1. Family Acrocirridae Banse, 1969
2. Family Cirratulidae Ryckholt, 1851
3. Family Fauveliopsidae Hartman, 1971
4. Family Flabelligeridae de Saint-Joseph, 1894
5. Family Longosomatidae Hartman, 1944
6. Family Sternaspidae Carus, 1863
7. Family Chloraemidae Quatrefages, 1849 accepted as Flabelligeridae de Saint-Joseph, 1894 (subjective synonym)
8. Family Ctenodrilidae Kennel, 1882 accepted as Ctenodrilinae Kennel, 1882 (rank reduction to Ctenodrilinae, with nominal genus within Cirratulidae molecularly)
9. Family Flotidae Buzhinskaya, 1996 accepted as Flabelligeridae de Saint-Joseph, 1894 (subjective synonym)
10. Family Helmetophoridae Hartman, 1978 accepted as Acrocirridae Banse, 1969 (subjective synonym)
11. Family Heterospionidae Hartman, 1965 accepted as Longosomatidae Hartman, 1944 (subjective synonym)
12. Family Poeobiidae Heath, 1930 accepted as Flabelligeridae de Saint-Joseph, 1894 (subjective synonym)
13. Infraorder Ctenodrilida (uncertain > nomen dubium, Superfluous name)
14. Infraorder Fauveliopsida (uncertain > nomen dubium, Superfluous name)
15. Infraorder Flabelligerida (uncertain > nomen dubium, Superfluous name)
16. Infraorder Sternaspida (uncertain > nomen dubium, Superfluous name)

 The webpage text is licensed under a Creative Commons Attribution 4.0 License