[organisms]
see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Phylum Porifera Grant, 1836 - sponges
Class Hexactinellida Schmidt, 1870 - hexactinellids
Subclass Hexasterophora Schulze, 1886
Order Lyssacinosa Zittel, 1877
see Order Lyssacinosida Zittel, 1877
Family Leucopsacidae Ijima, 1898
Genus Oopsacas Topsent, 1927