| details |
Late Westphalian C |
|
Belgium |
Pi©rart,P. Preliminary note on the megaspores of the Upper Westphalian C in the Belgian Campine. |
1957 |
| details |
Namurian |
Westphalian |
Belgium |
Pi©rart,P. Utilization of megaspores in Coal stratigraphy. |
1958 |
| details |
Late Westphalian B |
|
Belgium |
Pi©rart,P. Stratigraphic distribution of megaspores in the Limbourg-Meuse Coal Basin. comparison with the Limbourg Basin of the Nethrlands |
1964 |
| details |
Late Westphalian A |
|
Belgium |
Pi©rart,P. Associations of microspores and megaspores in an Upper Westphalian A Stratum (Beeringen, Seam 70) in Campine (Belgium). |
1968 |
| details |
Carboniferous |
|
Poland |
Jachowicz,A. Flora of the Carboniferous:Microflora |
1972 |