| original |
Early Carboniferous |
|
Poland |
Pi©rart,P. The state of advancement of the systematics of Lageniculate megaspores. |
1978 |
| original |
Westphalian A |
|
Poland |
DybovЎ-Jachowiczowa,S. et al. Preliminary note on revision of Carboniferous megaspores with Gula. Principles of the classification. |
1979 |
| details |
Carboniferous |
|
Nd |
Braman,D.R. et al. The stratigraphic and geographic distribution of Carboniferous megaspores. |
1980 |
| details |
Early Mississippian |
|
Ohio |
DybovЎ-Jachowiczowa,S. et al. Revision of Carboniferous megaspores with Gula (Part Three) |
1987 |