| details |
Recent |
|
Nd |
Potonie,R. Position of the Paleozoic spore genera in the natural system. |
1954 |
| details |
Carboniferous |
Permian |
Nd |
Remy,W. Monosaccate pteridospermous pollen of the Carboniferous and Permian as well as general considerations of Paleozoic pollen with air sacs. |
1954 |
| details |
Tertiary |
|
Australia |
Duigan,S.L. A catalogue of the Australian Tertiary flora. |
1950 |
| details |
Late Stampian |
|
France |
Dangeard,L. Observations on the coaly shales of Menat and on a rock with pollen grains from the Puy de Mur and from Gergovie |
1934 |
| details |
Aquitanian |
|
France |
Dangeard,L. Observations on the coaly shales of Menat and on a rock with pollen grains from the Puy de Mur and from Gergovie |
1934 |