| original |
Middle Ryazanian |
Late Ryazanian |
Denmark |
Davey,R.J. Dinocysts stratigraphy of the latest Jurassic to Early Cretaceous of the Haldager No.1 borehole, Denmark. |
1982 |
| details |
Early Ryazanian |
|
North Sea |
Birkelund,T. et al. The Hectoroceras kochi Zone, (Ryazanian), in the North Sea Central Graben and remarks on the Late Cimmerian Unconformity. |
1982 |
| details |
Middle Ryazanian |
Late Ryazanian |
Denmark |
Mehrotra,N.C. et al. Archeopyle type in the dinoflagellate cyst genus Imbatodinium: Some new observations. |
1984 |
| details |
Early Ryazanian |
|
North Sea |
Herngreen,G.F.W. et al. Palynology of the Upper Jurassic, Central Graben, Scruff, and Delfland Groups in the Dutch Part of the North Sea Continental Shelf. |
1984 |
| details |
Ryazanian |
|
Norway |
…rhus,N. et al. Biostratigraphy of a Lower Cretaceous section from Sklinnabanken, Norway, with some comments on the Andoya exposure |
1986 |
| details |
Late Valanginian |
|
North Sea |
Heilmann-Clausen,C. Lower Cretaceous dinoflagellate biostratigraphy in the Danish Central Trough |
1987 |
| details |
Ryazanian |
|
North Sea |
Herngreen,G.F.W. et al. Dinoflagellate, sporomorph, and micropaleontological zonation of Callovian to Ryazanian strata in the Central North Sea Graben, the Netherlands. |
1988 |
| details |
Late Portlandian |
Early Ryazanian |
North Sea |
Herngreen,G.F.W. et al. Dinoflagellate, sporomorph, and micropaleontological zonation of Callovian to Ryazanian strata in the Central North Sea Graben, the Netherlands. |
1988 |
| details |
Ryazanian |
|
North Sea |
Herngreen,G.F.W. et al. Revision of the "Late Jurassic" stratigraphy of the Dutch Central North Sea Graben. |
1989 |
| details |
Ryazanian |
|
Norway(Offshore) |
Zwan,C.J.Van Der et al. Palynostratigraphy and palynofacies reconstruction of the Upper Jurassic to Lowermost Cretaceous of the Draugen Field, offshore Mid Norway |
1990 |
| details |
Portlandian |
Berriasian |
North Sea |
Bell,D.G. et al. Better prospect evaluation with organic geochemistry, biostratigraphy and Seismics |
1990 |
| details |
Early Ryazanian |
|
Denmark |
Poulsen,N.E. Upper Jurassic dinocyst dinocyst stratigraphy in the Danish Central Trough. (In: The Jurassic in the Southern Central Trough. O.Michelsen and N. Frandsen, editors) |
1991 |
| details |
Ryazanian |
|
United Kingdom |
Costa,L.I. et al. Dinoflagellate cysts of the Cretaceous System. (In: A Stratigraphic Index of Dinoflagellate Cysts. A.J.Powell, editor) |
1992 |
| details |
Barremian |
|
Spitsbergen |
Grosfjeld,K. Palynoligocal age constraints on the base of the Helvetiafjellet Formation, (Barremian) on Spitsbergen. |
1992 |
| details |
Portlandian |
Ryazanian |
USSR(Moscow Basin) |
Iosifova,E.K. Some new dinocyst taxa from the Neocomian of the Moscow Synclise. |
1992 |
| details |
Ryazanian |
|
Scotland(Hebrides) |
Hitchen,K. et al. Mesozoic rocks from the Hebrides Shelf and implications for hydrocarbon prospectivity in the northern Rockall Tough |
1993 |
| details |
Late Portlandian |
Ryazanian |
North Sea |
Partington,M.A. et al. Genetic sequence stratigraphy for the North Sea Late Jurassic and Early Cretaceous: Distribution and prediction of Kimmeridgian-Late Ryazanian Reservoirs in the North Sea and adjacent areas. (In: Petroleum Geology of Northwest Europe: Proceedings of the 4th Conference. J.R. Parker, editor) |
1993 |