Parent taxon: Porifera according to C. W. Stearn et al. 1999
See also Sepkoski 2002
Sister taxa: Adriatella, Aetholicopalla, Alasonia, Aphlebospongia, Archaeocyatha, Asteriscosella, Astrostylopsis, Axiotubullina, Bacatocyathus, Bicyathus, Bortepesia, Calcarea, Cassianostroma, Ceraostroma, Circopora, Clathrispongia, Codites, Coenostella, Coniatopenia, Cornuaspongia, Coronacollina, Cotyliscus, Cribricyatha, Cribroscyphia, Cuneiphycus, Cupulochonia, Cupulospongia, Cyclospongia, Cylicopsis, Demospongiae, Desmopora, Diestosphecion, Diplostomella, Disjectoporidae, Disparistromaria, Dulmius, Dulmius innovatus, Dyocopanon, Ellipsactinia, Eocoryne, Eocyathispongia, Fedomia, Floriana, Glenodictyum, Helicolocellus, Heteractinida, Hexactinellida, Holocoelia, Homoscleromorpha, Lamellata, Lamellispongia, Limnoretheles, Lithopora, Megalelasma, Megastroma, Microcoryne, Milleporidium, Monotheles, Myrioporina, Nabaviella, Nelumbosium, Nelumbosium primum, Oligoplagia, Palaeophragmodictya, Paratubuliella, Parksia, Pharetronida, Pilosphecion, Plectinia, Polyactinellidae, Polycnemiseudea, Psephidia, Pulchrilaminida, Puppispongia, Puppispongia prostrema, Radicispongia, Rauffia, Reticullina, Rosellatana, Rugoconites, Sclerospongiae, Scribroporella, Scyphia, Shitangspongia, Sinoflabrum, Siphostroma, Sparsispongia, Sphaeractinia, Sphinctozoa, Spirocyathidae, Sporadoporidium, Steinerella, Stromatofungia, Stromatoporellata, Stromatoporellina, Stromatoporina, Stromatostroma, Taraxaculum, Textispongia, Thalamospongia, Thectardis, Toriscodermia, Tosastroma, Tragos, Trammeria, Tubispongia, Tubuliella, Xizangstromatopora
Subtaxa: Actinostromatida Amphiporida Andenipora Clathrodictyida Clavidictyon Diparistomaria Ecclimadictyidae Forolina Labechiida Lamellopora Mixtusdictyon Perplexostroma Plumatalina Praeidiostroma Pseudoactinostroma Sergaelites Shirdagopora Stromatoporellida Stromatoporida Syringostromatida