The 3-D structure of the virus, known as Seneca Valley Virus-001, reveals that it is unlike any other known member of the Picornaviridae viral family, and confirms its recent designation as a separate genus “Senecavirus.” The new study reveals that the virus’s outer protein shell looks like a craggy golf ball - one with uneven divets and raised spikes - and the RNA strand beneath it is arranged in a round mesh rather like a whiffleball.