†order Operculospongia Flügel 1975 (demosponge)
Parent taxon: Demospongea according to B. Senowbari-Daryan et al. 2007
Sister taxa: Aplysinofibra, Astrophorida, Ceractinomorpha, Chaetetida, Choristida, Clavulina, Coniculospongia, Consinocodium, Dictyoceratida, Epipolasida, Ginkgospongia, Guadalupiida, Haplosclerida, Homoscleromorpha, Ichnospongia, Incrustospongia, Infexiostella, Janussenia, Karatubulus, Lithistida, Metschnikowia, Offella, Paraaplysinofibria, Permosphincta, Poecilosclerida, Protohyalostelia, Protomonaxonida, Reniera, Riasanospongia, Sphaeriella, Tabasiidae, Tabulospongida, Tetractinomorpha, Trichospongia, Verongiida, Verticillitida
Subtaxa: Khmeriidae
Ecology: stationary intermediate-level epifaunal suspension feeder