Species (17)
- Diplozoon markewitschi Bychowski, Gintovt & Koval 1964
- Polystomum megastomum
- Diplozoon parabotum
- Polystoma integerrimum Fröhlich 1791
- Polystomum integerrimum
- Oculotrema hippotami
- Rajonchocotyla prenanti
- Diclidophora merlangi
- Axine belones
- Mazocraes alosae
- Hexastoma lintoni
- Kuhnia scombri
- Diplozoon paradoxum Nordmann
- Diplozoon paradoxus Nordmann 1832
- Diplozoon megan Bychowski & Nagibina
- Diplozoon homoion Bychowski & Nagibina
- Discocotyle sagittata Diesing