Domain Eucaryota
   Subdomain Amoebota Doweld (2001)
     Kingdom Spongiobiota Doweld, 2001 [monotypic]
       Subkingdom Spongiobiotina Doweld, 2001 [monotypic]
         Phylum Spongiozoa Doweld, 2001
           Subphylum Spongiozoina Doweld, 2001
             1 Class Spongiatea Doweld, 2001
             2 Class Euplectellatea Doweld, 2001
             3 Class Ceratoporellatea Doweld, 2001