Hexactinellida - Hexasterophora
Parent taxon: Hexactinellida according to R. M. Finks and J.K. Rigby 2004
See also Bambach et al. 2007, Rigby and Albi 1996, Rigby and Mohanti 1993, Senowbari-Daryan and Rigby 2015 and Worheide et al. 2012
Sister taxa: Acanothyia, Acanothyra, Amphidiscophora, Antrispongia, Australispongia, Baccispongia, Bothroconis, Chelispongia, Crucispongia, Diplopleuriana, Farreopsis, Hemidiagoniella, Heterostella, Hodsia, Innaecoeliida, Kometia, Lonsda, Lychniscosa, Lyssacinosa, Lyssakida, Nepheliospongia, Nephelispongia, Pachylepisma, Pinnatispongia, Rossellimorpha, Rugosoderma, Sceptrulophora, Sestrocladiella, Silicunculus, Solactiniella, Solusrectus, Spongus, Stromatidiidae
Subtaxa: Hexactinosa Lychniscosida
Ecology: stationary intermediate-level epifaunal suspension feeder