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" ["RNA viruses"] ["positive-sense ssRNA viruses"] see [unranked] positive stranded ssRNA viruses 03.0 [[unranked] "Infectious flacherie-like viruses"] see Genus Iflavirus