| original |
Late Jurassic |
Early Cretaceous |
Argentina(Santa Cruz) |
Gamerro,J.C. et al. Megaspores from the Spring Hill Formation (Upper Jurassic to Lower Cretaceous), of the Southern Basin of Magellanargentina). |
1977 |
| original |
Early Cretaceous |
|
Argentina(Santa Cruz) |
Baldoni,A.M. et al. Megaspores of the Lower Cretaceous Springhill form Ation in the Austral Basin, (Or Magallanica), Argentina and Chile |
1985 |
| original |
Early Cretaceous |
|
Chile |
Baldoni,A.M. et al. Megaspores of the Lower Cretaceous Springhill form Ation in the Austral Basin, (Or Magallanica), Argentina and Chile |
1985 |
| details |
Berriasian |
Valanginian |
South America |
Riccardi,A.C. The Cretaceous System of southern South America. |
1988 |
| details |
Berriasian |
Hauterivian |
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Berriasian |
Hauterivian |
Argentina |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| details |
Mesozoic |
|
Nd |
Kovach,W.L. A review of Mesozoic megaspore-ultrastructure. (In: Ultrastructure of Fossil Spores and Pollen. M.H.Kurmann and J.A.Doyle, editors) |
1994 |
| details |
Cretaceous |
|
Nd |
Taylor,T.N. et al. In situ, pollen and spores in plant evolution. 14C -Importance of in situ, pollen and spores in understanding the biology and evolution of fossil plants. (Principles and Applications. Applications. J.Jansonius and D.C.McGregor, editors.) |
1996 |