| original |
Hauterivian |
Barremian |
|
Volkheimer,W. et al. Palynological data of the Ortiz Formation (La Amarga Group) Lower Cretaceous of the Neuqu©n Basin, (Argentina). |
1977 |
| details |
Barremian |
|
|
Volkheimer,W. Fossil microfloras. |
1978 |
| details |
Hauterivian |
Barremian |
|
Dellape,D. et al. Stratigraphy and palynology of the Mulichinco Agrio Formations and La Amarga Group, South of Zapala (Neuqu©n Province) |
1979 |
| details |
Late Jurassic |
Early Cretaceous |
South America |
Volkheimer,W. Upper Jurassic and Lower Cretaceous microfloras of Latin America. |
1980 |
| details |
Barremian |
|
|
Volkheimer,W. et al. Stratigraphic distribution of Jurassic and Cretaceous palynomorphs in the Andean Realm and neighbouring areas of Southern South America, with special consideration of the Neuqu©n Basin. |
1981 |
| details |
Barremian |
|
South America |
Riccardi,A.C. The Cretaceous System of southern South America. |
1988 |
| details |
Early Cretaceous |
|
Nd |
Fensome,R.A. et al. Acritarchs and Fossil Prasinophytes: An index to genera, species and infraspecific taxa. |
1990 |