†Spriggia
Parent taxon: Hydrozoa according to J. J. Sepkoski 2002
Sister taxa: Actinulida, Chondrophorina, Delheidia, Eoporpita, Fistulella, Graptogeitonia, Hydrocorallinae, Hydroida, Jillua, Lemniscaterina, Likinia, Lovcenipora, Milleporidae, Milleporina, Ovatoscutum, Plumalina, Rhizostromella, Roseoporella, Siphonophorida, Sphaeractinida, Spongiomorphida, Stoliczkaria, Stoliczkiella, Stylasterina, Trachylinida, Tubulariae
Subtaxa: none
Ecology: stationary intermediate-level epifaunal osmotroph