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
               Order Axinellida Lévi, 1953 see Order Halichondrida Vosmaer, 1887
                 Family Desmoxyidae Hallmann, 1917 see Family Heteroxyidae Dendy, 1905
                   Genus Higginsia Higgin, 1877