organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Animalia Linnaeus, 1758 - animals
     Phylum Porifera Grant, 1836 - sponges
       Genus Corticum
       1 Subphylum Symplasma Reiswig & Mackie, 1983 see Class Hexactinellida Schmidt, 1870
       2 Subphylum Cellularia Reiswig & Mackie, 1983 see Phylum Porifera Grant, 1836