| details |
Aptian |
|
USSR(WSL) |
Rovnina,L.V. et al. Lower Cretaceous deposits. (In: Complex examination of the Jurassic and Lower Cretaceous stratigraphy of Western Siberia. L.A.Rovnina, editor) |
1978 |
| details |
Late Barremian |
Early Aptian |
USSR(Nenets Nat.Okrug) |
Gryazeva,A.S. Palynological basis for the stratigraphy of Lower Cretaceous deposits of the Pechorsk Basin. (In: Mikrofitofossilii v neftyanoi geologii. N. A. Timoshina, editor) |
1980 |
| details |
Aptian |
|
USSR(Nenets Nat.Okrug) |
Gryazeva,A.S. Palynological basis for the stratigraphy of Lower Cretaceous deposits of the Pechorsk Basin. (In: Mikrofitofossilii v neftyanoi geologii. N. A. Timoshina, editor) |
1980 |
| details |
Barremian |
|
USSR(Yamalo-Nenets) |
Popovicheva,L.V. et al. Stratigraphy and correlation of Cretaceous Petroleum deposits of the Polui-Yamal Region |
1981 |
| details |
Tithonian |
Hauterivian |
Canada(NWT,Mackenzie) |
Fensome,R.A. Miospores from the Jurassic-Cretaceous boundary beds, Aklavik Range, Northwest Territories, Canada. (Incorporating taxonomic reviews of several Groups of Mid-Late Mesozoic miospores) |
1983 |