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 Astrophorida Sollas, 1888 see Suborder Astrophorina Sollas, 1888
                 Family Pachastrellidae Carter, 1875
                   1 Genus Pachastrella Schmidt, 1868
                   2 Genus Poecillastra Sollas, 1888
                   3 Genus Sphinctrella Schmidt, 1870, nom. illeg. see Genus Sphincterella de Laubenfels, 1936
                   4 Genus Triptolemus Sollas, 1888, nom. illeg. see Genus Triptolemma de Laubenfels, 1955
                   5 Genus Dercitus Gray, 1867