| original |
Westphalian B |
|
Poland |
DybovЎ,S. et al. Microspores of the Upper Silesian Coal Measures. |
1957 |
| details |
Nd |
|
Nd |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 3 |
1960 |
| details |
Nd |
|
Nd |
Loboziak,S. The micro and megaspores of the western part of the Bassin Houiller of northern France, stratigraphic applicationsin the study of several boreholes. |
1969 |
| details |
Nd |
|
Nd |
Ravn,R.L. Paleobotanical relationships and stratigraphic importance of the Carboniferous miospora genus Vestispora and questionably allied genera |
1983 |