| details |
Paleozoic |
|
Scotland |
Arnold,C.A. An Introduction to Paleobotany. |
1947 |
| details |
Paleozoic |
|
Poland |
Arnold,C.A. An Introduction to Paleobotany. |
1947 |
| details |
Paleozoic |
|
W.Germany |
Arnold,C.A. An Introduction to Paleobotany. |
1947 |
| details |
Paleozoic |
|
Illinois |
Arnold,C.A. An Introduction to Paleobotany. |
1947 |
| details |
Westphalian A |
Westphalian C |
Netherlands |
Dijkstra,S.J. et al. A monographic revision of Carboniferous megaspores with special consideration to South Limburg, (Netherlands). |
1946 |
| details |
Westphalian C |
Early Stephanian |
Nd |
Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. |
1944 |
| details |
Desmoinesian |
|
Illinois |
Schopf,J.M. Spores from the Herrin (No. 6) Coal Bed in Illinois. |
1938 |
| details |
Desmoinesian |
|
Illinois |
Schopf,J.M. Spores characteristic of Illinois Coal No. 6. |
1935 |