Classification of the family Azollaceae

Fm. †Azollaceae Wettstein 1903
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G. †Azollopsis Hall 1968
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†Azollopsis intermedia Sweet and Hills 1974
†Azollopsis tormentosa Hall 1968
G. †Paleoazolla Archangelsky et al. 1999
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†Paleoazolla patagonica Archangelsky et al. 1999