Order Siphonophorida
Parent taxon: Hydrozoa according to J. J., Jr. Sepkoski 2002
Sister taxa: Actinulida, Delheidia, Fistulella, Graptogeitonia, Hydrocorallinae, Hydroida, Kerunia, Lemniscaterina, Likinia, Limnomedusae, Milleporidae, Milleporina, Narcomedusae, Nigriporellidae, Plumalina, Rhizostromella, Roseoporella, Sphaeractinida, Spongiomorphida, Stoliczkiella, Stylasterina, Trachylinida, Tubulariae, Tubuloparietes
Subtaxa: Protolyella Velellidae
Ecology: nektonic carnivore-suspension feeder
Distribution: