Parent taxon: Gnetophyta according to A. B. Doweld 2001
See also Mabberley 2000
Sister taxa: none
Subtaxa: Gnetales Gontriglossa Pityophyllum
Distribution:
• Eocene of Australia (4 collections)
• Cretaceous to Paleogene of New Zealand (2)
• Cretaceous of Argentina (1), Brazil (72), Canada (10: Alberta, British Columbia), China (2), Colombia (4), Cote D'Ivoire (3), Egypt (64), Ghana (18), Guinea-Bissau (1), India (1), Israel (2), Kazakhstan (1), Libya (1), Morocco (3), Nigeria (26), Peru (11), the Russian Federation (13), Saudi Arabia (1), Senegal (3), South Sudan (4), Sudan (20), Svalbard and Jan Mayen (3), United States (22: Alaska, Virginia)
• Jurassic to Cretaceous of Canada (3: British Columbia, Yukon), Egypt (1), the Russian Federation (6)
• Jurassic of Belarus (4), China (72), Georgia (9), Germany (1), India (1), Iran (1), Kazakhstan (25), Kyrgyzstan (2), Mongolia (7), Poland (2), the Russian Federation (147), Tajikistan (19), Turkmenistan (1), Ukraine (5), United States (1: Montana), Uzbekistan (10)
• Triassic to Jurassic of Georgia (2), Kazakhstan (1)
• Triassic of Argentina (1), Chile (1), China (11), Japan (3), Kyrgyzstan (1), Mongolia (3), the Russian Federation (12), South Africa (7), South Korea (2), Tajikistan (1), Ukraine (4)
• Permian of China (1), India (10)
Total: 669 collections including 1034 occurrences