| details |
Late Permian |
|
Tanzania |
Yemane,K. et al. A short review of palaeoenvironments for Lower Beaufort, (Upper Permian), Karoo sequences from southern to central Africa: A major Gondwana lacustrine episode. |
1990 |
| details |
Late Permian |
|
Malawi |
Yemane,K. Palynoflora and kerogen constituents of an Upper Permian Gondwana deposits, Northern Malawi; Implications for paleoclimate and source-rock potential. (In: Pangea: Global Environments and Resources. A.F.Embry et al, editors) |
1994 |
| details |
Late Permian |
|
Malawi |
Yemane,K. Palynoflora and kerogen constituents of an Upper Permian Gondwana deposits, Northern Malawi; Implications for paleoclimate and source-rock potential. (In: Pangea: Global Environments and Resources. A.F.Embry et al, editors) |
1994 |
| details |
Induan |
|
USSR(European) |
Yaroshenko,O.P. et al. Palinologic characteristic of the Lower Triassic sediments of Timano-Pecherskaya Province and adjacent Regions |
1981 |
| details |
Induan |
|
USSR(Komi ASSR) |
Yaroshenko,O.P. et al. New species of Lower Triassic spores from the Pechora Syneclise |
1989 |
| details |
Early Triassic |
|
USSR(Ukrainian SSR) |
Yaroshenko,O.P. et al. Miospores and Lower triassic stratigraphy of the Pechora Syneclise. |
1991 |
| details |
Early Triassic |
|
USSR(Ukrainian SSR) |
Yaroshenko,O.P. et al. Miospores and Lower triassic stratigraphy of the Pechora Syneclise. |
1991 |
| details |
Tatarian |
|
China |
Yao,Z.-Q. et al. On the paleophyte-Mesophyte boundary. (In: Papers for the 5th International Palynological Conference.) |
1980 |
| details |
Late Permian |
|
China |
Yao,Z.-Q. et al. On the paleophyte-Mesophyte boundary |
1980 |
| details |
Late Permian |
Early Triassic |
China |
Yang,Z. et al. The Triassic of China. |
1982 |
| details |
Late Permian |
|
China(Sinkiang Uighur) |
Yang,J. et al. Classification and correlation of nonmarine Permo - Triassic Boundary in China. (In: Permo-Triassic Events in the Eastern Tethys; Stratigraphy, Classification and Relations with the Western Tethys. W.C.Sweet et al, editors) |
1992 |
| details |
Late Permian |
|
China(Shansi) |
Yang,J. et al. Classification and correlation of nonmarine Permo - Triassic Boundary in China. (In: Permo-Triassic Events in the Eastern Tethys; Stratigraphy, Classification and Relations with the Western Tethys. W.C.Sweet et al, editors) |
1992 |
| details |
Permian |
Triassic |
Alaska |
Witmer,R.J. et al. Biostratigraphic correlation of selected test wells of National Petroleum Reserve in Alaska |
1981 |
| details |
Early Cretaceous |
|
Oklahoma |
Wingate,F.H. Palynology of the Denton Shale (Lower Cretaceous), of southeastern Oklahoma. |
1974 |
| details |
Guadalupian |
|
Oklahoma |
Wilson,L.R. Geological history of the Gnetales. (Preliminary report on study under Nsf Grant G6589). |
1959 |
| details |
Kazanian |
Tatarian |
Scotland(Fife) |
Warrington,G. et al. Palaeontology of Permian deposits in the Forth Approaches. Appendix 3. |
1978 |
| details |
Stephanian |
Griesbachian |
Europe |
Warrington,G. Permian-Triassic. (In: Pollen and Spore Biostratigraphy of the Phanerozoic in Northwest Europe) |
1984 |