Orthornavirae is a kingdom of viruses that contains all viruses that have an RNA genome and encode an RNA-dpendent RNA polymerase (RdRp).[1] The kingdom includes all +ssRNA, -ssRNA, and dsRNA viruses. The group name derives from Greek ὀρθός (orthós) which means straight, rna for the type of viruses, and -virae the suffix for a virus kingdom.[2]

Virus classification e
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae

See text


Orthornavirae consists of five phyla, two incertae sedis families, and one incertae sedis genus.[1]


Incertae sedis taxaEdit


  1. ^ a b "Virus Taxonomy: 2019 Release". talk.ictvonline.org. International Committee on Taxonomy of Viruses. Retrieved 25 April 2020.
  2. ^ Koonin EV, Dolja VV, Krupovic M, Varsani A, Wolf YI, Yutin N, Zerbini M, Kuhn JH. "Proposal: Create a megataxonomic framework, filling all principal taxonomic ranks, for realm Riboviria". International Committee on Taxonomy of Viruses (ICTV). Retrieved 2020-05-21.CS1 maint: multiple names: authors list (link)