Betula sp. McIn.,1985
- Citations total:
- 2
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| original | Late Eocene | Pleistocene | Canada(NWT,Mackenzie) | McIntyre,D.J. Palynology. (In: Geology, biostratigraphy and organic geochemistry of Jurassic to Pleistocene strata, Beaufort-MacKenzie area, Northwest Canada) | 1985 |
| original | Early Eocene | Middle Eocene | Alaska(North Slope) | Frederiksen,N.O. et al. Palynology of Eocene strata in the Sagavanirktok and Canning Formations on the North Slope of Alaska. | 2002 |