†family Leucopsacasiidae Ijima 1903 (glass sponge)
Parent taxon: Lyssacinosa according to A. Pisera and P. Busquets 2002
Sister taxa: Brachiospongioidea, Brevicirrus, Euplectellidae, Flexuospiculata, Lumectospongiidae, Stauractinellidae, Acanthospongia, Calathospongia, Caulophacus, Colpospongia, Crateromorpha, Euplectella, Foerstella, Lasiothrix, Malumispongium, Oncosella, Opeamorphus, Palaeosaccus, Proeuplectella, Pyritonema, Regardrella, Rosella, Testispongia, Rossellidae, Leucopsacidae
Subtaxa: Reguantella
Ecology: stationary epifaunal suspension feeder