| details |
Hauterivian |
Aptian |
|
Peralta,P.I. et al. Paleoenvironmental aspects of the Lower Cretaceous Agrio Format Inferred by dinocyst assemblages Neuqu©n Basin, Argentina |
1997 |
| details |
Late Valanginian |
Hauterivian |
|
Aguirre-Urreta,M.B. et al. Advances in the biostratigraphy of the Agrio Formation (Lower Cretaceous) of the Neuqu©n Basin, Argentina: ammonites, palynomorphs and calcareous nannofossils. |
1999 |
| details |
Early Cretaceous |
|
|
Peralta,P.I. et al. Early Cretaceous sea level variations and changes in dinocyst assemblages and organic matter components in the Neuqu©n Basin, western Argentina. |
2000 |