| details |
Late Triassic |
|
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 |
Late Triassic |
|
USSR(Urals) |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| original |
Late Triassic |
|
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 Triassic |
|
USSR(Nenets Nat.Okrug) |
Entsova,F.I. et al. The boundary between the Permian and Triassic in the North Pre Urals |
1974 |
| details |
Carnian |
Rhaetian |
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |