| original |
Cenomanian |
|
Africa |
Timofeev,P.P. et al. Organic matter in Cretaceous "Black Shales" from the Atlantic and Pacific Oceans and their relation to the problems of oil and gas formation. |
1981 |
| original |
Albian |
|
Africa |
Timofeev,P.P. et al. Organic matter in Cretaceous "Black Shales" from the Atlantic and Pacific Oceans and their relation to the problems of oil and gas formation. |
1981 |
| original |
Albian |
|
Africa |
Timofeev,P.P. et al. Organic matter in Cretaceous "Black Shales" from the Atlantic and Pacific Oceans and their relation to the problems of oil and gas formation. |
1981 |
| details |
Kimmeridgian |
|
|
Volkheimer,W. et al. Preliminary palynological data from the Kimmeridgian Tordillo Formation, Chacay Melehue, Neuquina, Argentina. |
1993 |
| details |
Late Campanian |
|
|
Papк,O.H. et al. Palynological data from the Los Alamitos Formation, Montonilo locality, Dept. of 25 de Maayo, Rio Negro, Argentina. Relationsiiip with contemporary stratigrapiuc units from nearby areas. |
1995 |