Corticovirus

The Corticovirus or Corticoviridae are a family of phages that consist of a round, icosahedral, non-enveloped capsid of a diameter of 60 nm and an internal lipid membrane located between outer and inner protein shell. The shells are composed of three layers which surfaces reveals a pattern with distinctive features, including bush-like spikes protruding from the twelve vertices.

Genome
The genome is not segmented, constitutes 13% of the virus's weight and contains a single molecule of circular, supercoiled, double-stranded DNA of 9500-12000 nucleotides in length. The genome has a g + c content of 43%.