| details |
Tithonian |
|
|
Volkheimer,W. et al. Palynology of the Tithonian (Vaca Muerta Formation ), of Caichigue area, Nequen Province, Central Western Argentina. Part A: Terrestrial species. |
1975 |
| details |
Early Cretaceous |
|
|
Volkheimer,W. et al. Stratigraphic significance of Paleozoic and Mesozoic microflora from Argentina and neighboring countries. |
1976 |
| details |
Early Tithonian |
|
|
Volkheimer,W. et al. Palynological characteristics of the Upper Juarssic and Lower Cretaceous Formations of the Neuqu©n Basin, (Argenine Republic). |
1976 |
| details |
Tithonian |
|
|
Volkheimer,W. Fossil microfloras. |
1978 |