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 Phaeocalpida Haeckel, 1887
           Family Castanellidae Haeckel, 1887
             Genus Castanella Haeckel, 1879, nom. nud.