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 Order Picornavirales Family Picornaviridaeᵀ Genus Parechovirus 1 Parechovirus D 2.1.1 Parechovirus C 2.1.2 Parechovirus B 2.2 Parechovirus Aᵀ