Classification of the subfamily Adianthinae
Subfm. †Adianthinae
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G. †Proadiantus Ameghino 1897
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G. †Proheptaconus Bordas 1936
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†Proheptaconus patagonicus Ameghino 1904
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Invalid names: Proheptaconus trelewense Bordas 1939 [synonym]
G. †Tricoelodus Ameghino 1897
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†Tricoelodus bicuspidatus Ameghino 1897
†Tricoelodus boliviensis Cifelli and Soria 1983