Phylum [Choanozoa] Cavalier-Smith, 1981 Class Mesomycetozoea Ajello & Mendoza, 2000 see Class Ichthyosporea Cavalier-Smith, 1998 Order Dermocystida Cavalier-Smith, 1998 Genus Sphaerothecum Arkush et al., 2003 1 Sphaerothecum destruens Arkush et al., 2003