 Zerndt), and its species in the Bohemia Permo - Carboniferous. |
1959 |
| details |
Westphalian A |
Westphalian D |
Poland |
Zoldani,Z. A taxonomic and stratigraphical study of the genus Valvisisporites from the Carboniferous of the Lublin District. |
1966 |
| details |
Westphalian C |
|
Czechoslovakia |
KalibovЎ-KaiserovЎ,M. A study of megaspores from the Nyrany Measures (Westphalian D) of the Bohemian Carboniferous. |
1967 |
| details |
Westphalian C |
|
Poland |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |