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 Tectiviridae
               [Genus Tectivirusᵀ]
                 1 [Bacillus phage AP50]
                 2 [Bacillus phage Bam35]
                 3 [Enterobacteria phage PRD1ᵀ]
                 4 [Thermus phage P37-14]