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]
           ?"viruses"
             Realm Riboviria
               Order Picornavirales
                 Family Marnaviridae
                   Genus Bacillarnavirus
                     1 Chaetoceros tenuissimus RNA virus 01
                     2.1 Rhizosolenia setigera RNA virus 01ᵀ
                     2.2 Chaetoceros socialis forma radians RNA virus 1