[viruses]
   Realm Riboviria
     01 Phylum Negarnaviricota
     02 Order Nidovirales
     03 Order Picornavirales
     04 Order Tymovirales
     05 Family Alphatetraviridae
     06 Family Alvernaviridae [monotypic]
     07 Family Amalgaviridae
     08 Family Astroviridae
     09 Family Avsunviroidae
     10 Family Barnaviridae [monotypic]
     11 Family Benyviridae [monotypic]
     12 Family Birnaviridae
     13 Family Botourmiaviridae
     14 Family Bromoviridae
     15 Family Caliciviridae
     16 Family Carmotetraviridae [monotypic]
     17 Family Chrysoviridae
     18 Family Closteroviridae
     19 Family Cystoviridae [monotypic]
     20 Family Endornaviridae
     21 Family Flaviviridae
     22 Family Hepeviridae
     23 Family Hypoviridae [monotypic]
     24 Family Kitaviridae
     25 Family Leviviridae
     26 Family Luteoviridae
     27 Family Matonaviridae [monotypic]
     28 Family Megabirnaviridae [monotypic]
     29 Family Narnaviridae
     30 Family Nodaviridae
     31 Family Partitiviridae
     32 Family Permutotetraviridae [monotypic]
     33 Family Picobirnaviridae [monotypic]
     34 Family Pospiviroidae
     35 Family Potyviridae
     36 Family Quadriviridae [monotypic]
     37 Family Reoviridae
     38 Family Sarthroviridae [monotypic]
     39 Family Solemoviridae
     40 Family Solinviviridae
     41 Family Togaviridae [monotypic]
     42 Family Tombusviridae
     43 Family Totiviridae
     44 Family Virgaviridae
     45 Genus Albetovirus
     46 Genus Aumaivirus [monotypic]
     47 Genus Botybirnavirus [monotypic]
     48 Genus Deltavirus [monotypic]
     49 Genus Idaeovirus
     50 Genus Papanivirus [monotypic]
     51 Genus Sinaivirus
     52 Genus Virtovirus [monotypic]