- Author:
- Steeves,M.W.;Barghoorn,E.S.
- Year:
- 1959
- Title:
- The pollen of Ephedra.
- Reference:
- Steeves,M.W. et al. (1959) The pollen of Ephedra. Journal of the Arnold Arboretum Vol. 40 # 3 P. 221- 255
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Ephedra | Ephedra | Nd | Recent | |
| Ephedra | Ephedra funera | Nd | Recent | |
| Ephedra | Ephedra pachyclada | Nd | Recent | |
| Ephedra | Ephedra sinica | Nd | Recent | |
| Ephedra | Ephedra stapfi sp. nov. | New York | Late Cretaceous |