| original |
Barremian |
Aptian |
China(Inner Mongolia) |
Li,W. et al. Early Cretaceous megaspores from the Jalainor Group of northeast Inner Mongolia, P.R.China. |
1987 |
| details |
Barremian |
Aptian |
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Mesozoic |
|
Nd |
Kovach,W.L. A review of Mesozoic megaspore-ultrastructure. (In: Ultrastructure of Fossil Spores and Pollen. M.H.Kurmann and J.A.Doyle, editors) |
1994 |
| details |
Late Barremian |
Early Aptian |
Argentina(Santa Cruz) |
Kedves,M. Tranmission Electron Microscopy of the Fossil Spores. |
1996 |
| details |
Barremian |
Aptian |
China(Inner Mongolia) |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| details |
Barremian |
Aptian |
Nd |
Batten,D.J. et al. Morphological reassessment of some zonate coronate megaspore genera of mainly post-Palaeozoic age. |
1993 |
| original |
Early Cretaceous |
|
Argentina(Santa Cruz) |
Archangelsky,S. et al. Ultrastructure of two new Cretaceous megaspores from Santa Cruz, Argentina. |
1989 |