Phylum Amoebozoa Lühe, 1913
   Subphylum Conosa Cavalier-Smith, 1998 see Infraphylum Conosa Cavalier-Smith, 1998
     Infraphylum Mycetozoa de Bary, 1859 ex Rostafinski, 1873 see Superclass Mycetozoa de Bary, 1859 ex Rostafinski, 1873
       Class Myxogastrea Fries, 1829
         Order Echinosteliida Martin, 1961
           1 Family Echinosteliidae Rostafinski, 1873
           2 Family Clastodermidae C.J. Alexopoulos & T.E. Brooks, 1971