Classification of the family Platyorthidae
Fm. †Platyorthidae Harper et al. 1969
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G. †Diceromyonia Wang 1949
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†Diceromyonia crassa Howe 1965
†Diceromyonia storeya Okulitch 1943
†Diceromyonia tersa Sardeson 1892
Invalid names: Diceromyonia ciona Li and Copper 2006 [nomen dubium]