Fam. Epistylididae Kahl, 1933

- Apiosoma Blanchard, 1885
- Campanella Goldfuss, 1820
- Epistylis Ehrenberg, 1830
- Heteropolaria Foissner & Schubert, 1977
- Nidula Gajewskaja, 1933 [syn. of Epistylis]
- Opisthostyla Stokes, 1886 [syn. of Rhabdostyla]
- Rhabdostyla Kent, 1881

Incertae sedis in Family Epistylididae

- Systylis Bresslau, 1919