| details |
Cretaceous |
|
Nd |
Cross,A.T. Plant microfossils and the application of their study to Coal stratigraphy. |
1950 |
| 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 |
Ypresian |
|
Belgium |
Pastiels,A. Chemical Histology study of Hystrichosphere Shells. |
1945 |
| details |
Eocene |
Late Neogene |
Mexico |
Sanders,J.M. The microscopical examination of crude petroleum. |
1937 |
| details |
Cretaceous |
|
Mexico |
Sanders,J.M. The microscopical examination of crude petroleum. |
1937 |
| details |
Miocene |
|
W.Germany(Hesse) |
Kirchheimer,F. The thermal Damage of pollen in Coals. |
1933 |