Most were originally isolated from soil samples obtained in the United States.[3]U. unicorn was originally sampled in the Great Dismal Swamp.[4]U. kreuger was originally found in soil at Hope College and named after an educator.[5]U. bryler was originally found in Spokane, Washington and named as a blend word of the discoverers given names, Brian and Tyler.[6]U. ximenita was originally found in soil in Fort Collins, Colorado.[7]
^"Virus Taxonomy: 2023 Release"(html). International Committee on Taxonomy of Viruses (ICTV). August 2023. Archived from the original on 20 March 2020. Retrieved 19 July 2024.