| details |
Middle Pennsylvanian |
|
Illinois |
Gastaldo,R.A. An ultrastructural and taxonomic study of Valvisporites auritus (Zerndt) Bhardwaj, a lycopsid megaspore from the Middle Pennsylvanian of southern Illinois. |
1981 |
| details |
Middle Pennsylvanian |
|
Illinois |
Dimichele,W.A. et al. Lycopods of Pennsylvanian age Coals |
1979 |
| details |
Middle Pennsylvanian |
|
Kentucky |
Dimichele,W.A. et al. Lycopods of Pennsylvanian age Coals |
1979 |
| details |
Middle Pennsylvanian |
|
Indiana |
Dimichele,W.A. et al. Lycopods of Pennsylvanian age Coals |
1979 |
| details |
Westphalian B |
|
Poland |
DybovЎ-Jachowiczowa,S. et al. Preliminary note on revision of Carboniferous megaspores with Gula. Principles of the classification. |
1979 |
| details |
Early Mississippian |
|
Ohio |
DybovЎ-Jachowiczowa,S. et al. Preliminary note on revision of Carboniferous megaspores with Gula. Principles of the classification. |
1979 |
| original |
Carboniferous |
|
Poland |
Jachowicz,A. Flora of the Carboniferous:Microflora |
1972 |
| original |
Carboniferous |
|
Poland |
Jachowicz,A. Flora of the Carboniferous:Microflora |
1972 |
| original |
Carboniferous |
|
Poland |
Jachowicz,A. Flora of the Carboniferous:Microflora |
1972 |
| details |
Carboniferous |
|
Poland |
Jachowicz,A. Flora of the Carboniferous:Microflora |
1972 |
| details |
Westphalian D |
|
England(Gloucestershire) |
Wagner,R.H. et al. The stratigraphic implications of the Westphalian D, macro and microflora of the Forest of Dean Coalfield, (Gloucestershire), England. |
1972 |
| details |
Nd |
|
Nd |
Lachkar,G. New definitions of the megaspore genera Valvisisporites and Pseudovalvisisporites and their principal species. |
1968 |
| 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 A |
Westphalian D |
Poland |
Zoldani,Z. A taxonomic and stratigraphical study of the genus Valvisisporites from the Carboniferous of the Lublin District. |
1966 |
| details |
Stephanian |
|
France |
Pi©rart,P. Megaspores of the French Stephanian |
1965 |
| details |
Westphalian A |
Westphalian B |
Scotland(Ayr) |
Sen,J. The megaspores of the Ayrshire Coalfield and their stratigraphic value. |
1964 |
| details |
Allegheny |
|
USA(Appalachian Bn.) |
Abbott,M.L. Lycopod fructifications from the Upper Freeport (No.7) Coal in southeastern Ohio. |
1963 |