Parent taxon: Cordaitopsida according to Z. Wang et al. 2018
See also Dilcher et al. 2005 and Jain and Delevoryas 1967
Sister taxa: none
Subtaxa: Acophyllum Artisia Cordaicarpon Noeggerathiopsis
Distribution:
• Triassic of Argentina (3 collections), Chile (1), France (1), India (2), Mexico (3), the Russian Federation (3)
• Permian to Triassic of South Africa (2)
• Permian of Antarctica (5), Australia (18), Botswana (1), Brazil (16), Canada (2: Prince Edward Island), Chile (1), China (33), the Congo-Kinshasa (4), India (11), Madagascar (4), Mongolia (4), Niger (1), the Russian Federation (58), South Africa (6), Tanzania (1), Uganda (1), United States (1: Texas), Zambia (2), Zimbabwe (1)
• Carboniferous to Permian of the Russian Federation (1)
• Carboniferous of Argentina (1), Canada (2: New Brunswick, Nova Scotia), the Russian Federation (4), Ukraine (1), United States (14: Alabama, Colorado, Illinois, Indiana, Kansas, Missouri, New Mexico, Ohio, Utah, West Virginia)
• Devonian of Canada (1: Quebec)
Total: 209 collections including 365 occurrences