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 Caudovirales
               Family Siphoviridae
                 Genus Slashvirus
                   1 Bacillus virus Slashᵀ
                   2 Bacillus virus Stahl
                   3 Bacillus virus Staley
                   4 Bacillus virus Stills