Orthocoronavirinae Transmission electron micrograph (TEM) of avian infectious bronchitis virus Illustration of the morphology of coronaviruses; the club-shaped viral spike peplomers, colored red, create the look of a corona surrounding the virion when observed with an electron microscope. Virus classification (unranked): Virus Realm: Riboviria Kingdom: Orthornavirae Phylum: Pisuviricota Class: Pisoniviricetes Order: Nidovirales Family: Coronaviridae Subfamily: Orthocoronavirinae Genera[1] Alphacoronavirus Betacoronavirus Gammacoronavirus Deltacoronavirus Synonyms[2][3][4] Coronavirinae