| details |
Barremian |
|
|
Gamerro,J.C. Megaspores of the Cretaceous of Patagonia Ii. megaspores in the La Amarga Formation, Lower Cretaceous, Neuqu©n Provence |
1975 |
| details |
Early Cretaceous |
|
Argentina(Santa Cruz) |
Gamerro,J.C. Megaspores of the Cretaceous of Patagonia Ii. megaspores in the La Amarga Formation, Lower Cretaceous, Neuqu©n Provence |
1975 |
| details |
Berriasian |
Aptian |
South America |
Riccardi,A.C. The Cretaceous System of southern South America. |
1988 |
| details |
Barremian |
Aptian |
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Barremian |
Aptian |
Argentina(Santa Cruz) |
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 |