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
               "protists" incertae sedis
                 Group †Acritarcha Evitt, 1963, incertae sedis [polyphyletic] - acritarchs
                   Genus †Comasphaeridium Staplin, Jansonius & Pocock, 1965
                     †Comasphaeridium brevispinosum (Lister, 1970) Mullins (2001)
                     †Comasphaeridium cometesᵀ (Valensi, 1949)
                     †Comasphaeridium williereae (Deflandre & Deflandre-Rigaud, 1965 ex Lister, 1970) Sarjeant & Stancliffe (1994)