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 Ackermannviridae
                 Subfamily Cvivirinae
                   Genus Viunavirus
                     1 Escherichia virus ECML4
                     2 Salmonella virus Marshall
                     3 Salmonella virus Maynard
                     4 Salmonella virus SJ2
                     5 Salmonella virus STML131
                     6 Salmonella virus ViIᵀ