Phylum [Porifera] Grant, 1836 - sponges Class Demospongiae Sollas, 1885 - demosponges 1 Subclass Heteroscleromorpha Cárdenas, Pérez & Boury-Esnault, 2012 2 Subclass Haploscleromorpha Cárdenas, Pérez & Boury-Esnault, 2012 [monotypic] 3 Subclass Keratosa Grant, 1861 4 Subclass Myxospongiae Haeckel, 1866