| details |
Nd |
|
Nd |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 2 |
1958 |
| details |
Recent |
|
Nd |
Potonie,R. Position of the Paleozoic spore genera in the natural system. |
1954 |
| details |
Late Carboniferous |
|
W.Germany(N.Rhine) |
Potonie,R. et al. The genera of Paleozoic sporae dispersae and their stratigraphy. |
1954 |
| details |
Nd |
|
Nd |
Pant,D.D. Suggestions for the classification and nomenclature of fossil spores and pollen grains |
1954 |
| details |
Pennsylvanian |
|
Pennsylvania |
Ferm,J.C. Megaspores of the Middle (?) Kittanning Coal in Beaver County, Pennsylvania. |
1950 |
| details |
Nd |
|
Nd |
Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. |
1944 |
| original |
Desmoinesian |
|
Illinois |
Schopf,J.M. Spores from the Herrin (No. 6) Coal Bed in Illinois. |
1938 |