| original |
Visean |
|
Scotland |
Chaloner,W.G. On Lepidocarpon waltoni, sp. n. from the Lower Carboniferous of Scotland |
1952 |
| details |
Recent |
|
Nd |
Potonie,R. Position of the Paleozoic spore genera in the natural system. |
1954 |
| details |
Paleozoic |
|
Nd |
Potonie,R. The spores of Palaeozoic plants in the natural (Morphologic) system |
1954 |
| details |
Visean |
|
Scotland |
Potonie,R. Synopsis of the Sporae in situ. |
1962 |
| details |
Namurian |
|
Scotland |
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1996 |