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 Papillomaviridae
               [Genus Papillomavirusᵀ] see Genus Kappapapillomavirus
                 0 [bovine papillomavirus ICTV 7th Report (2000)]
                 0 [human papillomavirus ICTV 7th Report (2000)]
                 0 [ovine papillomavirus ICTV 7th Report (2000)]
                 1.0 ["rabbit (Shope) papilloma virus"ᵀ] see Cottontail rabbit papillomavirus