Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               ["Protista" Haeckel, 1866, incertae sedis] see Kingdom protists
                 [Grade "protozoa" Goldfuss, 1818 - protozoans]
                   [Genus Cryptaulax Skuja (1948)] see Genus Rhynchobodo J.B. Lackey, 1940
                     [Cryptaulax marina Throndsen, 1969] see Hemistasia phaeocysticola (A. Scherffel, 1900) M. Elbrächter & E. Schnepf, in M. Elbrächter et al., 1996