Subfamily Parkerioideae Burnett 1835 (fern)
Polypodiopsida - Polypodiales - Polypodiidae
Parent taxon: Pteridaceae according to PPG. I 2016
Sister taxa: Adiantopteris, Cheilanthoideae, Contignisporites, Cryptogrammoideae, Eriosorus, Kolymella, Onychium, Pteridoideae, Pterisisporites, Vittarioideae
Subtaxa: Acrostichum Ceratopteris
Distribution:
• Quaternary of the Bahamas (1 collection), India (4), Japan (1), Panama (1)
• Pliocene of Bolivia (1), Panama (1)
• Miocene to Pliocene of Mexico (1)
• Miocene of Panama (1)
• Oligocene of India (1)
• Eocene of Germany (1), Japan (10), Myanmar (46), the United Kingdom (5), United States (7: Colorado, Georgia, Oregon, Wyoming)
• Tertiary of India (1)
• Paleocene of Colombia (1)
Total: 83 collections including 84 occurrences