organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain eukaryotes see Domain Eukaryota Chatton, 1925
     amoeboid protists
       Order Arcellinida Kent, 1880 - shelled lobosid amebas
         Suborder Arcellina Haeckel, 1894 see Suborder Arcellinina Haeckel, 1884
           Family Arcellidaeᵀ Ehrenberg, 1843
             Genus Pyxidicula Ehrenberg, 1836