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"
             Order Ligamenvirales
               Family Lipothrixviridae
                 Genus Betalipothrixvirus
                   1 Sulfolobus islandicus filamentous virusᵀ
                   2.1 Acidianus filamentous virus 9
                   2.2.1 Acidianus filamentous virus 7
                   2.2.2.1 Acidianus filamentous virus 8
                   2.2.2.2.1 Acidianus filamentous virus 3
                   2.2.2.2.2 Acidianus filamentous virus 6