Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           ?viruses
             Family Papillomaviridae
               Subfamily Firstpapillomavirinae
                 Genus Gammapapillomavirus
                   Gammapapillomavirus 13