- Author:
- Wilson,L.R.
- Year:
- 1959
- Title:
- Geological history of the Gnetales. (Preliminary report on study under Nsf Grant G6589).
- Reference:
- Wilson,L.R. (1959) Geological history of the Gnetales. (Preliminary report on study under Nsf Grant G6589). Oklahoma Geology Notes Vol. 19 # 2 P. 35- 40
- Google Academy:
- try to search by title in english
| Genus | Species | Country(Region) | From | To |
|---|---|---|---|---|
| Welwitchia | Welwitchia | Australia | Middle Permian | Recent |
| Ephedripites | Ephedripites sp | Oklahoma | Guadalupian | |
| Ephedra | Ephedra sp | Oklahoma | Guadalupian | |
| Welwitchia | Welwitchia sp | Oklahoma | Guadalupian | |
| Vittatina | Vittatina sp | Oklahoma | Guadalupian | |
| Welwitschiapites | Welwitschiapites | Oklahoma | Guadalupian | |
| Ephedra | Ephedra | Oklahoma | Middle Permian | Recent |
| Welwitchia | Welwitchia | Oklahoma | Middle Permian | Recent |
| Welwitchia | Welwitchia | USSR | Middle Permian | Recent |
| Gnetum | Gnetum | USSR | Tertiary |