living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokaryotae see Superkingdom Prokarya
     Kingdom Virus see [unranked] viruses
       plant viruses
         [unranked] Tobacco Necrosis Virus Group
           "tobacco necrosis virus"ᵀ
             1 "A strain"ᵀ
             2 "D strain"