| details |
Middle Eocene |
|
Utah |
Bradley,W.H. Origin and microfossils of the oil shales of the Green River Formation of Colorado and Utah. |
1931 |
| details |
Middle Eocene |
|
Utah |
Bradley,W.H. Origin and microfossils of the oil shales of the Green River Formation of Colorado and Utah. |
1931 |
| details |
Middle Eocene |
|
Utah |
Bradley,W.H. Origin and microfossils of the oil shales of the Green River Formation of Colorado and Utah. |
1931 |
| details |
Middle Eocene |
|
Colorado |
Bradley,W.H. Origin and microfossils of the oil shales of the Green River Formation of Colorado and Utah. |
1931 |
| details |
Middle Eocene |
|
Colorado |
Bradley,W.H. Origin and microfossils of the oil shales of the Green River Formation of Colorado and Utah. |
1931 |
| details |
Middle Eocene |
|
Colorado |
Bradley,W.H. Origin and microfossils of the oil shales of the Green River Formation of Colorado and Utah. |
1931 |
| details |
Middle Eocene |
|
Colorado |
Bradley,W.H. Origin and microfossils of the oil shales of the Green River Formation of Colorado and Utah. |
1931 |
| details |
Carboniferous |
|
Czechoslovakia |
Nemejc,F. A study on the systematical position of the fructification called Sporangiostrobus Bode. |
1931 |
| details |
Late Rhaetian |
Early Liassic |
Greenland |
Harris,T.M. The fossil flora of Scoresby Sound, east Greenland. Part 1. Cryptogams (exlusive of Lycopodiales). |
1931 |
| details |
Late Cretaceous |
Tertiary |
Greenland |
Arnold,C.A. Microfossils from Greenland Coal. |
1932 |
| details |
Late Cretaceous |
|
Greenland |
Arnold,C.A. Microfossils from Greenland Coal. |
1932 |
| original |
Pottsville |
|
Ohio |
Halle,T.G. The structure of certain fossil spore-bearing organs believed to belong to the Pteridosperms. |
1933 |
| original |
Late Carboniferous |
|
England(Yorkshire) |
Halle,T.G. The structure of certain fossil spore-bearing organs believed to belong to the Pteridosperms. |
1933 |
| original |
Westphalian |
|
Germany |
Halle,T.G. The structure of certain fossil spore-bearing organs believed to belong to the Pteridosperms. |
1933 |
| original |
Westphalian |
|
France |
Halle,T.G. The structure of certain fossil spore-bearing organs believed to belong to the Pteridosperms. |
1933 |
| details |
Late Cretaceous |
|
Greenland |
Miner,E.L. A new Gleicheniopsis from the Upper Cretaceous of Western Greenland. |
1934 |
| details |
Late Cretaceous |
|
Greenland |
Miner,E.L. A new Gleicheniopsis from the Upper Cretaceous of Western Greenland. |
1934 |