Phylum [Choanozoa] Cavalier-Smith, 1981
   Class Mesomycetozoea Ajello & Mendoza, 2000 see Class Ichthyosporea Cavalier-Smith, 1998
     Order Ichthyophonida Cavalier-Smith, 1998
       1.1 Genus Amoebidium Cienk. (1861) see Genus Amoebidium Cienkowski, 1861
       1.2 Genus Ichthyophonus Plehn & Mulsow, 1911
       2.1.1.1 (Isolate) LKM51
       2.1.1.2 Genus Anurofeca Baker, Beebee & Ragan, 1999
       2.1.2.1 Genus Pseudoperkinsus Figueras et al., 2000 see Genus Sphaeroforma Jøstensen et al., 2002
       2.1.2.2 Genus Sphaeroforma Jøstensen et al., 2002
       2.2 Genus Psorospermium Hilgendorf, 1883, nom. illeg. see Genus Psorospermis Cavalier-Smith, 2012