Adams, M, Lefkowitz, E, King, A, Harrach, B, Harrison, R, Knowles, N, Kropinski, A, Krupovic, M, Kuhn, J, Mushegian, A, Nibert, M, Sabanadzovic, S, Sanfaçon, H, Siddell, S, Simmonds, P, Varsani, A, Zerbini, F, Gorbalenya, A, Davison, A, International Committee on Taxonomy of Viruses (ICTV), University of Alabama at Birmingham [ Birmingham] (UAB), Institute for Animal Health, the Pirbright Institute, Hungarian Academy of Sciences (MTA), United States Department of Agriculture (USDA), University of Guelph, Biologie Moléculaire du Gène chez les Extrêmophiles (BMGE), Institut Pasteur [Paris], National Institute of Allergy and Infectious Diseases [Bethesda] (NIAID-NIH), National Institutes of Health [Bethesda] (NIH), National Science Foundation [Arlington] (NSF), Harvard Medical School [Boston] (HMS), Mississippi State University [Mississippi], Agriculture and Agri-Food [Ottawa] (AAFC), University of Bristol [Bristol], University of Oxford [Oxford], Arizona State University [Tempe] (ASU), Universidade Federal de Vicosa (UFV), Leiden University Medical Center (LUMC), Lomonosov Moscow State University (MSU), University of Glasgow, A.R.M. is a Program Director at the U.S. National Science Foundation (NSF), his work on this project was supported in part by the NSF Independent Research and Development program, but the statements and opinions expressed herein are made in the personal capacity and do not constitute the endorsement by NSF or the government of the United States. The content of this publication does not necessarily reflect the views or policies of the US Department of Health and Human Services or of the institutions and companies affiliated with the authors. This work was supported in part through Battelle Memorial Institute’s prime contract with the US National Institute of Allergy and Infectious Diseases (NIAID) under Contract No. HHSN272200700016I. A subcontractor to Battelle Memorial Institute who performed this work is: J.H.K., an employee of Tunnell Government Services, Inc. N.J.K. is partially supported by core funding provided by the Biotechnology and Biological Sciences Research Council, UK. B.H. is partially supported by National Research, Development and Innovation Office—NKFIH, K100163. A.E.G. is partially supported by EU project EVAg 653316 and the Leids Universiteits Fonds. A.J.D. is supported by the Medical Research Council (MC_UU_12014/3). S.S. acknowledges partial support from Mississippi Agricultural and Forestry Experiment Station (MAFES)., The Pirbright Institute, Biotechnology and Biological Sciences Research Council (BBSRC), Institut Pasteur [Paris] (IP), Agriculture and Agri-Food (AAFC), University of Oxford, Universidade Federal de Viçosa = Federal University of Viçosa (UFV), and Universiteit Leiden