| 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 |
Late Aptian |
Early Albian |
Argentina(Santa Cruz) |
Baldoni,A.M. et al. Megaspores from the Lower Cretaceous Kachaike Formation, Santa Cruz Province, Argentina. |
1991 |
| details |
Berriasian |
Cenomanian |
Nd |
Batten,D.J. et al. Morphological reassessment of some zonate coronate megaspore genera of mainly post-Palaeozoic age. |
1993 |