Class Lobosea (Carpenter, 1861) Cavalier-Smith, 1993 see Subphylum Lobosa Carpenter, 1861
Count: [g] 4o;13f;43g;82s
   Subclass Gymnamoebia (Haeckel, 1862) Cavalier-Smith, 1993 see [unranked] Gymnamoebae
  Count: [g] 4o;12f;40g;81s
     Order Leptomyxida Pussard & Pons, 1976
    Count: [g] 4f;7g;10s
       Suborder Rhizoflabellina Page, 1987 see Order Leptomyxida Pussard & Pons, 1976
      Count: [g] 2f;5g;9s
         1 Family Flabellulidae Bovee, 1970
        Count: [g] 3g;5s
         2 Family Leptomyxidae Pussard & Pons, 1976
        Count: [g] 2g;4s