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"
             Realm Riboviria
               Family Totiviridae
                 Genus Totivirusᵀ
                   1 Saccharomyces cerevisiae virus L-Aᵀ
                   2 Saccharomyces cerevisiae virus LBCLa
                   3 Scheffersomyces segobiensis virus L
                   4 Tuber aestivum virus 1
                   5 Ustilago maydis virus H1
                   6 Xanthophyllomyces dendrorhous virus L1A
                   7 Xanthophyllomyces dendrorhous virus L1B