Subclass Hydroidolina Collins 2000
Parent taxon: Hydrozoa according to E. Larson and D.E.G. Briggs 2023
Sister taxa: Actinulida, Delheidia, Fistulella, Graptogeitonia, Hydrocorallinae, Hydroida, Kerunia, Lemniscaterina, Likinia, Limnomedusae, Milleporidae, Milleporina, Narcomedusae, Nigriporellidae, Rhizostromella, Roseoporella, Siphonophorida, Sphaeractinida, Spongiomorphida, Stoliczkiella, Stylasterina, Trachylinida, Tubulariae, Tubuloparietes
Subtaxa: Anthoathecata
Ecology: stationary epifaunal carnivore-suspension feeder