Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [[crown] organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           [Superkingdom Eukarya Chatton, 1925] see Domain Eukaryota Chatton, 1925
             [Kingdom Protoctista Hogg, 1860]
               01 [Phylum Karyoblastea Margulis, 1974]
               01.0 [Phylum Caryoblastea] see Phylum Karyoblastea Margulis, 1974
               02 [Phylum Metamonadea Grassé, in Grassé, 1952] see Phylum Metamonada Grassé, 1952
               03 [Phylum Archaeprotista]
               04 [Phylum Microspora Sprague, 1977 - microsporans] see Phylum Microsporida Balbiani, 1882
               05 ["Amitochondriates"]
               06 [Phylum Chlorarachnida Hibberd & Norris, 1984 [monotypic]] see Order Chlorarachnida Hibberd & Norris, 1984
               07 [Phylum Rhizopoda Dujardin, 1835 - rhizopods] see Phylum Cercozoa Cavalier-Smith, 1998
               08 [Phylum Acrasea Olive, 1975] see Class Mycetozoa de Bary, 1859
               09 [Phylum Dictyostelida] see Order Dictyosteliida L. Olive, 1970
               11 [Phylum Granuloreticulosa de Saedeleer, 1934] see Phylum Foraminifera d'Orbigny, 1826
               12 [Phylum Xenophyophora Schulze, 1904]
               13 [Phylum "plasmodial slime molds"] see Class Mycetozoa de Bary, 1859
               14 [Phylum Dinomastigota Margulis, 1996] see Phylum Dinoflagellata Engl. (1903)
               18 [Phylum Haptomonada]
               18 [Phylum "Prymnesiophyta" Hibberd (1976), nom. inval. - haptophytes] see Phylum Prymnesiophyta Hibberd ex Doweld (2001)
               19 [Phylum Cryptomonada] see Order Cryptomonadida Senn, 1900
               21 [Phylum Euglenida Bütschli, 1884]
               22 [Phylum Discomitochondria]
               23 [Phylum Raphidophyta] see Phylum Ochrophyta Caval.-Sm. (1995)
               24 [Phylum Chrysomonada] see [unranked] chrysophytes
               25 [Phylum Xanthophyta Allorge, in Fritsch (1935)] see Class Xanthophyceae P. Allorge ex Fritsch (1935)
               27 [Phylum "diatoms"] see Subphylum Diatomeae Caval.-Sm. (1995)
               27.0 [Division Bacillariophyta Engl. & Gilg (1919)] see Phylum Bacillariophyta Engl. & Gilg (1919)
               28 [Phylum Phaeophyta Kjellman (1891)] see Phylum Phaeophycota
               29 [Class Heterocontae] see Phylum Heterokonta Caval.-Sm. (1986)
               30 [Phylum Labyrinthulamycota] see Phylum Labyrinthulomycota F.C. Page (1980)
               30 [Phylum Labyrinthulata [monotypic]]
               31 [Phylum Plasmodiophora - plasmodiophorids] see Order Plasmodiophorida Cook, 1928
               33 [Phylum "Hyphochytridiomycota" Whittaker (1969), nom. nud.] see [unranked] hyphochytridiomycetes nom. vernac.
               35 [Phylum Haplospora] see Phylum Haplosporidia Caullery & Mesnil, 1899
               36.0 [Phylum Paramyxea Chatton, 1911]
               36.0 [Phylum Paramyxea Levine, in Sprague, 1979] see Phylum Paramyxa
               37 [Phylum Cnidosporidia] see Phylum Myxozoa Grassé, 1970, incertae sedis
               37 [Phylum Myxospora] see Phylum Myxozoa Grassé, 1970, incertae sedis
               39 [Phylum Conjugaphyta] see Phylum Chlorophycota
               39 [Phylum Gamophyta]
               39.0 [Phylum "Coniugatophyta" nom. null.] see Phylum Conjugatophyta Engler, 1892
               43 [Phylum Zoomastigina] see Phylum Discomitochondria
               43 [Phylum Zoomastigota]
               44 [Ellobiopsida Whisler, 1990, incertae sedis]
               44.0 [Class "ellobiopsids" incertae sedis]
               45 [Class "ebriids" incertae sedis] see [unranked] ebriids
               45.0 ["ebridians" incertae sedis] see Class ebriids
               xx [Group †Paraphyta Strother (1988)]