| details |
Westphalian B |
|
England |
Potonie,R. Synopsis of the Sporae in situ. |
1962 |
| details |
Nd |
|
Nd |
Potonie,R. Position of the Paleozoic spore genera in the natural system. |
1954 |
| details |
Late Devonian |
|
Nd |
Potonie,R. The spores of Palaeozoic plants in the natural (Morphologic) system |
1954 |
| original |
Westphalian B |
|
England(Yorkshire) |
Chaloner,W.G. Notes on the spores of two British Carboniferous Lycopods |
1954 |
| details |
Carboniferous |
|
USA |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |
| details |
Pottsville |
|
Kentucky |
Brack-Hanes,S.D. On a Lycopsid cone with Winged spores |
1981 |