| details |
Cretaceous |
|
Nd |
Ramanujam,C.G.K. et al. Remain of Azollaceae from Late Albian of Cauvery Basin and their evolutionary significance. |
1996 |
| 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 |
Campanian |
|
Montana |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| details |
Campanian |
Maastrichtian |
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Campanian |
|
Montana |
Srivastava,S.K. Cretaceous spore-pollen floras |
1978 |
| details |
Late Campanian |
|
Canada(Alberta) |
Sweet,A.R. et al. A detailed study of the genus Azollopsis. |
1974 |
| details |
Campanian |
Maastrichtian |
Canada(Alberta) |
Gunther,P.R. et al. Megaspores and other palynomorphs of the Brazeau Formation (Upper Cretaceous) Nordegg area, Alberta, Canada. |
1972 |
| details |
Cretaceous |
|
Nd |
Jain,R.K. Pre-Tertiary records of Salviniaceae. |
1971 |
| details |
Campanian |
Maastrichtian |
Canada(Alberta) |
Gunther,P.R. et al. Megaspore palynology of the Brazeau Formation (Upper Cretaceous), Nordegg area, Alberta. |
1970 |
| details |
Late Cretaceous |
|
Montana |
Hall,J.W. Studies on fossil Azolla |
1969 |
| original |
Campanian |
|
Montana |
Hall,J.W. A new genus of Salviniaceae and a new species of Azolla from the Late Cretaceous. |
1968 |