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 Caudovirales
               1 Family Podoviridae
               2 Family Siphoviridae
               3.1 Family Herelleviridae
               3.2 Family Myoviridae
               3.3 Family Ackermannviridae