[viruses]
   Realm Riboviria
     Order Nidovirales
       Suborder Tornidovirineae [monotypic]
         Family Tobaniviridae
           Subfamily Serpentovirinae
             Genus Sectovirus [monotypic]
               Subgenus Sanematovirus [monotypic]
                 Sectovirus 1ᵀ