A Higher Level Classification of All Living Organisms Ruggiero, Michael A. ; Gordon, Dennis P. ; Orrell, Thomas M. ; Bailly, Nicolas ; Bourgoin, Thierry ; Brusca, Richard C. ; Cavalier-Smith, Thomas ; Guiry, Michael D. ; Kirk, Paul M. Abstract Publication: PLoS ONE Pub Date: April 2015 DOI: 10.1371/journal.pone.0119248 Bibcode: 2015PLoSO..1019248R