Phylum [Choanozoa] Cavalier-Smith, 1981
   Class Mesomycetozoea Ajello & Mendoza, 2000 see Class Ichthyosporea Cavalier-Smith, 1998
     Order Dermocystida Cavalier-Smith, 1998
       1 Genus Dermocystidium Pérez, 1908
       2 Genus Amphibiocystidium Pascolini et al., 2003
       3 Genus Rhinosporidium Minchin & Fantham, 1905
       4 Genus Sphaerothecum Arkush et al., 2003