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
               [Bacillus phage phiNS11]
               0 [[unranked] "PRD1 phage group"] see Genus Tectivirus
               0 [Genus Tectivirusᵀ]
               1.1 Genus Alphatectivirus
               1.2 Genus Gammatectivirus [monotypic]
               2 Genus Betatectivirus