Phylum Myxozoa Grassé, 1970, incertae sedis - myxozoans see Subphylum Myxozoa Grassé, 1970
   Class Malacosporea E.U. Canning et al., 2000
     Order Malacovalvulida E.U. Canning et al., 2000
       Genus Tetracapsula E.U. Canning et al., 1996 see Genus Buddenbrockia O. Schröder, 1910