| original |
Maastrichtian |
|
North Dakota |
Bergad,R.D. Palynology of the Hell Creek Formation (Maastrichtian) in South-Central North Dakota. |
1974 |
| original |
Maastrichtian |
|
North Dakota |
Bergad,R.D. Ultrastructural studies of selected North American Cretaceous megaspores of Minerisporites, Erlandsonisporites, Horstiporites, and Ricinospora, nov.gen. |
1978 |
| details |
Maastrichtian |
|
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Maastrichtian |
|
North Dakota |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |
| 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 |
Maestrichtian |
|
Mongolian Republic |
Krassilov,V.A. et al. Maastrichtian aquatic plants from Mongolia. |
1995 |
| details |
Maestrichtian |
|
North Dakota |
Kedves,M. Tranmission Electron Microscopy of the Fossil Spores. |
1996 |