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 Podoviridae
                 Subfamily Picovirinae
                   1 Actinomyces virus Av1
                   2 Mycoplasma virus P1
                   3.1.1 Genus Negarvirus [monotypic]
                   3.1.2 Genus Rosenblumvirus
                   3.2.1 Genus Cepunavirus
                   3.2.2 Genus Salasvirus