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"
             Realm Riboviria
               Order Picornavirales
                 Family Picornaviridaeᵀ
                   Genus Cosavirus
                     1 Cosavirus D
                     2.1 Cosavirus E
                     2.2.1 Cosavirus B
                     2.2.2.1 Cosavirus Aᵀ
                     2.2.2.2 Cosavirus F