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
       Class Phaeodarea Haeckel, 1879 see Subclass Phaeodaria Haeckel, 1879
         Order Phaeogromida Haeckel, 1887
           Family Challengeridae Murray, 1885
             1 Genus Challengeria Murray, 1876
             2 Genus Challengeron Murray, 1879