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
             Suborder Sphaerellarina
               Superfamily Sphaeroidae
                 Tribe Periaxoplastidiata
                   1 Family Cyrtidosphaeridae
                   2 Family Stigmosphaeridae
                   3 Family Excentrochonchidae
                   4 Family Hollandosphaeridae