Kingdom Protoctista Hogg, 1860
   Phylum plasmodial slime molds see Class Mycetozoa de Bary, 1859
     1 Class Myxomycota Margulis, 1996 see Subclass Myxogastria Fries, 1829
     1.0 Class Myxomycetes Link (1833) see Class Myxomycetes Link, 1833
     2 Class Protostelida Olive & Stoianovitch, 1966 see Subclass Protostelia Olive, 1970
     2.0 Class protostelids see Subclass Protostelia Olive, 1970