Domain Eucaryota
   Subdomain Chlorota Doweld (2001)
     Kingdom Euglenobiota Leedale ex Doweld (2001)
       Subkingdom Percolobiotina Doweld, 2001
         1 Phylum Nucleariozoa Mikrjukov, 2000 [monotypic]
         2 Phylum Tetramitozoa Dillon, 1963 [monotypic]
         3 Phylum Percolozoa Cavalier-Smith, 1992