| original |
Campanian |
|
Montana |
Hall,J.W. Studies on fossil Azolla |
1969 |
| details |
Cretaceous |
|
Nd |
Jain,R.K. Pre-Tertiary records of Salviniaceae. |
1971 |
| details |
Maastrichtian |
|
North Dakota |
Bergad,R.D. Palynology of the Hell Creek Formation (Maastrichtian) in South-Central North Dakota. |
1974 |
| details |
Campanian |
|
Montana |
Potonie,R. Examples of the natural system of spores, a supplement to the synopsis of the Sporae in situ, 1963 and the research reports from 1965,1967, and 1970 and to the phylogenetic sporolog 1973 |
1975 |
| details |
Campanian |
|
Montana |
Srivastava,S.K. Cretaceous spore-pollen floras |
1978 |
| details |
Campanian |
|
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Campanian |
|
Montana |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| details |
Late Campanian |
|
|
Papк,O.H. et al. Palynological data from the Los Alamitos Formation, Montonilo locality Department of 25 De Mayo, Rio Negro, Argentina. Relationship with contemporary stratigraphic units from nearby areas. |
1995 |
| details |
Late Campanian |
|
|
Papк,O.H. et al. Palynological data from the Los Alamitos Formation, Montonilo locality, Dept. of 25 de Maayo, Rio Negro, Argentina. Relationsiiip with contemporary stratigrapiuc units from nearby areas. |
1995 |
| details |
Cretaceous |
|
Nd |
Ramanujam,C.G.K. et al. Remain of Azollaceae from Late Albian of Cauvery Basin and their evolutionary significance. |
1996 |