| original |
Rhaetian |
Liassic |
Denmark |
Bertelsen,F. et al. Megaspores and Ostracods from the Rhaeto-Liassic section in the Boring Rodby No 1, Southern Denmark |
1970 |
| details |
Maastrichtian |
|
North Dakota |
Bergad,R.D. Palynology of the Hell Creek Formation (Maastrichtian) in South-Central North Dakota. |
1974 |
| details |
Rhaetian |
|
Denmark |
Boersma,M. et al. Triassic palynomorphs, index to genera and species |
1987 |
| details |
Rhaetian |
Toarcian |
Worldwide |
Kovach,W.L. et al. Worldwide stratigraphic occurrences of Mesozoic and Tertiary megaspores. |
1989 |
| details |
Rhaetian |
|
Denmark |
Batten,D.J. et al. Catalog of Mesozoic and Tertiary megaspores |
1990 |