[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   [metazoans] Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758
     Phylum Porifera Grant, 1836 - sponges
       Class Demospongea Sollas, 1875 see Class Demospongiae Sollas, 1885
         Genus †Protohyalostelia Chapman, 1940