| details |
Early Jurassic |
|
USSR(Kazakh SSR) |
Leonenok,N.I. Lower Mesozoic Coal-bearing deposits in the area of the Middle Course of the River Ilek. (In: History of Lower Mesozoic Coal Accumulation in Kazakhstan: Part 2.) |
1961 |
| details |
Hettangian |
Toarcian |
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| original |
Early Jurassic |
|
USSR(Kazakh SSR) |
Faddeeva,I.Z. Megasmegaspores from the Jurassic of Western Kazahstan. |
1960 |
| details |
Early Jurassic |
|
USSR(Kazakh SSR) |
Faddeeva,I.Z. Part 5. Lower Mesozoic megaspores of the Or-Ilek Region and their stratigraphic significance. (In: Palynological validation of the stratigraphic division of the Lower Mesozoic Coal-bearing deposits of Or'-Ilek Region.) |
1965 |
| details |
Early Jurassic |
|
USSR(W.Kazakh Oblast) |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |