†family Gigantopteridaceae Koidzumi 1936
Gigantopteridales - Gigantopteridaceae
Parent taxon: Gigantopteridales according to H. N. Andrews 1970
Sister taxa: Bicoemplectopteridium, Bicoemplectopteris, Delnortea, Emplectopteridaceae, Gigantonoclea, Tricoemplectopteris, Zeilleropteris
Subtaxa: Gigantopteris Gothanopteris Palaeogoniopteris
Ecology: stationary C3 autotroph
Distribution:
• Triassic of China (1 collection)
• Permian of China (45), Indonesia (1), Japan (1), Malaysia (1), Mexico (1), North Korea (4), Oman (1), the Russian Federation (1), South Korea (3), Thailand (1), Turkey (1), United States (9: Michigan, Oklahoma, Texas)
• Carboniferous of Canada (1: Nova Scotia), United States (6: Illinois, Michigan, Ohio)
Total: 77 collections including 97 occurrences