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
               "protists" incertae sedis
                 Genus Meteora K. Hausmann et al., 2002 [monotypic]
                 1 Group †Acritarcha Evitt, 1963, incertae sedis [polyphyletic] - acritarchs
                 2 Group †Calcitarcha G.J.M. Versteegh, T. Servais, Streng, Munnecke & Vachard (2009), incertae sedis [polyphyletic] - calcispheres
                 3 Class †Algospongia Termier, Termier & Vachard, 1977, incertae sedis
                 4 "nature uncertain"
                 5 "algal protists"
                 6 "amoeboid protists"
                 7 "free-living heterotrophic flagellates"
                 8 "parasitic protists"