[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Protista (Haeckel, 1866) - protists
     Phylum Protozoa (Goldfuss, 1818) C.T. von Siebold, 1854 see Kingdom Protozoa Goldfuss, 1818
       Subphylum Sarcomastigophora see Phylum Sarcomastigophora Honigberg & Balamuth, 1963
         Class Sarcodina
           Subclass Rhizopoda see Phylum Rhizopoda Dujardin, 1835
             Order Arcellinida Kent, 1880 - shelled lobosid amebas
               1 Genus Arcella Ehrenberg, 1830
               2 Genus Difflugia Leclerc, 1815