| details |
Early Triassic |
Middle Triassic |
USSR(Primorsk Kray) |
Krassilov,V.A. et al. Pleuromeia from the Lower Triassic of the Far East of the USSR. |
1975 |
| details |
Griesbachian |
Spathian |
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Early Triassic |
|
USSR(Far East) |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| details |
Triassic |
|
Russia(European) |
Balme,B.E. Fossil in situ, spores and pollen grains: An annotated catalogue. |
1995 |