Kingdom Fungi R.T.Moore (1980) - fungi
Phylum Rozellomycota Doweld (2013)
1 Class Microsporidea Corliss & Levine, 1963
2 Class Rudimicrosporea Sprague, 1977 [monotypic]
3 Genus Mitosporidium Haag, James, Pombert, Larsson, Schaer, Refardt & Ebert, 2014, incertae sedis [monotypic]
4 Genus Nucleophaga P.A. Dang. (1895), incertae sedis
5 Genus Paramicrosporidium Corsaro, Walochnik, Venditti, J. Steinm., K.-D. Müll. & R. Michel (2014), incertae sedis
6 Genus Rozella Cornu (1872), incertae sedis