Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] 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 vulgaris H.L. Skuja, 1948] see Rhynchobodo vulgaris (H.L. Skuja, 1948) C. Bernard, A.G.B. Simpson & D.J. Patterson, 2000