Polypodiopsida - Hymenophyllales - Polypodiidae
Parent taxon: Hymenophyllales according to PPG. I 2016
See also Knowlton 1919 and Mabberley 2000
Sister taxa: none
Subtaxa: Eusphenopteris Excipulites Mecodium Trichomanites Trichomanoideae
Distribution:
• Quaternary of India (1 collection)
• Eocene of United States (1: Wyoming)
• Paleocene of United States (1: North Dakota)
• Cretaceous of Germany (1)
• Permian of United States (1: Oklahoma)
• Westphalian of United States (1: Illinois)
• Atokan of United States (2: Indiana)
• Pennsylvanian of Portugal (1)
• Mississippian of United States (1: Illinois)
• Carboniferous of Canada (1: New Brunswick), Portugal (1), Spain (2), Turkey (1), United States (19: Alabama, Colorado, Georgia, Illinois, Oklahoma)
Total: 34 collections including 36 occurrences