Kingdom Protozoa Goldfuss, 1818 - protozoa
   Subkingdom Neozoa Cavalier-Smith, 1993 see Kingdom Protozoa Goldfuss, 1818
     Infrakingdom Neomonada Cavalier-Smith, 1997
       Phylum Neomonada Cavalier-Smith, 1997
         Subphylum Mesomycetozoa Herr, Ajello, Taylor, Arseculeratne & Mendoza, 1999
           Class Mesomycetozoea Ajello & Mendoza, 2000 see Class Ichthyosporea Cavalier-Smith, 1998
             Order Ichthyophonida Cavalier-Smith, 1998
               1 Genus Amoebidium Cienk. (1861) see Genus Amoebidium Cienkowski, 1861
               2 Genus Anurofeca Baker, Beebee & Ragan, 1999
               3 Genus Ichthyophonus Plehn & Mulsow, 1911
               4 Genus Pseudoperkinsus Figueras et al., 2000 see Genus Sphaeroforma Jøstensen et al., 2002
               5 Genus Psorospermium Hilgendorf, 1883, nom. illeg. see Genus Psorospermis Cavalier-Smith, 2012
               6 Genus Sphaerosoma J.P. Jøstensen et al., nom. illeg. see Genus Sphaeroforma Jøstensen et al., 2002