Polypodiopsida - Salviniales - Polypodiidae
Parent taxon: Salviniales according to PPG. I 2016
See also Christophel 1976, Hickey 1977, Jud 2011, Knowlton 1919, Mabberley 2000, Vallati et al. 2016, Vallati et al. 2017 and Vallati et al. 2020
Sister taxa: Azollaceae, Parazollopsis
Subtaxa: Ariadnaesporites Azolla Azollophyllum Massulites Salvinia Sausarospermum
Distribution:
• Quaternary of China (3 collections), Japan (4), the United Kingdom (3)
• Pliocene to Pleistocene of Italy (2)
• Pliocene of Germany (5), Japan (1), the Russian Federation (1)
• Miocene to Pliocene of Germany (1)
• Miocene of Argentina (4), China (2), the Czech Republic (1), Germany (33), Japan (1), Poland (1), the Russian Federation (17), Switzerland (1)
• Oligocene to Miocene of Argentina (6), Australia (2)
• Oligocene of Canada (1: British Columbia), Germany (9), the Russian Federation (16), the United Kingdom (1)
• Eocene to Oligocene of the United Kingdom (1)
• Eocene of Argentina (2), Australia (2), Canada (3: British Columbia), China (3), India (1), the United Kingdom (1), United States (35: North Dakota, Washington, Wyoming)
• Paleocene to Eocene of Belgium (2), the Netherlands (3)
• Paleocene of Antarctica (1), Argentina (5), Belgium (1), Canada (8: Alberta, Saskatchewan), Colombia (1), India (1), the Netherlands (10), United States (6: Montana, North Dakota, South Dakota, Wyoming)
• Paleogene of India (1)
• Tertiary of the Netherlands (1), the Russian Federation (1)
• Cretaceous to Paleogene of Antarctica (3), Argentina (2), Canada (3: Alberta)
• Cretaceous of Antarctica (1), Argentina (7), Canada (63: Alberta, Nunavut), China (1), Egypt (1), India (1), Mexico (1), the Netherlands (2), South Sudan (1), United States (18: Alabama, Kansas, Maryland, Minnesota, Montana, New Mexico, North Dakota)
Total: 308 collections including 458 occurrences