| original |
Early Triassic |
|
India(West Bengal) |
Maheshwari,H.K. et al. Lower Triassic palynomorphs from the Maitur Formation, West Bengal, India. |
1975 |
| details |
Early Triassic |
|
India(West Bengal) |
Boersma,M. et al. Triassic palynomorphs, index to genera and species |
1987 |
| details |
Early Triassic |
|
India |
Maheshwari,H.K. et al. Megaspore biostratigraphy of the Gondwana. (In: Concepts, limits and extension of the Indian Gondwana. B.S.Venkatachala and H.K.Maheshwari, editors) |
1988 |
| details |
Spathian |
Spathian |
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Early Triassic |
|
India(West Bengal) |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |