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 Poxviridae
               Subfamily Chordopoxvirinae
                 Genus Orthopoxvirus
                   1.1 Raccoonpox virus
                   1.2.1 Skunkpox virus
                   1.2.2 Volepox virus
                   2.1 Cowpox virus
                   2.2.1 Ectromelia virus
                   2.2.2.1.1 Monkeypox virus
                   2.2.2.1.2 Vaccinia virusᵀ
                   2.2.2.2.1.1 Camelpox virus
                   2.2.2.2.1.2 Taterapox virus
                   2.2.2.2.2 Variola virus