Ptychocarpus densus
- Citations total:
- 4
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Author - title
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Year
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| original | Carboniferous | Permian | Europe | Remy,W. Investigations on some fructifications of ferns and Pteridosperms from the Carboniferous and Permian of Middle Europe. | 1953 |
| details | Nd | 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 | Westphalian D | Nd | Potonie,R. Synopsis of the Sporae in situ. | 1962 |