| details |
Liassic |
Oxfordian |
USSR(Kazakh SSR) |
Aliev,M.M. et al. Jurassic continental deposits of eastern Central Asia, (dating, division, correlation). |
1981 |
| 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 |
Nd |
|
Egypt |
Abdelmalik,W.M. et al. Upper Jurassic - Lower Cretaceous microflora from the Northwestern Desert, Egypt: Betty Well No.1 and Ghazalat Well No.1. |
1981 |
| details |
Aalenian |
Early Bathonian |
North Sea |
Abbink,O.A. et al. Palynomorph ecostratigraphy of the Middle Jurassic Ness Formation (Brent Group, East Shetland Basin). (In: Palynological Investigation in the Jurassic of the North Sea Region. O.A. Abbink) |
1998 |