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 Herpesvirales
               Family Alloherpesviridae
                 Genus Ictalurivirus
                   1 Acipenserid herpesvirus 2
                   2.1 Ictalurid herpesvirus 1ᵀ
                   2.2 Ictalurid herpesvirus 2