| original |
Late Cretaceous |
Tertiary |
Montana |
Miner,E.L. Paleobotanical examinations of Cretaceous and Tertiary Coals.1.Cretaceous Coals from Greenland. 2.Cretaceous and Tertiary Oals from Montana. |
1935 |
| details |
Late Cretaceous |
|
Greenland |
Schopf,J.M. et al. An annotated synopsis of Paleozoic fossil spores and the definition of generic groups. |
1944 |
| details |
Early Tertiary |
|
Montana |
Potonie,R. Synopsis of the genera of the sporae dispersae. Part 1 |
1956 |
| details |
Nd |
|
Nd |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |