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"
             Family Fuselloviridae
               Genus Alphafusellovirus
                 1 Sulfolobus spindle-shaped virus 1ᵀ
                 2 Sulfolobus spindle-shaped virus 2
                 3 Sulfolobus spindle-shaped virus 4
                 4 Sulfolobus spindle-shaped virus 5
                 5 Sulfolobus spindle-shaped virus 7
                 6 Sulfolobus spindle-shaped virus 8
                 7 Sulfolobus spindle-shaped virus 9