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 Nidovirales
                 1.1.1.1 Suborder Monidovirineae [monotypic]
                 1.1.1.2 Suborder Abnidovirineae [monotypic]
                 1.1.2.1 Suborder Ronidovirineae
                 1.1.2.2 Suborder Mesnidovirineae
                 1.2 Suborder Cornidovirineae [monotypic]
                 2.1 Suborder Tornidovirineae [monotypic]
                 2.2 Suborder Arnidovirineae [monotypic]