- Author:
- Robertson,E.B.
- Year:
- 1972
- Title:
- A reassessment of the position of the eastern depositional boundary of the Cretaceous Hell Creek Formation in Western North Dakota.
- Reference:
- Robertson,E.B. (1972) A reassessment of the position of the eastern depositional boundary of the Cretaceous Hell Creek Formation in Western North Dakota. American Journal of Botany Vol. 59 P. 662- 662
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Angiosperms | Angiosperms | Montana | Late Cretaceous | Paleocene |
| Angiosperms | Angiosperms | North Dakota | Late Cretaceous | Paleocene |
| Dinoflagellate | Dinoflagellate | Montana | Early Paleocene | |
| Fern | Fern | Montana | Late Cretaceous | Paleocene |
| Fern | Fern | North Dakota | Late Cretaceous | Paleocene |
| Gymnosperms | Gymnosperms | Montana | Late Cretaceous | Paleocene |
| Gymnosperms | Gymnosperms | North Dakota | Late Cretaceous | Paleocene |
| Megaspore | Megaspore | Montana | Late Cretaceous | |
| Microspores | Microspores | Montana | Late Cretaceous |