Cyclocoelidae Stossich, 1902
Cyclocoelum brasilianum Stossich, 1902
Cyclocoelum jaenschi Johnston & Simpson, 1940
Cyclocoelum kossacki (Witenberg, 1923)
Cyclocoelum microstomum (Creplin, 1829)
Cyclocoelum mutabile (Zeder, 1800)
Cyclocoelum obscurum (Leidy, 1887)
Cyclocoelum oculeum
Cyclocoelum polonicum Machalska, 1980
Cyclocoelum theophile Dollfus, 1948