eukaryotes see Domain Eukaryota Chatton, 1925
   Kingdom Protozoa Goldfuss, 1818 [paraphyletic] - protozoa
     Subkingdom Sarcomastigota Cavalier-Smith, 1983 [paraphyletic] see [unranked] dorsates Cavalier-Smith, 2021
       Phylum Amoebozoa Lühe, 1913
         Subphylum Conosa Cavalier-Smith, 1998 see Infraphylum Conosa Cavalier-Smith, 1998
           Infraphylum Semiconosia Cavalier-Smith, 2012
             Parvphylum Mycetozoa de Bary, 1859 ex Rostafiński, 1873 - slime moulds see Superclass Mycetozoa de Bary, 1859 ex Rostafinski, 1873
               Superclass Protostelia Olive, 1970 [monotypic]
                 Class Protostelea Alexopoulos & Mims, 1979 [monotypic]
                   Order Protostelida Olive & Stoianovitch, 1966 [paraphyletic?]
                     Family Protosteliidae Olive, 1962
                       Genus Planoprotostelium Olive & Stoianovitch, 1971