- Author:
- Bergad,R.D.
- Year:
- 1974
- Title:
- Palynology of the Hell Creek Formation (Maastrichtian) in South-Central North Dakota.
- Reference:
- Bergad,R.D. (1974) Palynology of the Hell Creek Formation (Maastrichtian) in South-Central North Dakota. PhD Thesis, University of Minnesota P. 1- 451
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Triletes | Triletes mirabilissimus | North Dakota | Maastrichtian | |
| Styx | Styx bella | North Dakota | Maastrichtian | |
| Azolla | Azolla barbata | North Dakota | Maastrichtian | |
| Azolla | Azolla distincta | North Dakota | Maastrichtian | |
| Azolla | Azolla lauta | North Dakota | Maastrichtian | |
| Parazolla | Parazolla heterotricha | North Dakota | Maastrichtian |