life
 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
      
 Phylum Rhizopoda Dujardin, 1835 - rhizopods
 see Phylum Cercozoa Cavalier-Smith, 1998
        
 Class Lobosea (Carpenter, 1861) Cavalier-Smith, 1993
 see Subphylum Lobosa Carpenter, 1861
          
 Subclass Testacealobosa
 see Subclass Testacealobosia de Saedeleer, 1934
            
 Genus Arcella Ehrenberg, 1830
              
 Arcella polypora Penard