After Nelson, 1994, with species from Froese & Pauly, 2001 [“The FishBase”]

<==o Cynoglossidae (etelänkielikampelat)
   |-- Symphurus [Symphurinae] [N: 57] [FB: 59]
   `--o Cynoglossinae
      |-- Cynoglossus [Arelia] Mioc. Eu. R. Oc. [N: 50] [FB: 53]
      `--o Paraplagusia [N: 3] [FB: 5]
         |-- P. bilineata (Bloch, 1787) (Doublelined tonguesole)
         |-- P. blochii (Bleeker, 1851) (Bloch's tonguesole)
         |-- P. japonica (Temminck & Schlegel, 1846) (Black cow-tongue)
         |-- P. longirostris Chapleau, Renaud & Kailola, 1991 (Long-snouted tongue sole)
         `-- P. sinerama Chapleau & Renaud, 1993 (Dusky tongue sole)

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