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 Hepadnaviridae
               Genus Orthohepadnavirus
                 1 Tent-making bat hepatitis B virus
                 2.1.1 Woodchuck hepatitis virus
                 2.1.2 Ground squirrel hepatitis virus
                 2.2.1.1 Long-fingered bat hepatitis B virus
                 2.2.1.2.1 Pomona bat hepatitis B virus
                 2.2.1.2.2 Roundleaf bat hepatitis B virus
                 2.2.2.1.1 Woolly monkey hepatitis B virus
                 2.2.2.1.2 Capuchin monkey hepatitis B virus
                 2.2.2.2 Hepatitis B virusᵀ