Family Oxytrichidae Ehrenberg, 1838
Subfamily Oxytrichinae Jankowski
01 Genus Cyrtohymena Foissner, 1987
02 Genus Gonostomum Sterki, 1878
03 Genus Notohymena Blatterer & Foissner, 1988
04 Genus Onychodromopsis Stokes, 1887
05 Genus Oxytricha Bory, 1824
06 Genus Tachysoma Stokes, 1887
07 Genus Urosoma Kowalewski, 1882
08 Genus Urosomoida Hemberger, in Foissner, 1982
09 ?Genus Australocirrus Blatterer & Foissner, 1988
10 ?Genus Parurosoma von Gelei, 1954
11 ?Genus Pseudostrombidium Horváth, 1933