living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Parazoa (Sollas, 1884) see Phylum Porifera Grant, 1836
         Phylum Porifera Grant, 1836 - sponges
           Class Demospongiae Sollas, 1885 - demosponges
             Subclass Tetractinomorpha Lévi, 1953 see Class Demospongiae Sollas, 1885
               1 Order Astrophorida Sollas, 1888 see Suborder Astrophorina Sollas, 1888
               2 Order Spirophorida Bergquist & Hogg, 1969 see Suborder Spirophorina
               3 Order Lithistida Schmidt, 1870 - lithistids see Subclass Lithistida Schmidt, 1870
               4 Order Hadromerida Topsent, 1894
               5 Order Axinellida Lévi, 1953 see Order Halichondrida Vosmaer, 1887
               6 Order Agelasida Hartman, 1980