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 Family Hypoviridae [monotypic] Genus Hypovirusᵀ 1 Cryphonectria hypovirus 1ᵀ 2 Cryphonectria hypovirus 2 3 Cryphonectria hypovirus 3 4 Cryphonectria hypovirus 4