Order Actinulida Swedmark and Teissier 1959
Parent taxon: Hydrozoa according to R. K. Bambach et al. 2007
Sister taxa: Delheidia, Fistulella, Graptogeitonia, Hydrocorallinae, Hydroida, Kerunia, Lemniscaterina, Likinia, Limnomedusae, Milleporidae, Milleporina, Narcomedusae, Nigriporellidae, Plumalina, Rhizostromella, Roseoporella, Siphonophorida, Sphaeractinida, Spongiomorphida, Stoliczkiella, Stylasterina, Trachylinida, Tubulariae, Tubuloparietes
Subtaxa: none
Ecology: facultatively mobile infaunal carnivore
Distribution: there are no occurrences of Actinulida in the database