original |
Helvetian |
|
Hungary |
Simoncsics,P. Spore, pollen, and Bog types of the Miocene Brown Coal area of Nograd.1. |
1969 |
original |
Albian |
Cenomanian |
Peru |
Brenner,G.J. Middle Cretaceous spores and pollen from northeastern Peru. |
1968 |
original |
Early Permian |
|
Congo |
Bose,M.N. et al. Palaeozoic sporae dispersae from Congo.1. Kindu-Kalima and Walikale Regions. |
1966 |
original |
Late Cretaceous |
|
Colorado |
Clarke,R.T. Palynology of Vermejo Formation Coals, (Upper Cretaceous) in the Canon City Coal Field, Fremont County, Colorado |
1963 |