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
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Genus Species Country(Region) From To
Ephedra Ephedra Oklahoma Middle Permian Recent
Ephedra Ephedra sp Oklahoma Guadalupian
Ephedripites Ephedripites sp Oklahoma Guadalupian
Gnetum Gnetum USSR Tertiary
Vittatina Vittatina sp Oklahoma Guadalupian
Welwitchia Welwitchia Oklahoma Middle Permian Recent
Welwitchia Welwitchia USSR Middle Permian Recent
Welwitchia Welwitchia Australia Middle Permian Recent
Welwitchia Welwitchia sp Oklahoma Guadalupian
Welwitschiapites Welwitschiapites Oklahoma Guadalupian