Family Bougainvilliidae Lütken, 1850
Family Cordylophoridae von Lendenfeld, 1885
Family Cytaeididae L. Agassiz, 1862
Family Eudendriidae L. Agassiz, 1862
Family Heterotentaculidae Schuchert, 2010
Family Hydractiniidae L. Agassiz, 1862
Family Magapiidae Schuchert & Bouillon, 2009
Family Oceaniidae Eschscholtz, 1829
Family Pandeidae Haeckel, 1879
Family Protiaridae Haeckel, 1879
Family Trichydridae Hincks, 1868

Family Russelliidae Kramp, 1957 accepted as Heterotentaculidae Schuchert, 2010 (invalid name)

marine, brackish, fresh, terrestrial

recent + fossil

Kühn, A., 1913. Entwicklungsgeschichte und Verwandschaftsbeziehungen der Hydrozoen. I. Teil: Die Hydroiden. Erg. Fortschr. Zool. 4 1-2: 1-284. [details]   

WRiMS (2022). Filifera. Accessed at: https://www.marinespecies.org/introduced/aphia.php?p=taxdetails&id=16352 on 2023-02-06

Rius, M.; Ahyong, S.; Bieler, R.; Boudouresque, C.; Costello, M. J.; Downey, R.; Galil, B. S.; Gollasch, S.; Hutchings, P.; Kamburska, L.; Katsanevakis, S.; Kupriyanova, E.; Lejeusne, C.; Marchini, A.; Occhipinti, A.; Pagad, S.; Panov, V. E.; Poore, G. C. B; Robinson, T. B.; Sterrer, W.; Turon, X.; Valls Domedel, G.; Verleye, T.; Vieira, L. M.; Willan, R. C.; Yeo Chong Jinn, D.; Zhan, A. (2023). World Register of Introduced Marine Species (WRiMS). Filifera. Accessed at: https://marinespecies.org/introduced/aphia.php?p=taxdetails&id=16352 on 2023-02-06

[taxonomic tree]  [list species]