| details |
Valanginian |
Turonian |
China(Kiangsi) |
Yu,J. et al. Cretaceous spore pollen in Jiangxi Province. |
1985 |
| details |
Late Senonian |
|
China(Kwangtung) |
Yu,J. et al. Late Cretaceous palynological assemblages of Sanshui Basin, Guandong Province and their paleoclimatic implication. |
1987 |
| details |
Neocomian |
|
Argentina(San Luis) |
Yrigoyen,M.R. The Cretaceous age of the Gigante Group (San Luis) and its relation with surrounding basins. |
1975 |
| details |
Aptian |
|
Canada(NWT,Mackenzie) |
Yorath,C.J. et al. Cretaceous and Tertiary stratigraphy and paleogeography northern Interior Plains, District of MacKenzie. |
1981 |
| details |
Middle Jurassic |
|
China(Shansi) |
Yin,F.-J. et al. Middle Jurassic Sporopollen Assemblage from the Yan'an Formation in Binxian County, Shaanxi Province and its significance. |
1999 |
| details |
Jurassic |
|
USSR(Caucasus) |
Yaroshenko,O.P. Spores and pollen complexes of Jurassic and Lower Cretaceous deposits of northern Caucasus and their stratigraphic importance |
1965 |
| details |
Jurassic |
|
USSR(Caucasus) |
Yaroshenko,O.P. Spores and pollen complexes of Jurassic and Lower Cretaceous deposits of northern Caucasus and their stratigraphic importance |
1965 |
| details |
Early Cretaceous |
|
USSR(Caucasus) |
Yaroshenko,O.P. Spores and pollen complexes of Jurassic and Lower Cretaceous deposits of northern Caucasus and their stratigraphic importance |
1965 |
| details |
Early Cretaceous |
|
USSR(Caucasus) |
Yaroshenko,O.P. Spores and pollen complexes of Jurassic and Lower Cretaceous deposits of northern Caucasus and their stratigraphic importance |
1965 |
| details |
Middle Jurassic |
|
China(Heilungkiang) |
Yang,J. et al. New datum of the Middle Jurassic sporopollen in Sanjiang Basin, Eastern Heilongjiang, China. |
2000 |
| details |
Early Jurassic |
|
China(Hupei) |
Yang,C.-T. On the characteristics and age of palynological assemblage of "Hsiangchi Series". |
1978 |
| details |
Early Jurassic |
|
China(Szechwan) |
Yang,C.-T. On the characteristics and age of palynological assemblage of "Hsiangchi Series". |
1978 |
| details |
Jurassic |
|
China(Shensi) |
Xu,Y. et al. Spores and pollen (Jurassic). (In: Mesozoic Stratigraphy and Palaeontology of the Shan-Gan-Ning Basin.) |
1980 |
| details |
Aptian |
|
Gabon |
Wood,G.D. et al. Palynology, palynofacies, paleoenvironments and geochemistry of Lower Cretaceous (Pre-Salt) Cocobeach Group, North Gabon Subbas Gabon. |
1997 |
| details |
Early Cretaceous |
|
Gabon |
Wood,G.D. et al. Palynology, palynofacies and geochemistry of the Early Cretaceous Cocobeah Group, Gabon. |
1997 |
| details |
Triassic |
Albian |
Alaska |
Witmer,R.J. et al. Biostratigraphic correlation of selected test wells of National Petroleum Reserve in Alaska |
1981 |
| details |
Early Cretaceous |
|
Utah |
Witkind,I.J. et al. Age and correlation of Cretaceous rocks previously assigned to the Morrison (?) Formation Sanpete-Sevier Valley area, Central Utah. |
1986 |