Classification of Pecharová and Prokop 2018
Or. †Megasecoptera Brongniart 1885
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Fm. †Protohymenidae Tillyard 1924
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G. †Arroyohymen Prokop and Kukalová-Peck 2017
G. †Ivahymen Martynov 1932
G. †Protohymen Tillyard 1924
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†Protohymen carpenteri Novokshonov 1995
†Protohymen novokshonovi Pecharová and Prokop 2018
Invalid names: Pseudohymen Martynov 1932 [synonym], Pseudohymenopsis Zalessky 1956 [synonym]
Fm. †Scytohymenidae Martynov 1937
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G. †Oceanoptera Shcherbakov 2009
G. †Tshekardohymen Rohdendorf 1940