bamfordvirae bamfordvirae bamfordvirae is a kingdom of viruses. this kingdom is recognized for its use of double jelly roll major capsid proteins. it was formerly known as the prd1-adenovirus lineage. the kingdom is named after dennis h. bamford who first promoted the evolutionary unity of all viruses encoding double jelly-roll major capsid proteins. bamfordvirae virus classification (unranked): virus realm: varidnaviria kingdom: bamfordvirae subtaxa see text the genetic network linking various types of bamfordvirae viruses and selfish genetic elements, represented by labeled circles. links between circles are color-coded by the gene whose sequence homology establishes the link. taxonomy the following phyla are recognized: nucleocytoviricota preplasmiviricota