[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 Hexactinellida Schmidt, 1870 - hexactinellids
         1 Genus †Azyrtalia Nazarov, 1973
         2 Genus †Calcihexactina Sdzuy, 1969
         3 Genus †Hunanospongia Qian & Ding, 1988
         4 Genus †Protospongia Salter, 1864