| Entodinium triacum (Buisson, 1923) |
| Entodinium tricuspis Chavarría, 1933 |
| Eodinium Kofoid & MacLennan, 1932 |
| Eodinium lobatum Kofoid & MacLennan, 1932 |
| Eodinium posterovesiculatum (Dogiel, 1927) |
| Eodinium rectangulatum Kofoid & MacLennan, 1932 |
| Epidinium Crawley, 1923 |
| Epidinium caudatum (Fiorentini, 1889) |
| Epidinium ecaudatum (Fiorentini, 1889) |
| Eudiplodinium Dogiel, 1927 |
| Eudiplodinium maggii (Fiorentini, 1889) |
| Eudiplodinium medium Awerinzew & Mutafowa, 1914 |
| Eudiplodinium rostratum (Fiorentini, 1889) |
| Metadinium Awerinzew & Mutafowa, 1914 |
| Metadinium afinne (Dogiel & Fedorowa, 1925) |
| Metadinium medium Awerinzew & Mutafowa, 1914 |
| Metadinium ypsilon (Dogiel, 1925) |
| Ophryoscolecidae Stein, 1859 |
| Ophryoscolex Stein, 1859 |
| Ophryoscolex caudatus Eberlein, 1895 |