RNA viruses of the phylum Pisuviricota are characterized by homologous RNA-dependent-RNA polymerases (Pfam RdRp_1 family). Most capsids are icosahedral with T=1 to T=4 symmetry.
(Pfam RdRp_1 family; VPG cap)
Order: Picornavirales
(Pfam RdRp_1 family; VPG cap?) Order: Sobelivirales
(Pfam RdRp_1 family; Nido-type capping) Order: Nidovirales
Order: Stellavirales